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Mercury 3 5 hp to 5 0 hp upgrade Kit
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- čas přidán 27. 07. 2020
- Mercury 3 5 hp to 5 0 hp upgrade Kit installation, Testing and Reviewing the 3.5 hp to 5 hp Upgrade Kit. Aluminum Propeller and Carburetor on a 2020, 3.5 hp Mercury Four Stroke Outboard Engine.
I know when I see an RV, a mercury engine & a Jeep I am dealing with a man who knows his stuff! Thanks for this amazing vid my friend, buying the kit for my 12’ Jon today 👍🏻🙋♂️
Fish On...
I myself have a 2020 Mercury 3.5 hp. Four stroke and I am having issues with my plastic prop ventilating and spinning up on revs . I am also having carburetor issues at low idle...it sometimes does and sometimes doesn't idle it cuts off. So I also noticed this kit as well and I am grateful that you installed it as I am interested in doing the same. I also noticed that after installing the kit it may be a good idea to add an inline fuel filter. I noticed that this model didn't come with one from factory. All on all I hope that this will help my West Marine 10 ft. Tender. Thanks for the demonstration.🙂
The Tohatsu version of this outboard at least has a inline filter inside the hose which you can't see! If you try to fit an inline filter it won't run as it doest have a fuel pump to pull the fuel through I tried it and it simply cut out and wouldn't run.
This upgrade carb is IDENTICAL to the OEM 3.5. Throat bores, all the jets, everything. Installed it and tested on exactly identical glassy conditions and both times maxed out at 8-9mph. No more revs, nothing. So i eventually said screw it and bought a 5hp merc that weighed about 15 lbs heavier (no big deal) and now the dingy does a solid 13-14 mph in windy choppy water even. Huge difference. This Ready Set Boat carb/prop "upgrade" is total marketing snake oil.
This is absolutely false. The venturi is larger and the carburetor is certainly not the same as the stock 3.5hp. Other customers have clocked higher speeds after the upgrade and also frequently comment on the acceleration improvement talked about in this customers video. Also, if your name is Terry Kannedy, then you never purchased this kit from us. I see no orders under your name.
Excellent video thank you, I think your the only one to review this product when my 3.5hp gets here I may order one if it needs it. Cheers
Typical American red-blooded male! Blows off finishing the siding on the house to upgrade the bass boat. Well played Sir!
Had to take a break from building. Plus I'm added a garage to that end . But your right, I do put fishing first. Lol
Next time you're opening a Split Pin, use a Standard Screwdriver, pushing it into the end and slide it in, pushing them apart.
To continue our 2.5 improvment we decided to had an hydrofoil, we hope it will reduce cavitation on father’s Gala C380. Because on 2/3 of trottle speed reducing and the prop doesn’t push water anymore. Go look see.
I have seen a lot of comments of this motor not idling smooth. One thing I have found is that this motor does not like Star-Tron very well. If your mixture of Star-Tron is too rich, at idle it will almost stall and then jump up in RPM's to a high idle. Use Star-Tron very sparingly and that will solve some of the idle problems.
whats star-trone?
Star-Tron is an ethanol killer. It is highly recommended as an additive for outboard fuel mixture.@@motorikiller3150
I've heard the carb on the 3.5 has problems, but on the 2.5, no problems. I'm leaning towards a 2.5. I was curious too about the plastic prop, and you answered my question. I plane to put this on a 12ft jon my buddy has sittin in his yard. The only water his boat has seen in years, is when it rains..
u mean the 5hp carb works with 2.5hp mercury just fine?
Great Review, seems like a bargain upgrade for what you get, plus sounds like a really sweet motor. I really need 6 hp minimum for the yacht tendrr Dinghy I'm getting, but I'm going to check out the Mercury range of outboards over here in UK after hearing that running so nice. Best Wishes and Tight Lines. Bob. 🏴
Ciao, ho smontato il mio 3.5 e ho trovato un carburatore che mi sembra più grosso, ha un venturi con scritto sulla baionetta 160 e non 130 come ho visto in altri 3.5 qui su CZcams e ha la larghezza lato aspirazione di 20 mm invece che 13 mm
Puoi aiutarmi a capire?
great video, just bought a 3.5 mercury today before watching the video, going to upgrade to the 5hp, will save me 300.00 plus shipping cost if I were to actually buy the 5hp...Thanks
You can't make a 3.5 into a 5HP from a carb change.
@@rsilvers129 it was a carb change as well as a propeller
@@dorianruiz3213 The carb is not going to do anything. The propeller can make a difference. Same one on Amazon: SouthMarine F6 Aluminum Alloy Propeller 309-64107-0 30964-1070M for Tohatsu Nissan 2.5hp 3.5hp / Mercury 3.3hp Outboard Motors 7.4x5.7
@@rsilvers129 you are right sir. I purchased the kit and logged all the speed data before and after. I got better performance with the lighter plastic prop and original carb. This is on a brand new merc 2022 3.5. Also if you buy the kit you wont be able to return it when after you try. huge headache. I would stay away. I dont understand this floating myth that the plastic prop is worse because it flexes. All props flex. Its normal. Putting a heavier aluminum prop on this small motor will not net any performance. I wish I did my research before hand. The kit comes with zero specs on the prop, which looks exactly identical to the plastic one and there is no spec sheet with the "bigger" carb.
Thanks, great video, I have the same boat. Thinking about getting the mere...
Many thanks from France 👍 I’ll tried to upgrade dad’s 2.5.
Did you try the upgrade on the 2.5hp?
@@mathowell5014 Yes we did it with New carb and propeller 👍
@@florentborie5813 did it helped?
Yes sure I did some speed test with my Garmin watch (I lost datas) but it’s definetly better. 👍
@@florentborie5813 any lucky?
