Thanks brother that was very helpful, I'm gonna change my main and pilot jet and thanks very much to you I guess I'll know how I would do it already. Thank you very much again and God bless your heart..
This is one of the best videos ive watched in a while. Very good instructions and easy to follow visually. I finally got my XR150L at the end of September, and this mod is definitely next on my list. Thank you!
Thank you MishMashMoto!! As a result of your great video I was inspired to test some different main jet sizes in my new 150L. I routinely ride low mountainous roads from sea level up to 2500’ 😅elevation. I rigorously tested 3 different size main jets; .105, .110, and .115. Note that my spark plug remained clean with all three of these sizes. In the end the .110 gave me the best and most linear power curve, acceleration and speed. The explanation of the results would take too long, but suffice it to say that in stock form, the .115 at higher RPM’s cannot draw enough O2 thru the small throat of the stock carburetor to generate an efficient burn. The reason the spark plug remains clean with the .115, is that, the engine does burn efficient enough thru the majority of the lower RPM ranges to clean up any temporary fouling.
Nice , vid im in tijuana and have a 22 will be doing this mod, its a pain for the coldstart after a few mon being off😅. I put a digital speedometer with gear change all for looks.
Nice video. Im at 900' and went with 110 and 38 pilot. The larger pilot allowed easier starts below 40f, but did not like to idle and smelled really rich. Went back to 35 pilot and kept the 110. I also ditched the white plastic funnel around the jet. It was just sitting in the bottom of the bowl when I pulled off the carb. If I gutted the air box and pulled the spark arrestor, it may have idled alright with the 38. But I'm not ready to do that yet.
Upgrade complete! Best 25 cent mod ever. Took about an hour but only because I drop stuff a lot due to a medical issue. Performance was noticeably better. Very similar to your experience. Elevation here is about 900 feet ASL. Sounds a little less ratilly (is that a word?). I hope it maintains 100+ mpg. Thanks M M M. What’s next? Flux capacitor?
Link is in the description for the jets, not really a change in top speed. Normal cruise was made easier/faster (about 4MPH at same throttle position). Hill climbing power went up.
Thanks for being so clear I'm using your videos as a guide on all the maintenance. Never done my own wrenching. Can't wait to hear more people trying the 110 and 115 to see which one works best. You make it look manageable. I watched a vidoe on carb tuning and they talked about adjusting the needle, is there a way to do that on the XR or a replacement that fits?
👍🏼 I plan to try the 110 myself tomorrow and see what I like better down near sea level. The needle is not adjustable on this bike but can be shimmed. I could also profile or “taper” the needle myself but that won’t help anyone duplicate my results. I have some shims leftover from tuning another bike a few months ago and may try a shim or two tomorrow and see what happens. Someone will make an aftermarket specifically tapered needle and/or add one to their “jet kit” at some point but for now we are just tuning as best we can with what we all have to work with. Honda/Keihin already did a great job with this carburetor from the factory. I would imagine the CRF150F parts may fit (maybe not 🤷🏼♂️). Keep sharing the knowledge everyone!
Here in Mexico they put the honda cargo 150 carb or the ft150 italika Chinese bikes sold here. I'm in Tijuana and have a 2022, I put a digital speedometer. And gear indicAtor 😅 first bike so I'm trying to not mess it up
Am very keen to hear about the 110 main. Going to try going 40 on the pilot in hopes of better cold idle. Yr videos are awesome. Couldn't do the work without them. Thank U
@@javiercoronel1169 What sending unit did you use for the gear indicator? I bought one off AliExpress that I haven't installed yet that fits WH125 WH175 CBR190 CB190R CBF190R CBF190 CBX190
You make it LQQK easy..... it's one thing being good @ mechanical things but the added expertise of the camera work is really much more than most folks know/understand. Then being good enough to work straight thru and/or the editing, you've got all of it pretty well figured out. That's like being good at 3 jobs in one sitting, KUDO's. About the bike...do you ride this or does another person ride her? I ask b/c of the suspension setup, if there is one on this bike? You're bigger than me & I wonder if this bike handles the weight well? There are some other Honda's that the front forks can be directly swapped out, if needed? I'm looking at a lot of bikes(dual sport) & just don't know what I want yet so I'm watching you. Been a delight, TY & peace
LOL, thanks for the props. The bikes suspension is actually pretty good up to the 311lb weight carrying limit. It's a good "local bike" IMO. Get a 300 if you plan to travel hiway much or do more serious off-road riding (and have the budget). These are great little machines though if it's what you want in a bike.
I meant those things, I note when I see what I call good work. Yeah, I'm looking at 3-4 bikes & this was a possible bike but in Texas you gotta use Interstate somewhat, I'm taking my time learning about everything in each bike I'll need & I liked your whole approach. Call it straight up how I see it.... ty MMM aka Triple M
@user-dv7hb2sc9m The 150 isn't Texan "speed approved." We try hard to stay off of anything that isn't posted at 55MPH or less. Depending on how you want to ride and your size, the KLX300 and CRF300 are both good bikes.
