The Harley Power Secret That Can Be Money Well Spent or Saved
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- čas přidán 21. 04. 2022
- The Harley power secret isn't something hidden and rarely thought about, is a larger throttle body and intake manifold the key? We are always looking for a quick easy power upgrade but we don't want to throw good money away on parts we don't need. More air means more power but the truth is the engine can only pump so much air as it is limited by its cylinder bore size. Depending on which engine you have a new air intake can be very beneficial, especially on a Milwaukee 8. But not every Harley needs a larger throttle body, stock displacement Twin Cams and really anything under 120 cubic inches isn't going to net much gain for the money spent. The Harley power secret over 120 cubic inches may be the throttle body but no matter what it always comes back to the cam.
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Would you invest in a larger throttle body and air intake manifold or just have your stock parts ported?
Probably HPI for me. Horsepower incorporated have this down to perfection.
💪🇦🇺💪 THANKYOU ❣️
Stock CI I would just port the stock.. good port match
No I want toque. Higher velocity is my aim
FixxerGooo When is HD coming out with a Stage V 150 CI kit?
Your a true gear head, just logic and knowledge, no bs just straight facts.
Thank you, I really appreciate that!
It sure is nice having somebody tell you something they know about and not trying to sugar coat it or anything it's just beautiful thank you.
Thank you! I appreciate that, I try to keep it straight forward and honest around here. Sometimes we have a sponsored video but if it sucks I will say it lol, probably why we don't have many sponsored videos lol.
Back in 1974, I bought a used 72 Sporty, ironhead of course...I tried a few 'trick' intake/carb deals...not much to talk about, I went to a good shop that did only motors for Harleys...guy said, the best money you spend will be a cam/s...I did it myself in an hour in my apartment parking area. Good improvement, no grinding/porting the cast iron intake, or splitting the cases...,
But later, I wanted some more power, so I got a 4-1/2 stroker kit from S&S...now I had a 74 inch Sporty, pretty much happy with that, only real issue was short piston life, but I could still change out the cyls/pistons in my parking area, a couple hours...what I eventually did was buy a spare set of cylinders and pistons...honed, ring gap set...easy install. I found the James gaskets to be very good, they are also the only brand that fits my 46 Knuckle very well...Bike ran best with the old stock Bendix carb too...
I lived in southern California near the coast, so the cool weather was nice, no real overheating...except slogging along on the L.A. freeway 'parking lot'...
My Friday is not complete without a solid dose of Gixxerfoo!!! Great video. Thanks for sharing. 👍
Thank you for allowing me to make your Friday complete!
LOL this video is comical, try beating a Gixxer over 160 MPH, if the Harley can even hit 130 and hold it there for a 100 miles
A cam and a good dyno tuner is a good return for your investment. Why pay hard earned cash with very little gains. Great video!
Thanks 👍 The camshaft dictates just about everything with the engine but it's nothing without good tuning.
While i don’t disagree with anyone adding a cam or cams (twin cams) i did just AC, 55mm SE manifold, and sawicki exhaust. 117 cu softail, 111hp, 121 torque. PV tune. Stock Cam.
I changed out my twin cam 103 and it just became a Pandora's box.. when you start to upgrade one thing you find a weak point of another thing... then you change that to find another thing... it's been a learning experience..😂
Lol it never stops when you get started!
Bigger valves, cam, exhaust and a good tune! Aftermarket of course!
Couldn't agree more!
Love all your videos! I always learn a lot
Awesome! Thank you!
Great review! Love the wealth of info you share!!
Thanks for watching! I really appreciate your support!
Hey there, I’m kinda new to your channel but I really appreciate the content. I’m a bit of an information junkie and the research you put in really pays off. I was wondering what your background was. Forgive me if it’s in your bio, but you really sound like a technician with decades of experience.
Welcome to the channel! I have pretty much spent my whole life in motorcycles, grew up in a dealer, raced bikes, worked at independent shops and spent a lot of time looking over the shoulders of the grumpy old mechanics. Pretty much done all my own work for years and leaned on my resources when I got stuck or knew I was getting in deep.
I agree with you so much! We’ve talked about it before, I put the Wood W6 in my 96 softail. It gave me 25 hp extra, I don’t know how many foot pounds of torque it did but there is a huge difference in its performance, the sound, etc. and I couldn’t be more tickled!