Thanks for the videos. I was curious about your thoughts regarding people removing the spark arrestor and not rejetting? Seems to be several people on either side claiming it will/won't change the mixture. Appreciate your thoughts!
Doing that will reduce exhaust back pressure and will change the mixture (and/or more accurately the air/fuel charge amount in the cylinder) to some degree. Should help upper RPM engine performance especially if properly tuned with more fuel. We just don’t prefer loud bikes so will leave ours intact.
@@MishMashMoto thanks for your insight. I ended up following your advice and swapping up to a #110 (higher elevation). I ride alot in the city so I think I'll take the arrestor off at some point just to make myself more audible to drivers. When I do I'll update on how it goes!
@@DustySteel No! We are at 0-1,000’ normally but this test was done at about 200’ elevation. I think at or above 5,000’ a 108 main jet would be the most you would want to run.
Hey, if I’m under 1,000ft (850) do you recommend stepping down in pilot jet? I have 115 main and 32 pilot currently in testing only because whenever I would rev match on downshifting it would cut off on me and I also found another issue with having a kinked vent hose. Every time I go to start the bike, it starts up right away, no choke needed. So far it’s great, very powerful too but I’m noticing a rich spark plug but looking forward to see how 115 35 will do for you and what you think about it 👍
So far I like it much better then stock. I have not had either one of our bikes cut off or any negative issues. I do think it is just a tiny tad rich from looking at the fuel line on the spark plug porcelain but I am OK with that. Maybe try a 110/35 combo. I think the 35 pilot is the way to go on this bike but more testing could change my mind.
What jetting did you end up with (Main and pilot)? Was that with airbox and exhaust baffle in stock configuration or modified ? Thanks for the videos,good info.
We left our bikes airbox and exhaust alone while we ran the stock carb. We used the 115 main jet and stock pilot from sea level to about 6,000'. One could also use 35/110 or 38/110 or 38/115 with carburetor idle mixture adjustments (you will need to remove the plug covering the adjustment screw and have a "single D" type adjustment tool for this).
Hey brother, right now I'm running a 110/38 configuration. I got my bike 6 days ago and I just ran the numbers on my MPG. I'm getting 89 MPG. What are your thoughts on the 115? How is your MPG? How is the Rotella T4 15W-40 running in the bike? I'm about to do my 600 mile service. I have the service manual downloaded. I'm down here in DFW, Texas. I'd love to hear any insight you have. Thank you for your time, -Eggs
Congratulations, You will drop to about 70mpg with the 115 but gain lots of engine cooling and some low & midrange performance. We have about 8,700 miles on ours with the Rotella 15W-40 T4 oil and no issues. Your bike is under warranty so oil choices should be considered. Personally, I think it’s great in the Texas heat but not for cold weather. Back your own judgement.
Dude on xr150lforum shows photos, and break down on his new 2024 XR150L, and there is a D style mixture adjusting screw under the welch plug on his. So, its interesting you say there isn't one. Wonder if they changed that between the 2024, and 2023 models. Would love to hear you thoughts? I can send you a link if you want.
Link is in the description if you want to order the whole set of jets I did. This was an improvement in torque and helped my normal cruise speed go up slightly. Top speed is about the same but the engine runs smoother and much cooler now. I would recommend this mod if your operating below 2,500’ elevation, a 110 main from 2,500’-5,000’, stock 105 above 5,000’. After more testing I will do a better review later.
@@SuperDerrickbell Yes, just find the jets you want that fit a PWK/OKO Keihin carburetor. Try this link. www.amazon.com/Pieces-Carburetor-Include-Pilot-Keihin/dp/B082F7Y6ZK?crid=FADOIS1I8RTM&keywords=20+pieces+carburetor+main+jet+kit&qid=1695386387&sprefix=20+piece+carb,aps,433&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1&linkCode=sl1&tag=mishmashmoto-20&linkId=42de20efbb8511aa0b89a577a96443f5&language=en_US&ref_=as_li_ss_tl
I have a question for you. If you were to remove the baffle in the muffler, without changing the jetting, would that enrich the fuel mix or make it more lean? Appreciate your comments on that. You seem to be very knowledgeable on the subject. Looking forward to your next video. Patrick
Normally giving an exhaust system “less restriction” (removing the baffle in this case) will allow more airflow through the exhaust and/or the engine combustion chamber and slightly lean the mixture to some degree. I have done testing with the baffle removed (basically it’s just louder).
Thanks so much for the reply. I value your opinion and was about to swap the stock jet for the 115 but thought I'd see what you had to say before doing that. Thanks so much! You taking the winter months off or just taking a break? Miss your content. God bless, Patrick@@MishMashMoto
@@pmmccrea You will like the jet swap IMO. We normally ride year round but we have been busy with some other important things. Should be able to get back at it soon though… We appreciate you for watching!
Finally changed out the 105 jet for a 115. Have yet to take it out on the road (I live on PA). You made it look so simple; easy for you, difficult for me. But I got it done and the bike seems to run just fine. You really need to stand on your head and have 3 hand to accomplish some of the steps, but it's done. Thanks once again for the excellent instruction. Looking forward to your next adventure. Patrick
@@pmmccrea Keep us posted on how it works out for you. We have been busy with some other things but we will post again when we can find the time to get out and ride em again.
So im brand new to small motors and carbs. Ive worked on fuel injected stuff my whole life. Out of that jet kit you have in the description which one do i use? Is it labelled 115?
It gives better low and midrange power than the 110 does. It also runs much cooler with the 115 (nice in the summer heat). The Downside is MPG drops to about 65-70MPG. We both have been running a PZ30 carburetor for several months now and REALLY like it. I'm still working on those videos.
If you're in a lower elevation area, I would suggest the 115 for best starting and low/midrange power. Go with a 105-110 main if you're going to ride over 3,000 feet most of the time. We have road tested it from sea level to around 5,800' on the 115 jet. The idle fuel mixture is also adjustable. You will need to pull the weltch plug and have a "single D" type adjustment tool to adjust it, though.
Well great job explaining the process , but man you left us hanging , did the richer jet give you a highter top end , and most importantly at what elevation are you tuning for . I think a rev delete kit and coil like the one for the Navi . And a sprocket change . Could be driven on a Hwy for short trips . 70-75 mph . Looking for a clear windshield help.
Sorry about that, still testing this setup out. It was more of a how to for anyone not familiar with carbs. I may do a video one day on how to properly do spark plug chops and proper spark plug reading for fuel and ignition timing.
The rev delete kit allows you to set the rev limiter so bumping the revs up 500 or even 1000 on such a well balanced motor will not shake it apart at 1000 rpm more may need stronger valve springs . Remember this engines have been abused by 10,000 of thousands in Asians, Philippines and now North America. This bike will still be running and I will have long past from this earth . I would love 10 mph out of this fantastic machine.
Im in sd cali and did the 115 and it made the problem worse. Im at 690 elevation. It made the bike bog at low speeds lol. Before i was bogging at higher rpms do i need to go down from the 105 or would a 108 be a better option ? Man this 150 carrys my fat 190 lbs like 45mph lol its a good thing its my first bike and only 3000 bucks... 😅
@@MishMashMotoit def has more pep ! Haha yes much better ride haha it's a great starter bike for me and I feel like for 3000 bucks it's a deal and will hold value. I would like to get a drz 400 when I feel like I'm ready but for now the bike is great it starts every time and is a fun ride when the choke is off 😅
We put about 50 miles on each bike today. It works pretty good and better then stock. The spark plug looks about right also. A 110 may also be a good choice for higher elevation users. Our only testing was done around 200’ elevation today. We are happy with it at this altitude.
@@MishMashMoto I put the 38 pilot jet in and I did the 110 main and I go up and I run a canyon aka Ortega highway all the time and the bike runs a lot better now I use this bike more for running the canyons and mountains then I do riding in the dirt I had two XR650s and two XR400s but this bike is so light and nimble it's actually a joy to ride up as a road bike and it handles that well to very surprising and the neat thing is I can go off road anytime I want That's what makes this bike so fun thanks for your response on the jetting you've done.
@@user-rc2sc5hf9v I almost tried that combo today. I think it or the 35/115 will be best. I just need more time to try a few different configurations (got a busy 5 days coming so may not be able to do any jet testing for bit).
@@MishMashMoto I'm going to try the 35115 myself today because it's still a little rich and I was going to run it and then just shut it off pull over and get a true read on it because that's the way that I was taught to take a spark plug read is that you run it shut it off pull over pull the plug but I believe that the pilot jet the idle jet still too big so I'm going to try the combination that you're working and see if that makes a difference and I really appreciate the response and you just sharing this I'm a long time motorcycle rider My dad accustomed bike builder for years he just passed away in June at 89 and I'm a welder a fabricator I've had so many bikes I can't even count them and worked really hard to have it all this bike I got for fun it's not about how fast it goes or any of that of what I used to always be concerned about the bike is really fun and I just want to get it to not be lean and try and get a little more out of it just for the highway issue cuz I have highways out here that I have to ride on and traffic's terrible because everybody likes to push one another and if I didn't have to worry about traffic speed I wouldn't change anything on the bike but I think that this is a good move so I'm going to try the 35 pilot and then the 115 on the main and thank you again for that I really hope that you have a blessed day and enjoy your weekend.
Order the jets with the link in the description, top end is about the same as stock (engine runs cooler and smoother with more torque in 5th for hills. So far I have tested it at around a 200’ elevation.
Depends on your dealership (most don’t care as rejetting is a common thing to do). I think it’s worth it mainly to keep the engine temps down at higher speeds. If your just using yours as a low speed local trail bike then just leave it stock as the power gain is like 5-10%. We did it mainly for engine longevity (won’t burn up the exhaust valve). If your under 3,000’ elevation and run it at 50MPH or more I would say do it.
Pros: It has more torque, especially when accelerating hard or going up hills. Engine runs much cooler going down the road at speed. Should help engine longevity also. Cons: You will burn more fuel (we dropped about 10-15 miles per gallon). It did not increase the bikes top speed.