That's awesome! Those Wood cams really wake those bikes up quite a bit! It's well worth the time and effort to get one put in!
Excellent description, great advice, appreciate you👊🏻
Just found this you tube channel. You have a lot of great videos that explain things in an easy to understand fashion. Thanks!
Hello Gixxer. My 2010 Road Glide already had the Screaming Eagle intake tuned to Vance & Hines Pro pipe. Finally getting cams done at local custom shop, Acme Motorcycle. Went with the S & S gear drive cam and new oil pump. Bike has 54 K and the old parts were definitely showing signs of wear. Thanks for the great video as always!
That's awesome to hear, it will be like a whole new bike when you get that back!
Best site of really good explanation about increased power and decreased MYTHOS. tumb up from Germany !!
This was a timely article for me, thank you.
That's awesome, I hope it was helpful!
Its all about the limiting factor. Amazing job breaking it down.
That's correct, your motor is only going to perform as well as what holds it back not what all you have done to it.
Although I don't own an M8 or have F.I., I still enjoyed the video and the plethora of information that you have given us... keep up the great work Gixxer!!!👍
I was going to say the same.
Much appreciated! Carbureted bikes are a whole new venture, same rules still apply when you get up there in the power where you need a bigger bore carb to just flow more air.
Thanks again for a wealth of excellent information on performance upgrade strategies👍
Thank you for supporting the channel, it's much appreciated!
A cam(s) is the best bang for the buck in terms of horsepower and torque gain for the money. I also wouldn't spend the money on aftermarket heads, but rather find someone who knows what they are doing, port and polish the factory cylinder heads. I have found with carbs, throttle bodies make sure they are matched with the engine size right. Some guys will put too big a carb on a smaller motor, and while they may gain some top end hp they lose too much on the lower end if they go to big.
Thanks! Another great video. My comment is I ride trips and that kind of HP is great around town. On the road I think I don’t need that much. I’m thinking reliability and gas mileage. But for sure that would be seat of the pants fun.
Big motors are a lot of fun around town, you don't necessarily need it non the highway but it's nice to have when rolling on for a pass.
By the way, my Sporster is growing on me everyday and the more I hear about other bikes the more I like my 2007 1200 Sportster custom. Potato, potato, potato,..,. Probably the best motorcycle ever.
I am a Sportster guy, I like the big twins but just something about a Sportster to me. They sound a lot meaner too!
Awesome video this is what I like. More m8 content thanks I did a s&s 55 mm Intake on me 2020 114 stage 2 my opinion on it not much gain but the bike runs much smother. I already port and polish the s&s intake. Definitely worth the 200 in my opinion I think I got mine on parts geek for 170
It's a great upgrade on the M8, you eliminate the chances of melting or warping the stock unit creating intake leaks. The cast aluminum pieces flow air a lot better than the composite pieces for sure, they do makes some decent gains on the big end.
You are the BEST brother!!! . Your advice has NEVER did me wrong!!!! Thank you!!! Thank you !!
I appreciate that, thank you. I am just happy to be of service and able to help!
Good video! I bought the S&S intake manifold for my 114 hp kit.
That S&S manifold makes a difference in more way than one, it's worth it to get rid of that plastic intake and pick up a little power!
When Harley makes a rediculously inferior part like a plastic intake I'm most definitely not replacing it with a Harley part. They should've built it right the first time. I'll buy S&S.
Yeah I'd go with the S&S myself too!
great vid ... but the end point is when you got into cams... an engine will only make X amount of power based on how much air/fuel you can stuff in it.. larger cam(s) = more horsepower/ torque numbers equals biggest bang for the buck, the longer you hang the valve open the more air/fuel you can stuff in it , intake and injector size only really comes into play at high rpm for v twins, and the dyno numbers don't lie. anyone who knows about engine building, be it V twins or V 8's will tell you the same thing, the key to it all is finding the right cam profile for your application, like you said, the stock throttle body/ injector is more than enough until you get into the 120 cubic inch range and above, thats when you need a larger fuel supply and at that point is just becomes about bragging rights, thats my opinion. keep up the good work.
Thank you, I appreciate it! Totally agree, there just comes a point in the cubic inches where it's bragging rights. I've seen some 95's lay down some horsepower and torque right inline with the big inch motors.
@@GixxerFoo you are right about 95's and stroked 96's cranking out large numbers on the dyno, but then you start getting into reliability issues, because of heat and I'm pretty sure you talked about that in another video, it's like when this new shop opened up just outside of where I live and he was having an open house, buddy showing off his in-house dyno and machine shop and starts bragging about how he can tune a stock 96 to over 100 hp.. he had about 3 guys on the hook.. and I just asked him if he was talking about doing a stage 2 or 3 to a 96. he said nope just stock with the existing ecu and internals. I just rolled my eyes and walked out the door. There's a sucker born every min, don't know if any of those 3 bought the kool-aid or not. Not even sure if he's still in business. I kinda stumbled on to your videos, and I like what you have to say with the no real bullshit approach, tell it like it is looking forward to your next series. Ride safe. Cheers from the Great White North
Great info as always!
Thank you!
cam lift/duration, port size/efficiency as well as exhaust also influence how much air a given engine can move. Agree though that just putting a bigger and "better" AC or throttle body isn't necessarily going to help much, all else being equal.
You get some high compression and good ported flowed heads and a throttle body will make a difference there too.
Naw and it really don’t make sense and I’ve seen throttle body’s actually hurt power but your still can only get out so much air to begin with it seems like it used to be of how the air was going in like the Venturi methods that some air set up’s used u really don’t see much like that
Really interesting. Though I don't have a big displacement Harley, it's good to know what a difference the cams make + a good air filter/intake.
Another great & informative video, Sir. I hadn't realised the intake manifold on M8 was made out of composite material till now. If you consider that even the tappet cuffs are made of plastic, everyone can draw conclusions about this engine. Old school never dies, lads!
They keep trying to lighten everything up where they can and produce it cheaper and faster these days, old school is where it's at!
Dirty dealing, for The Motor Co. Charge big money, but use Mickey Mouse parts like this here, and there. Then, got the nerve to upsell you Screaming Eagle Parts!
My beef, why not come factory with the part?
Corporate greed.
You have make sure you keep your air velocity up. If you go to big you will loose velocity and loose your low end power
That's exactly what happens with large intakes on smaller displacement bikes, it might help on the big end to a degree but torque and low end can suffer.
Each to their own. I had fun hopping up my first twin cam which I should have kept that bike but I didn't. Oh well. This one now hasn't gone so well. 103 stage 2 kit honestly hasn't been impressive. Then there's been the part here and there that had to be replaced. Hunerd dollar here, hunerd dollar there, and, and one of the owners said he thought I needed compression releases. I'm not throwing any more $$$ at it. It was good stock. Not now. Think I'll get me a Evo and call it a day because my clock is ticking so fast on my frame that I just want to putt around and enjoy some good ol' simplicity because I'm tired and burnt out from all the horse💩. I sure wish I had all the money I spent on stuff and things when I was younger. Now I'm craving a little peace & simplicity. Good luck and have a big time.
Another great one buddy
Thank you Louis, I sure appreciate your support!
Great content mate
Thank you! I appreciate the support!
I'm still carbureted but good info as always brother thank you
Carbs work the same way too, sometimes you flat need a larger bore carb to get the air flow needed too!
Raising compression will help bigger throttle bodies too, but secondary to displacement. Keep up the good video’s!
That does help for sure, just sticking a throttle body on a stock bike is really a waste.
May need bigger ports & valves or 4v heads.
I like the dual barrel Webber down draft side mount on a alloy cast manifold sharing the same airbox to get manifold balance.
Thank you!🙂
Any time!
I’m with you. Great and informative video.
Much appreciated!
Great tech info as usual
Thank you!
Yes air pump with a volumetric efficiency of around 60 modern engines are in the upper 90s to do with the dragsters and racers do change the crank and the cans Nancy we did all that work with a more efficient motor
Cams are the way to go. At one time I had a raked / dropped pro street Road Star with a bored / cammed motor and a large throttle body. That thing was a fire breathing monster compared to my bone stock 03 Fatboy I have now. It was very unreliable due to all of the "customization" work done to it (I bought it that way for next to nothing). While I do miss that kind of insane horse power, my HD is extremely reliable.