@@pmmccrea on longer trips my legs went from getting very hot through my pants and my riding overpants to being able ride it in shorts. There is a ton of heat reduction and also through the exhaust system you can tell there is less heat. The spark plug also has some color to it (was just bright white which is lean).
Thanks so much, I just wondered how you arrived at that conclusion. Your channel is very informative and you have a lot of great tips. Do you have a shop manual or something as the basis your great knowledge? Thanks for responding.👍@@MishMashMoto
@@pmmccrea We have not obtained a good shop manual as of yet. Great River Honda and a few “in the know” subscribers gave us all the correct clearances and other specifications. I have rebuilt and tuned motorcycle and aircraft engines for most of my career and that helps me share some little tips about these bikes also. I normally prefer to do things in a more analytical method with AFR, EGT, and CHT probes but on these simple carbureted single cylinder engines the spark plug really tells you everything you need to know.
From memory: straight slot, Phillips, needle nose pliers, 10mm open end wrench, 10mm socket & ratchet, and maybe a 7mm deep socket (or use pliers like I did). The new fuel jet of course.
Two reasons. First off, I absolutely love Yoshimura products! ❤️ 1. We wanted to do as much testing as possible (in basically stock form) on these bikes to determine reliability (they pass with an A+). 2. We had a use for these bikes over the past year where the extra noise wasn't desirable to us. That's become less of a factor for us today, so we may decide to do that at some point.
I drive my bike to work and sometimes have to leave it outside in the rain as well as drive home in the rain sometimes because i don’t have a car. Will the main jet upgrade to a 110 or 115 still be worth it to do if I don’t take out the snorkel thing on the air intake? Or do I need the extra airflow in order to justify a larger jet? I am roughly 900ft of elevation if that makes any difference
@@Crash-mi8os We ran ours with the snorkel in for about 5,000 miles. It would run slightly better with it removed and the exhaust opened up some but neither is mandatory. It really needs all the extra airflow you can give it though. We switched to a PZ30 carb with good results. It’s roughly a 25/26mm carb. Even though it says 30mm.
@@MishMashMoto thank you, so regardless of what I do with the snorkel, you would recommend upgrading the jet as well as the carb is what I’m understanding?
@Crash-mi8os The 115 adds midrange power but hurts MPG and top speed slightly. The PZ30 allows more airflow to better match the 115 jetting. I have completed a video on the PZ30 but am having a hard time getting it transferred. In short, I do recommend a slightly larger carburetor for best midrange and higher RPM performance (doing this will hurt your very low RPM performance some).
That's about the best, no bullshit mod that I've seen by anybody ,ever !! Way to go.
Good job.
Without your excellent video I could have not done the carb upgrade. Thank you, I owe you a beer.
Your very welcome and glad we could help.
Thanks brother that was very helpful, I'm gonna change my main and pilot jet and thanks very much to you I guess I'll know how I would do it already. Thank you very much again and God bless your heart..
Thank you. This is an excellent "how to" video. Well organized, and video and audio is clear and easy to follow. Bravo!
Thank you, we are trying…
Another great video. Thank You 👍
This is one of the best videos ive watched in a while. Very good instructions and easy to follow visually. I finally got my XR150L at the end of September, and this mod is definitely next on my list. Thank you!
Glad you liked it. 👍🏼
Thank you MishMashMoto!! As a result of your great video I was inspired to test some different main jet sizes in my new 150L.
I routinely ride low mountainous roads from sea level up to 2500’ 😅elevation.
I rigorously tested 3 different size main jets; .105, .110, and .115. Note that my spark plug remained clean with all three of these sizes. In the end the .110 gave me the best and most linear power curve, acceleration and speed. The explanation of the results would take too long, but suffice it to say that in stock form, the .115 at higher RPM’s cannot draw enough O2 thru the small throat of the stock carburetor to generate an efficient burn. The reason the spark plug remains clean with the .115, is that, the engine does burn efficient enough thru the majority of the lower RPM ranges to clean up any temporary fouling.
I totally agree and found the same with my testing also. We ride between 200 & 600’ most of the time and the 115 keeps the engine temps down.
I did it and it makes a huge difference. I'm near sea level and it works perfectly. Great video
Good to hear. 👍🏼👍🏼
Awesome video!
Thank you!
Nice , vid im in tijuana and have a 22 will be doing this mod, its a pain for the coldstart after a few mon being off😅. I put a digital speedometer with gear change all for looks.
Great video!
Thank you!
I bought mine today in chattanooga and broke it in by going down 55/65 mph hwys for fourty miles. It was 32 f and lean on top for sure
The 115 main is perfect IMO
110 if going over about 3,000’ on a regular basis.
Nice video. Im at 900' and went with 110 and 38 pilot. The larger pilot allowed easier starts below 40f, but did not like to idle and smelled really rich. Went back to 35 pilot and kept the 110. I also ditched the white plastic funnel around the jet. It was just sitting in the bottom of the bowl when I pulled off the carb. If I gutted the air box and pulled the spark arrestor, it may have idled alright with the 38. But I'm not ready to do that yet.