Cams make a huge difference for sure, lol yeah getting someone else's custom project can be an adventure for sure.
Great content again ; 👍👌
Had the twin cam out 88 to 95 and did the over 3000 rpm bit . Pulls like um freight train now with 95 inch high compression pistons. Had wife’s 96 tc out same day . Did a roll on in top gear at 60-65 mph on grade with both bikes . The 95 inch showed more power and pick up than the 96” . Next I’ll do a compression test . See what numbers I have now . Had 125 psi before big bore high compression kit .
Then mpg test .
Many thanks for info as always- ✊🏻👍👌😎
I'm curious to see what results you end up with there!
@@GixxerFoo many thanks ; I’ll get the numbers and share -
✊🏻👍👌
3v is optimum on lrg capacity bores.
500cc - 750cc per cyl.
Automotive have been using plastic intakes for years, so I don't 100% believe the perceived future reliability issues with the composite intake on the HD
Automotive engines are also water cooled and don't experience the extreme head temperatures you see on a air cooled Harley. There's really no air flow to speak of in between the cylinders and the fuel tank traps a lot of heat in that area. Head temperatures can realistically easily exceed 300 degress.
@@GixxerFoo They are water cooled (except my Corvair :-)), but also under a hood and often in the middle of a V of cylinder heads and engine valley. I know the composite will not last forever, but I am optimistic based on the lack of evidence from the automotive side after a couple of decades. Also, there is a benefit of very low thermal conduction to the air charge. Only time will tell! Great video BTW - cams are where all the magic starts, and everything needs to play well together.
Yall hit the like button, it changes colors now.
Nice video as always 👍🏻
Yes it does! Thank you!
Always enjoy your informative and entertaining vids - PLUS your not trying to hard sell me something .. Cheers.
Thank you, I really appreciate it!
Hey been watching you for awhile love your video: very informative. I got a road glide limited with a 114, if I wanted low end torque which cam do you recommend. Plus I am leaning hard towards Krome where’s 2 into 1 exzast
That's awesome! Love to hear from all the viewers! Hummm so you just want low end torque on your 114, honestly it's hard to beat the king of the hill with the Wood WM8-22XE. That sucker just does it all, it's even got more bottom end than other manufacturers torque cams but it still screams to redline.
It depends a lot upon how much displacement you have, and how much cam you're using.
If you're putting mild cams in a 96 Twin Cam, then, no, you don't need a bigger throttle body.
If you're putting a big bore kit and big cams on a 103, then, yes, it's time to go to a bigger throttle body and intake.
With EFI, erring on the large side doesn't really hurt much, unless you do something entirely stupid.
Excellent.
Thank you!
I tell people the cam is the brain that tells the motor what to do and how it functions. It doesn't matter what else one does to a motor (heads intake exhaust etc), it won't change how much air the motor moves until the cam is changed.
Should have added ported heads to help with the flow of the throttle body. If the hole don’t flow the throttle body won’t help
Flowed and heads are an absolute must even with a big inch engine to really take advantage of the throttle body.
Moonshine Harley has also done some work with throttle bodies. HPI is worth looking at. Some of the monsters Moonshine have built I often wonder if they are ever run and what fails first, second, then third.......fourth . ...
Moonshine's builds for sure need those big throttle bodies and intakes as well as the biggest exhaust you can get. There builds literally are too much for most off the shelf aftermarket exhaust systems.
I subscribed to your channel a while ago because of your motorcycling and mechanical knowledge. You’re an impressive guy and I’m curious how you feel about H-D mechanics who believe that, once you open the motor, you open yourself up to problems? There’s no doubt that the numbers are impressive with a lot of these mods; yet do you think as H-D owners we take unnecessary risks by going down that road?
Thank you! I appreciate it! Yes and no, if you're just doing a mild cam that's not going to cause you problems. Beyond that it's okay to open the motor but be willing to open your wallet and not cut corners. That's where it's get expensive, but it's more expensive to cut corners and shell a motor. A engine that's built right with all the supporting parts is just as reliable as a stock one.