Thanks for the feedback. 👍🏼
Upgrade complete! Best 25 cent mod ever. Took about an hour but only because I drop stuff a lot due to a medical issue. Performance was noticeably better. Very similar to your experience. Elevation here is about 900 feet ASL. Sounds a little less ratilly (is that a word?). I hope it maintains 100+ mpg. Thanks M M M. What’s next? Flux capacitor?
I'm at 690 and the 115 jet made the problem worse
@@DankTank374Check your float level.
Link is in the description for the jets, not really a change in top speed. Normal cruise was made easier/faster (about 4MPH at same throttle position). Hill climbing power went up.
Exactly what I experienced too, all good! Little peppier!
I did same on mine xr150 ! Waiting for aftermarket pipe should arrive tomorrow! See what happened after installation
Thanks for being so clear I'm using your videos as a guide on all the maintenance. Never done my own wrenching. Can't wait to hear more people trying the 110 and 115 to see which one works best. You make it look manageable. I watched a vidoe on carb tuning and they talked about adjusting the needle, is there a way to do that on the XR or a replacement that fits?
👍🏼 I plan to try the 110 myself tomorrow and see what I like better down near sea level. The needle is not adjustable on this bike but can be shimmed. I could also profile or “taper” the needle myself but that won’t help anyone duplicate my results. I have some shims leftover from tuning another bike a few months ago and may try a shim or two tomorrow and see what happens. Someone will make an aftermarket specifically tapered needle and/or add one to their “jet kit” at some point but for now we are just tuning as best we can with what we all have to work with. Honda/Keihin already did a great job with this carburetor from the factory. I would imagine the CRF150F parts may fit (maybe not 🤷🏼♂️). Keep sharing the knowledge everyone!
Here in Mexico they put the honda cargo 150 carb or the ft150 italika Chinese bikes sold here. I'm in Tijuana and have a 2022, I put a digital speedometer. And gear indicAtor 😅 first bike so I'm trying to not mess it up
Am very keen to hear about the 110 main.
Going to try going 40 on the pilot in hopes of better cold idle.
Yr videos are awesome. Couldn't do the work without them.
Thank U
@@javiercoronel1169 What sending unit did you use for the gear indicator? I bought one off AliExpress that I haven't installed yet that fits WH125 WH175 CBR190 CB190R CBF190R CBF190 CBX190
You make it LQQK easy..... it's one thing being good @ mechanical things but the added expertise of the camera work is really
much more than most folks know/understand. Then being good enough to work straight thru and/or the editing, you've got
all of it pretty well figured out. That's like being good at 3 jobs in one sitting, KUDO's. About the bike...do you ride this or does
another person ride her? I ask b/c of the suspension setup, if there is one on this bike? You're bigger than me & I wonder if
this bike handles the weight well? There are some other Honda's that the front forks can be directly swapped out, if needed?
I'm looking at a lot of bikes(dual sport) & just don't know what I want yet so I'm watching you. Been a delight, TY & peace
LOL, thanks for the props. The bikes suspension is actually pretty good up to the 311lb weight carrying limit. It's a good "local bike" IMO. Get a 300 if you plan to travel hiway much or do more serious off-road riding (and have the budget). These are great little machines though if it's what you want in a bike.
I meant those things, I note when I see what I call good work. Yeah, I'm looking at 3-4 bikes & this was a possible bike
but in Texas you gotta use Interstate somewhat, I'm taking my time learning about everything in each bike I'll need &
I liked your whole approach. Call it straight up how I see it.... ty MMM aka Triple M
@user-dv7hb2sc9m The 150 isn't Texan "speed approved." We try hard to stay off of anything that isn't posted at 55MPH or less. Depending on how you want to ride and your size, the KLX300 and CRF300 are both good bikes.
Thanks for the videos. I was curious about your thoughts regarding people removing the spark arrestor and not rejetting? Seems to be several people on either side claiming it will/won't change the mixture. Appreciate your thoughts!
Doing that will reduce exhaust back pressure and will change the mixture (and/or more accurately the air/fuel charge amount in the cylinder) to some degree. Should help upper RPM engine performance especially if properly tuned with more fuel. We just don’t prefer loud bikes so will leave ours intact.
@@MishMashMoto thanks for your insight. I ended up following your advice and swapping up to a #110 (higher elevation). I ride alot in the city so I think I'll take the arrestor off at some point just to make myself more audible to drivers. When I do I'll update on how it goes!
definitely stay with 35 pilot, I tried 38 and didn't like it. running 108 main now and definitely better than stock, dying to see how the 115 performs
Good info, let me know what you think if you try the 35/115 combo.
@timetoadventure7 are you at or above 5000’?
@@DustySteel No!
We are at 0-1,000’ normally but this test was done at about 200’ elevation. I think at or above 5,000’ a 108 main jet would be the most you would want to run.