@@GixxerFoo Thanks for the feedback; good to know. I've toyed with the idea doing a Stage 2 or 3 on my '21 Street Bob, but the most credible, certified mechanic at the dealership told me to keep it stock. He said the risk is too great for problems down the road and it's best to just keep your motor stock. I'll ask him about the cam; although am sure you're well grounded in your analysis. Thank you again. Have a great weekend. ✌🤘
447 SE cam with stupid Harley tuner
Did go with the 55mm aluminum intake bc why not.
92/110tq
I’d have preferred a 30/30, PV, catless head pipes
But first new bike so wanna keep the warranty.
I will say the thing lopes like a damn 30/30 and pulls hard af
No cap I dig it more than the 468/PV tune I had on my last bike.
Miss the catless headpipes tho.
I was told since my bike is a 2023 the EPA
Regs are even worse and the Harley SEPST won’t be able to tune catless headpipes and a larger cam.. it would ride like ass.
For now I’m very happy tho
No regerts
No. A throttle body and intake will really not do anything on a stock engine because the fuel and air still waits at the closed intake valve until it is ready to be used. Back in the day that was the culture in cars. If I only put that Holley four barrel and intake I will have a race car mentality. The words on the box always say increase in performance. It is kind of vague. Atmospheric pressure is still about 14 lb. per square inch at sea level. The intake mechanical part has to change to allow more in when the valve opens and even then you are limited by the piston suction when the valve opens. There is always forcing air and fuel in over atmospheric pressure on a stock engine. For a factory engine power increase it was always valves, camshaft and compression. This is another great video and honest right up front but I think Harley would not be happy watching your content as it ruins their sales to the uninformed.
Just blows my mind all those SE kits come with those big throttle bodies, they don't need them with those SE cams in there. Lol yeah I don't see any invites from Harley-Davidson coming to the channel.
@@GixxerFoo This is why I love this channel. If you are a Harley guy this is the channel to watch for honest engine talk what is actually needed and what the honest result will be.
Power resides in the cam.
Always and that's exactly where the SE kits fall short.
The M8 was a game changer with heads that actually breath even in stock trim. Hot rodding any IC engine will uncover constraints to more power and torque. We are dealing with demand VS supply of air as it relates to throttle bodies. All of these throttle bodies potentially are limited further by the spigot outlet size dictated by head inlet size . Anybody can observe a drop in MAP pressure at maximum rpm on a dyno run and know positively their throttle body is in the way of achieving maximum power. How much? Is the expenditure worth the result? People think the throttle body is a brick wall to horsepower and "needed". Truth be told we are dealing with subtilties. A soft wall in most cases.
That's a great point! The big throttle bodies are usually choked down pretty good at the manifold!
I put beull heads on my 05 1200 Harley Sportster custom did that improve the overall performance of my Harley Sportster custom
These horsepower builds are definitely interesting and make for some fun bikes but I'm wondering if anybody is building anything for the other end of the spectrum.
At different points in my life I have used motorcycles for daily commuters. While the bike I have now is not the most fuel efficient due to power modifications I've been seriously thinking about getting a second bike and modding it the other way.
Be super interested in someone taking an 883 and modding it for further fuel efficiency. Maybe lightning it up, adjusting the mixture where it's still safe for the engine but burns less fuel, maybe some other tuning mods too. I wonder if the stock setup is the most efficient or if there are mods to make it even more efficient. Things like that would be interesting to see someone go that direction.
Just did hpi throttle body and worked heads on my 103. Already had high compression pistons and 585 s&s cam. Went from 94hp 104 tq to 105hp and 109 tq. Pretty good gains in my opinion.
That's not bad at all, you have the setup where that throttle body is beneficial with the high compression and worked head. Your moving some air velocity through that motor!
I've got a 07 street glide and want a little more go than what I have but don't wanna break the bank...
Once you get pipes, air cleaner and tune the next step up is a cam swap. Not dirt cheap to have done but it's a big bang for the buck, in my opinion the best power per dollar upgrade you can do.
I really like my 13 heritage then I got a Sportster 1250 then a Pan America then I decided you only live once I went out and bought myself what I always wanted a vmax.
Damn you've got to own the latest and greatest Harleys, those are hard to get your hands on right now! That new Vmax is a monster, at least the new one stops and handles. Lol the old Vmax had way more power than it had chassis and brakes lol.
When I told my mechanic i mainly ride in the 2500 - 3500 rpm range and wanted more power when passing slower vehicles, he recommended Wood 555 cams in my 2010 FLHTCU with a stage one TC96, dialed-in with a TTS tuner, and I felt a huge gain in power. I have not heard you or anyone else on YT recommend this cam. Are there some issues with this cam and tuner? My mechanic wants to install the same cams and tuner in my current bike, 2011 FLHTK with a stage one TC103. Your thoughts?
If aftermarket cams make this much difference what keeps Harley from being more aggressive with their stock cam profiles, the EPA emission standards? Or is it for warranty considerations due to more engine stress from higher power output….or both?
Love your vids! If I do a cam and air filter on my 107 m8 using stock exhaust will it be worth it? The cobras and Vance and Hines on my twin cam were just too loud.
The exhaust will hold it back, but you will notice a big gain over stock. Have you tried quiet baffles in the aftermarket exhaust? Screamin Eagle are pretty quiet but they flow pretty well and make big torque. With the stock exhaust your horsepower will be held down but the torque will be really high and that's not a bad thing.
@@GixxerFoo I tried a quiet baffle in the v&h pro shots but they were still very loud. I had some screaming eagle pro tour slip ons on a 04 Electra Glide I had but I see they don't make them anymore. I'll probably just try the stocks and if they don't do what I want I'll have to upgrade.
Great video! which D&D exhaust would you recommend with this set up? (64mm intake, wood 22xe)
D&D has come a long way, they honestly used to be junk back in the day on sport bikes. They would have exhaust for sale before a model even came out. The Fat Cat makes some really impressive power from what I've seen!
See, that's the thing about The Motor Co., that bothers me. They install a plastic intake manifold, as factory.
Why not the aluminum one, like EVO's, T/C's came with?
Yeah, they upsell the alum. one to you as an "UPGRADE."
Double dipping into your pocketbook. For aftermarket parts, no S/E for me. Just on principle.
I agree, it's a pretty crappy marketing strategy for the customer.
Cam , cam , cam , Best money spent , do your research , you won't be sorry
Bingo, cam is the absolute best bang for the buck. You might spend 1500 bucks if you pay to have it done but the power per dollar is awesome!
I have a sportster. 10.25:1 compression hammer 1275 with 570 cam. Would cnc heads work good with this set up or would I need to bump compression to 10.5:1 and use the 560 cam? I want to keep my set up but add the heads to hopefully keep my monster mid range but add a little more top end.
What do these larger cube Twin Cams come with for cranks and crank bearings that they can stand up to this power, but my ‘06 Dyna 88 inch TC will need the Timken bearing setup to handle? I’m planning on maybe cams with a cam plate along with a high volume oil pump and later boring the cylinders to 98 cid along with CNC ported heads, but you’ve got me so worried that I’ll shell my crank out I’m wondering why this doesn’t happen with these bigger cube, more powerful TC’s that you’re talking about here?
High Vilosity where you need the power big throttle body may not do it. Only top end
Bingo! Exactly, same concept as unbaffled open exhaust. Works great and comes to life wide open but does little or nothing, even worse hurts you down low.
Hard to believe they have plastic intake manifolds. "RIP HD 1903-1999"
Excellent video again and one that really made me see the difference on Stage IV SE vs just the Woods cam. As I understood the video, the StageIV would put out less HP/Tq than the Woods XE? If this is correct, the difference in install at the dealer (7K quoted local dealer) vs non dealer shop install of Woods cam may be huge! Now, I have an M8 under 1k miles, thinking on the woods cam (and a local old guy tech independent shop swears it is a very good product) but , if I go that route, is it a good idea to install the aluminum intake? And since I have already free flowing intake and rinehart slip ons; would I need anything else ,other than the Power Vision and a "good tuner"? Thanks!
Wood's 22XE is absolutely right up there on par with the SE Stage 4. The Screamin Eagle cams really hold everything back in their kits, but they are also designed to be emissions compliant too. It's worth an aluminum intake while you're already in there, they flow better and do pick up a couple horsepower points too.