Hey, if I’m under 1,000ft (850) do you recommend stepping down in pilot jet? I have 115 main and 32 pilot currently in testing only because whenever I would rev match on downshifting it would cut off on me and I also found another issue with having a kinked vent hose. Every time I go to start the bike, it starts up right away, no choke needed. So far it’s great, very powerful too but I’m noticing a rich spark plug but looking forward to see how 115 35 will do for you and what you think about it 👍
So far I like it much better then stock. I have not had either one of our bikes cut off or any negative issues. I do think it is just a tiny tad rich from looking at the fuel line on the spark plug porcelain but I am OK with that. Maybe try a 110/35 combo. I think the 35 pilot is the way to go on this bike but more testing could change my mind.
im in iowa ! i would like to put new jets main and pilot one size bigger for better start in colder weather ! would you recommend ? thanks
At your altitude you should put a 115 main jet in it but leave the stock pilot jet and everything else alone.
What jetting did you end up with (Main and pilot)? Was that with airbox and exhaust baffle in stock configuration or modified ? Thanks for the videos,good info.
We left our bikes airbox and exhaust alone while we ran the stock carb. We used the 115 main jet and stock pilot from sea level to about 6,000'. One could also use 35/110 or 38/110 or 38/115 with carburetor idle mixture adjustments (you will need to remove the plug covering the adjustment screw and have a "single D" type adjustment tool for this).
Where did u buy the jet kit?Honda or aftermarket ? I didn’t see where u got them. Thanku for the great video.
Amazon
I'm considering a xr150L I live in Ontario Canada could you tell me where you purchased your charberator heater and how is yours doing do I need it ?
The heater is standard equipment. Our bikes have always started very well!!!
Hey brother, right now I'm running a 110/38 configuration. I got my bike 6 days ago and I just ran the numbers on my MPG. I'm getting 89 MPG. What are your thoughts on the 115? How is your MPG? How is the Rotella T4 15W-40 running in the bike? I'm about to do my 600 mile service. I have the service manual downloaded. I'm down here in DFW, Texas. I'd love to hear any insight you have.
Thank you for your time,
-Eggs
Congratulations, You will drop to about 70mpg with the 115 but gain lots of engine cooling and some low & midrange performance. We have about 8,700 miles on ours with the Rotella 15W-40 T4 oil and no issues. Your bike is under warranty so oil choices should be considered. Personally, I think it’s great in the Texas heat but not for cold weather. Back your own judgement.
Thanks..can u wear a mic..please..n better lighting.otherwise great help
Lol
Dude on xr150lforum shows photos, and break down on his new 2024 XR150L, and there is a D style mixture adjusting screw under the welch plug on his. So, its interesting you say there isn't one. Wonder if they changed that between the 2024, and 2023 models. Would love to hear you thoughts? I can send you a link if you want.
It has one in there. You will need a "single D" type adjustment tool. I had a video on how to access it, but I deleted it.
I’m in Florida any reason for me to change out the stock jet ? Picking my xr up this weekend.
It should run fine stock but the engine will run cooler and have a little more power if you do the swap.
Link is in the description if you want to order the whole set of jets I did. This was an improvement in torque and helped my normal cruise speed go up slightly. Top speed is about the same but the engine runs smoother and much cooler now. I would recommend this mod if your operating below 2,500’ elevation, a 110 main from 2,500’-5,000’, stock 105 above 5,000’. After more testing I will do a better review later.
Much appreciation, I love how comfortable and easy to ride this bike is .
Well done! You made it look easy.
@@steventyree3851 Once you have done it a time or two and aren’t trying to video, it only takes about 15 minutes to swap jets.
On Amazon it shows that they are out of stock. It does show other choices, is there a similar product?
@@SuperDerrickbell Yes, just find the jets you want that fit a PWK/OKO Keihin carburetor. Try this link.
www.amazon.com/Pieces-Carburetor-Include-Pilot-Keihin/dp/B082F7Y6ZK?crid=FADOIS1I8RTM&keywords=20+pieces+carburetor+main+jet+kit&qid=1695386387&sprefix=20+piece+carb,aps,433&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1&linkCode=sl1&tag=mishmashmoto-20&linkId=42de20efbb8511aa0b89a577a96443f5&language=en_US&ref_=as_li_ss_tl
I have a question for you. If you were to remove the baffle in the muffler, without changing the jetting, would that enrich the fuel mix or make it more lean? Appreciate your comments on that. You seem to be very knowledgeable on the subject. Looking forward to your next video. Patrick
Normally giving an exhaust system “less restriction” (removing the baffle in this case) will allow more airflow through the exhaust and/or the engine combustion chamber and slightly lean the mixture to some degree. I have done testing with the baffle removed (basically it’s just louder).
Thanks so much for the reply. I value your opinion and was about to swap the stock jet for the 115 but thought I'd see what you had to say before doing that. Thanks so much! You taking the winter months off or just taking a break? Miss your content. God bless, Patrick@@MishMashMoto
@@pmmccrea You will like the jet swap IMO. We normally ride year round but we have been busy with some other important things. Should be able to get back at it soon though… We appreciate you for watching!
Finally changed out the 105 jet for a 115. Have yet to take it out on the road (I live on PA). You made it look so simple; easy for you, difficult for me. But I got it done and the bike seems to run just fine. You really need to stand on your head and have 3 hand to accomplish some of the steps, but it's done. Thanks once again for the excellent instruction. Looking forward to your next adventure. Patrick
@@pmmccrea Keep us posted on how it works out for you. We have been busy with some other things but we will post again when we can find the time to get out and ride em again.