@@GixxerFoo Good to know , thanks! With the new FTC issue, my dealer says he can install a woods cam , but I have to use SE tuner, does that sound right?
the Woods 22XE is an awesome cam, as he mentioned the SE cam is made to be "compliant" without having much "lift", the Woods 22XE has 472 degrees of lift, I was torn between the Woods 22XE and the Star Racing 30 / 30, went with the 30 / 30, as it has a very early "close", 29 degrees, this post was a year ago, so you may / probably have made your changes, I went with the S+S 55mm aluminum intake manifold, along with their cam plate, oil pump, tappet cuffs ( important to change) and lifters, I also installed the Trask tranny cover to reduce the pressure in the crank case, ride safe!!@@mymm6327
I meant to add, use a Power Vision tuner, not the SE
Went with a recommended shop and they liked the S&S 465 for the Ultra
's weight. I had improved power but nothing to brag about. Found another shop (in town vs having to drive 1.5 hrs) that told me the 465 is actually a good one for my bike as well, waiting for a TM and a Dyno tune with them. Now I played around with my bafles since I had a hiccup on 1st gear after the 465 install with a tune-map. Talked to FM they said it was exhaust velocity issue, bought their tunable inserts and ended up taking the original baffles out and just running the inserts alone and now I can really feel the power increase in the 22-3k range and also improved top range...cant wait to see what the TM and the tune will end up at. @@michaelthompson7001
Is there an easy formula to equate displacement and head air flow numbers to cam lift and duration for max performance in a given RPM range?
There are some formulas out there but I don't know about easy, I think Hammer Performance had a calculator you could download to calculate some things like that.
125 horsepower is just phenomenal. Nobody needs that much power but, as long as you don't override your brakes and suspension.... Personally I like a 75 horsepower Sportster but I wish I had better suspension and better everything actually.
You can put some money in a Sportster, Progressive suspension makes some rear shocks in the 30 series which are a huge improvement not stupid expensive. If you go nuts and spend about a grand on Legends rear shocks and a good fork kit a Sportster can ride as good or better than a touring bike.
I'll take my 104 HP, 490 lb. Buell Ulysses
Have you made a video on turbos?
I have a 883 2006 carb, Harley Electric Glide standard, with a small cam I have a S&S carb what can I do to get more out of it
I really enjoy watching your videos! I recently bought a 2021 fat boy with a 131 stage 4 kit. Do you have any recommendations in making a little more power? Would changing the spark plug wires affect it negatively, I would like to put some Harley orange ones on for cosmetic look.
Forgot to say I bought it new in November 2021 and I’m right at 1k miles. Im 3 days it is scheduled for the final tune and initial break in maintenance
Doc Harley did a video on that. Basically a cosmetic change. Based on that video I changed mine to the orange. They look great just another expense to personalize.
With a 131 going with some Screamin Eagle orange plug wires will really look good and in my opinion they sound better with them. I know makes zero sense but I've done it to all my bikes, even my wife's bike said her bike sounded different in a good way. I know makes no sense, but my dyno says it makes a difference lol. If you get bored with the 131, swap in a new aftermarket Wood cam, that will turn it into a whole new animal.
Nice! You'll finally really get to let it rip and have some fun!
@@GixxerFoo awesome thank you for replies fellas!
A high flow ac and a better exhaust. The larger throttle body only shows at the upper end of the rpm range. After the stage ii kit the gains get smaller and the price goes up. Same goes for head work.
That's very true, Stage III kit for the street is about all you need. The Stage 4's make great top end power but the 3 matches it through the low and mid range.
@@GixxerFoo personally I do t even think I’d get the stage iii just stage ii. Yes, there’s gains but if you want to go fast you can do it way cheaper other ways on another platform.
Just because you can smash a square peg into a round hole doesn’t mean it fits.
Don't you have to do, some head work, ( enlarge the ports, on the head & polish the ports) if you put a 64mm intake manifold, with 64mm throttle body?
You don't have to but it seriously it would be very beneficial using a 64mm.
Need to measure the dynamic pressure in the cylinders.
The Harley's are usually way negative by like 25%
Cudos on your work, riding 03 se cvo twin cam, sucker is quick. What would you suggest to gain maximum hrspr/torque. Thanking you in advance. Mike Clifton,N.J.