So im brand new to small motors and carbs. Ive worked on fuel injected stuff my whole life. Out of that jet kit you have in the description which one do i use? Is it labelled 115?
It is one of the short and fat main jets. It will be labeled 115 on the side just above the threads (I use a magnifying glass to read them).
@@MishMashMotosweet thanks!
I've watched another two guys change theirs, and they went 108/110 respectively. Any particular reason to go to 115? Altitude?
It gives better low and midrange power than the 110 does. It also runs much cooler with the 115 (nice in the summer heat). The Downside is MPG drops to about 65-70MPG. We both have been running a PZ30 carburetor for several months now and REALLY like it. I'm still working on those videos.
If you're in a lower elevation area, I would suggest the 115 for best starting and low/midrange power. Go with a 105-110 main if you're going to ride over 3,000 feet most of the time. We have road tested it from sea level to around 5,800' on the 115 jet. The idle fuel mixture is also adjustable. You will need to pull the weltch plug and have a "single D" type adjustment tool to adjust it, though.
Will report after more testing, read my comment above for a few more details.
Well great job explaining the process , but man you left us hanging , did the richer jet give you a highter top end , and most importantly at what elevation are you tuning for . I think a rev delete kit and coil like the one for the Navi . And a sprocket change . Could be driven on a Hwy for short trips . 70-75 mph . Looking for a clear windshield help.
Sorry about that, still testing this setup out. It was more of a how to for anyone not familiar with carbs. I may do a video one day on how to properly do spark plug chops and proper spark plug reading for fuel and ignition timing.
Why a rev delete kit? Isn’t revving the engine to high bad for it? That’s why it’s there no?
The rev delete kit allows you to set the rev limiter so bumping the revs up 500 or even 1000 on such a well balanced motor will not shake it apart at 1000 rpm more may need stronger valve springs . Remember this engines have been abused by 10,000 of thousands in Asians, Philippines and now North America. This bike will still be running and I will have long past from this earth . I would love 10 mph out of this fantastic machine.
@@philipcloutier2553 I agree. I can understand that.
@@philipcloutier2553 what are your thoughts on a big bore kit? They have ones from the Philippines, a 233cc big bore kit.
Im in sd cali and did the 115 and it made the problem worse. Im at 690 elevation. It made the bike bog at low speeds lol. Before i was bogging at higher rpms do i need to go down from the 105 or would a 108 be a better option ? Man this 150 carrys my fat 190 lbs like 45mph lol its a good thing its my first bike and only 3000 bucks... 😅
Sounds like something else is wrong with your bike. Take it back for some warranty work.
Hey man it just dawned on me I was running the bike with the choke on the whole fkn time lol I feel soooo stupid !
@@DankTank374 All the way down is choke off. It happens. Bet you love the bike now!
@@MishMashMotoit def has more pep ! Haha yes much better ride haha it's a great starter bike for me and I feel like for 3000 bucks it's a deal and will hold value. I would like to get a drz 400 when I feel like I'm ready but for now the bike is great it starts every time and is a fun ride when the choke is off 😅
@@DankTank374 I might be looking to get an XR 150 L later this year. If you decide to get a drz 400 and want to sell the XR, let me know.
Im at 6100 feet .stock carb jetting too rich..switched out main jet from 105 to a 102..n its ok..55 mph..
I was at 5,400’ today with the 115 main. It worked fine but it’s rich at that altitude.
Will the bike run if you get the plastic piece off center? thanks
Probably so, as long as it isn't binding up the float or covering a fuel jet. If it's not correct, you should really fix it.
@@MishMashMoto Thanks
Have you run the bike enough to see if leaving in the stock idle jet and going the 1:15 is that working out and is it still too rich or to lean.
We put about 50 miles on each bike today. It works pretty good and better then stock. The spark plug looks about right also. A 110 may also be a good choice for higher elevation users. Our only testing was done around 200’ elevation today. We are happy with it at this altitude.
@@MishMashMoto I put the 38 pilot jet in and I did the 110 main and I go up and I run a canyon aka Ortega highway all the time and the bike runs a lot better now I use this bike more for running the canyons and mountains then I do riding in the dirt I had two XR650s and two XR400s but this bike is so light and nimble it's actually a joy to ride up as a road bike and it handles that well to very surprising and the neat thing is I can go off road anytime I want That's what makes this bike so fun thanks for your response on the jetting you've done.
@@user-rc2sc5hf9v I almost tried that combo today. I think it or the 35/115 will be best. I just need more time to try a few different configurations (got a busy 5 days coming so may not be able to do any jet testing for bit).