A bolt in cam swap makes a huge difference, check out the Wood TW7H or TW222. Big torque and a nice horsepower boost as well.
110 se twin cam with 2:1 exhaust makes more power than a 114-117 m8
No they dont work unless you want to build a custom setup manifold with individual throttle bodies on each runner with velocity stacks. You can over air a motor with supercharger turbocharger or compressed air (CAS) system.
Very true, you get into superchargers and turbos that's a whole new ball game.
What happened to the s&s carb swap from stock
Looking to change up my intake manifold and carb on my 2001 tc88. What's going to be me best bang for the buck?
The best bang for the buck would be to have your manifold ported, Hammer Performance cleans those intakes up for about $100 bucks. If you want to replace the CV carb the Mikuni flat slide is pretty hard to beat for the price.
HPI on mine with the s&s 550 cam
HPI makes some beautiful products, they are high quality units!
Wonder what a Milwaukee 8 would do with a carburetor
That's would be an interesting combo, havent' seen that yet!
personally, i would want my average piston speed rev-limited to 4,000 fpm ... that is 5K3rpm on the 4.5" stroke machines.
We're getting real deep in the weeds when it comes to talking piston speed, diameter and all that engineering!
@@GixxerFoo well maybe mention, in a future vid, that people who diable their pin-oilers ( "oil sqirters" ) are risking scoring their pistons..
and that the pre pin oilers will need high volume oil pumps installed with aftermarket cams, to increase big end sling.
@@GixxerFoo they can add cooling if they disable their pin oilers, and then Maybe they wont have a problem.
but i still would not recommend anyone disable them.
I need a set up for a 113 that can put a lot of highway miles on...
Are looking at this for a Twin Cam and what size is your motor now?
Yes sir a twin cam my motor is a 95
2003
Just a question is it possible to get a 131 crate motor on any of the late model Harley’s?
You can put the 131 crate motor in any of the M8 Softails and Touring models now, there's even some Street Bobs out there with one and they are light!
What kind of baffles do you recommend on a 2015 Streetglide Special to make it a little louder and sound good but not obnoxiously loud.Or would slip-ons be a better way to go on a stock 103?What brand would you recommend Reinhart,Screaming Eagle or another brand?
If you're running a stock exhaust and you want to go a little louder you could go the Screamin Eagle route. They are marginally louder than stock, Rinehart has a really good sound and I believe they do make quiet baffles. Even with quiet baffles you're still going to be quite a bit louder than stock.
D&D exhaust is the best
@@jaypee6495 Are they slip-on's and are they sound good loud or obnoxiously loud?
@@GixxerFoo Can you change the baffles on stock pipes or is it better to just go with Screaming Eagle slip-on's?
If you just wanna do slip ons and not full exhaust. Just get Slip ons, there's a ton out that are great, it comes down to what you're looking for out of sound, performance and if you're building towards something else. I like TAB Performance Slip Ons or D&D.
Why is it always about more power , spend your money on maintaining the bike and fuel , just enjoy the bike for what it is.
Because nobody ever got excited over small
The beauty is that as the bike and you evolve together the option is always there to get more power. Sometimes it's not about going fast but adding a cam for more power to have more torque loaded down on a trip for passing or mountain roads.
Sometimes riding a slow bike fast is more exciting than riding a fast bike slow.
Finally a comment that makes sense, my Superglide has a Cobra 2000 fuel enhancer & Freedom Performance exhaust system & that’s it, rest of bike ia stock & my TC 88 hauls ass & has plenty of power. I don’t waste $ on stupid mods, I keep my bike pristine & I ride it often, my 05 has never let me down, 100% agree with you
@@GixxerFoo I’d rather have it and not use it then need it and not have it .
I never liked the looks of high air flow. Just another reason.
OK, what is that motor at 50 seconds? It looks like big bore shovelhead/evo cases with custom aluminum cylinders with through studs like an evo and ???? heads I have never seen before.
That is one trick big bore shovel!
on your chart at 3 mins 44 secs it shows 3 graph lines , you spoke about 2 , what is the third , please .
@GixxerFoo Do you know what company offers Porting Throttle body services? My intake manifold is already ported
Hammer Performance does a really awesome job and very reasonable!
@@GixxerFoo thanks looking them up now