@@MishMashMoto I'm going to try the 35115 myself today because it's still a little rich and I was going to run it and then just shut it off pull over and get a true read on it because that's the way that I was taught to take a spark plug read is that you run it shut it off pull over pull the plug but I believe that the pilot jet the idle jet still too big so I'm going to try the combination that you're working and see if that makes a difference and I really appreciate the response and you just sharing this I'm a long time motorcycle rider My dad accustomed bike builder for years he just passed away in June at 89 and I'm a welder a fabricator I've had so many bikes I can't even count them and worked really hard to have it all this bike I got for fun it's not about how fast it goes or any of that of what I used to always be concerned about the bike is really fun and I just want to get it to not be lean and try and get a little more out of it just for the highway issue cuz I have highways out here that I have to ride on and traffic's terrible because everybody likes to push one another and if I didn't have to worry about traffic speed I wouldn't change anything on the bike but I think that this is a good move so I'm going to try the 35 pilot and then the 115 on the main and thank you again for that I really hope that you have a blessed day and enjoy your weekend.
Forgive my miss wording I was speaking into my phone I can't rely on that so thanks again you have a blessed day.
What elevation are you at I am at 100 + feet above sea level . Thanks
200-600 On average, read my comments above for a few more details.
Testing was done at 200-250’ elevation.
Am a little slow here.
Where best place to order/buy 115 jet?
Thnx
There is a link in the description of this video.
Honda dealer
Just ordered mine. Only 18 kits left they say so jump on it. Not sure what I’m going to do with the remains 39 pieces....
At least it was cheap, put em in your tool box, maybe you will need one for something else one day.
Change in top end? And were did you find the new jet?
Order the jets with the link in the description, top end is about the same as stock (engine runs cooler and smoother with more torque in 5th for hills. So far I have tested it at around a 200’ elevation.
@@MishMashMoto Thanks. I should have checked there. I think I will give it a try.
@@paulthompson1216 Good luck! If your under 2,500’ elevation I would say the 115 main and a stock pilot will work well for you.
Have you modified the exhaust in any way?
No, completely stock exhaust. We like quiet bikes.
Man. I agree leave the exhaust alone !
Will this remove my warranty?
And is it worth it ?
Depends on your dealership (most don’t care as rejetting is a common thing to do). I think it’s worth it mainly to keep the engine temps down at higher speeds. If your just using yours as a low speed local trail bike then just leave it stock as the power gain is like 5-10%. We did it mainly for engine longevity (won’t burn up the exhaust valve). If your under 3,000’ elevation and run it at 50MPH or more I would say do it.
What improvements in performants can I see in this modification?
Pros: It has more torque, especially when accelerating hard or going up hills. Engine runs much cooler going down the road at speed. Should help engine longevity also.
Cons: You will burn more fuel (we dropped about 10-15 miles per gallon). It did not increase the bikes top speed.
How do you know that the engine runs cooler? Thanks again. Merry Christmas!@@MishMashMoto
@@pmmccrea on longer trips my legs went from getting very hot through my pants and my riding overpants to being able ride it in shorts. There is a ton of heat reduction and also through the exhaust system you can tell there is less heat. The spark plug also has some color to it (was just bright white which is lean).
Thanks so much, I just wondered how you arrived at that conclusion. Your channel is very informative and you have a lot of great tips. Do you have a shop manual or something as the basis your great knowledge? Thanks for responding.👍@@MishMashMoto
@@pmmccrea We have not obtained a good shop manual as of yet. Great River Honda and a few “in the know” subscribers gave us all the correct clearances and other specifications. I have rebuilt and tuned motorcycle and aircraft engines for most of my career and that helps me share some little tips about these bikes also. I normally prefer to do things in a more analytical method with AFR, EGT, and CHT probes but on these simple carbureted single cylinder engines the spark plug really tells you everything you need to know.
Anyone with a tool list for this work please?
From memory: straight slot, Phillips, needle nose pliers, 10mm open end wrench, 10mm socket & ratchet, and maybe a 7mm deep socket (or use pliers like I did). The new fuel jet of course.
I had a question for you to ask why you don't run the yoshimura on your bike.
Two reasons. First off, I absolutely love Yoshimura products! ❤️
1. We wanted to do as much testing as possible (in basically stock form) on these bikes to determine reliability (they pass with an A+).
2. We had a use for these bikes over the past year where the extra noise wasn't desirable to us. That's become less of a factor for us today, so we may decide to do that at some point.
I drive my bike to work and sometimes have to leave it outside in the rain as well as drive home in the rain sometimes because i don’t have a car.
Will the main jet upgrade to a 110 or 115 still be worth it to do if I don’t take out the snorkel thing on the air intake? Or do I need the extra airflow in order to justify a larger jet?
I am roughly 900ft of elevation if that makes any difference
@@Crash-mi8os We ran ours with the snorkel in for about 5,000 miles. It would run slightly better with it removed and the exhaust opened up some but neither is mandatory. It really needs all the extra airflow you can give it though. We switched to a PZ30 carb with good results. It’s roughly a 25/26mm carb. Even though it says 30mm.
@@MishMashMoto thank you, so regardless of what I do with the snorkel, you would recommend upgrading the jet as well as the carb is what I’m understanding?
@Crash-mi8os The 115 adds midrange power but hurts MPG and top speed slightly. The PZ30 allows more airflow to better match the 115 jetting. I have completed a video on the PZ30 but am having a hard time getting it transferred. In short, I do recommend a slightly larger carburetor for best midrange and higher RPM performance (doing this will hurt your very low RPM performance some).