Awesome video. Can you share links in the description to the prop and carb parts?
www.readysetboat.com/mercury-3-and-a-half-hp-to-5hp-upgrade-kit-carburetor-and-propeller.html
I'm going to follow your lead on the upgrade, I have a 2018 model..I keep having the problem you mentioned on throttle up. about half the time it will die..I have cleaned the carb & reset the pilot mix to 1 1/2 turns in an effort to improve idle. Hopefully the upgrade will fix that hesitation. You mentioned the cause could be to lean on fuel/ air mix. Should i try to increase 1/2 turn on pilot (2 turns from stop). Also noticed the pilot mix adj screw is on the motor side, can you adjust with the tank raised from the mount in order to hear idle vs pull carb off again, if that makes sense? Glad to hear the upgrade could be the fix. You produce great content videos & thanks for the help.
Excellent video well explained thank you sir👍
Awesome Video! My dad and i are considering the carb upgrade when we get a 3.5 merc for our pond prowler 10, what type of range are you getting out of the upgrades with the internal fuel tank?
I would like to understand how you can manage to upgrade a 3,5 hp 87cc to a 5 hp 123cc , just swapping the carburator. It's a scam.
The Kit comes with a larger Carb and Aluminum Prop. The concept is this will produce the same Thrust as a 5 HP. All I can say to you is, the Kit worked very well on my outboard. It made a very noticeable difference in the performance of the outboard. I am very pleased with the outcome of this upgrade. Carbs response better and the Prop is a major improvement over the stock plastic prop.
its because it IS a scam and you wont be able to return it once you try it. STAY AWAY
finally someone has some sense
@@the_old_standardso every 2barrel carb that was changed out to a 4 barrel Holley carb was a scam too for added horsepower?
@@Oliviaswaxtech jfc has nothing to do with anything . go ahead and buy it. please.
Where can I find this upgrade kit? And can I do this on my 2.5hp 2018 mercury. I hope you answer you’re the only person I have found
A company called " Ready set Boat" .
Great, thanks again. Happy boating!
So the pitch on the props are the same it would appear, only difference I can see is the material.
Yes. But the aluminum props performance is much better. For me it made a big difference. I have more Thrust not speed. The motor doesn't load up like it did. I'm sure others will have different results, but for me it was a very good upgrade. Thanks for watching. Don't forget to subscribe...
Hey I bought this kit looking for more speed but I had no difference. I know you weren’t looking for speed but did you notice a increase in speed when you were testing
Yes , we had a slight increase in speed. However, the speed increase came when we moved the payload forward to better trim the boat. Check out the video I did on trimming this small boat. It really helps. Thanks for the comment and watching.
I really like your videos..I have a general question you may help me with--I just picked up a 3.5 Merc for my Pelican Bass Raider however, i am a bit concerned with trailering (utility type trailer). Do use a transom saver for this small motor or do you just strap it down tight?
I leave it straight down and use a bunny cord to secure the lower unit to the trailer. It doesn't bounce or move works very well.
Thanks for watching.
I carry the motor in my vehicle
Wow that hums nice , no bog down
Made a Big difference...
does changing carburetors from 3.5hp to 5hp increase speed? or just acceleration?
Got maybe 2 MPH more. For me, it was about having more trust...
I got the same boat... My question is... I'm looking at buying the same outboard.. How much does the prop sit under the waterline since the shaft is on the shorter side..
The prop is 6" or so below the boat. I've had no issues with the prop blowing out or being to shallow on the boat. Its a really good fit to this Boat. The upgrade really helped the Outboards performance when the boat was loaded down. You can run through some really shallow water with no issues...
Thanks for the question.
@@LifeisaHighwayRV thank you brother for the quick reply.. That really helps my cause because I'm going to get it today and needed that info... Appreciate it.
thank u so much from frence :-)
Great video! Do you have a link to the company that supplied your upgrade? Thanks!!!
I can get for you, but I'm traveling. So it will be a couple of days or just goggle (Ready Set Boats). However, if you can't find it, I'll send it to you.
Thanks for watching.
Hey, have upgraded just like you did. At first my plastic prop was damaged so had to replace. Your video made me do the carb update.
I was wondering if you have had some issues with overheating since then as I read they do tend to overheat because of this upgrade. Do you think this upgrade wille affect motor life?
No, I've haven't had any overheating issues. I have made a 10 mile trip up the Navasota River with 3 people in the boat with no problems. Make sure the pump is working properly. You should have a strong stream of water when idling. If not replace the water pump impeller. Not that you have; But, Never run the motor out of the water. Not even for a few seconds. This will immediately damage the water pump.
I have 2.5 hp can i upgrade it to 3.5 hp ? Or possibly 5hp? With also changing the prop?
I'm not sure. Contact "Ready Set Boats" and see if they can answer your question.
Thanks for Watching!
Would You be so kind to advise, any additional readjustments/settings can be required after installation of mentioned kit, mostly concerns carb?
Thanks for attention.
The Idle is the only adjustments you may need to do. Carb is pre jetted.
Taken into consideration.
Thanks
Thanks for this great info!
I do wish somebody would make a real comparison video.
is it a different carb or just bigger jets?
It's definitely a bigger carb. You can see the difference. The jetting is way better. The Stock Carb is to lean on bottom. This carb upgrade runs very well. I've had NO issues. For me, it was a good investment.... Thanks for watching.
@@LifeisaHighwayRV thank you, I've watched a few of these videos and it wasn't clear if the carb is actually bigger or not.
Have you noticed much difference in fuel consumption?
Very little. Not enough to be concerned about. Thanks for the comment...
I have the tohatsu 3.5 .I have a 7 foot Inflatable boot.. my top speed is only 5-6 mph. Is it because it's an inflatable with an inflatable keel. Should I be getting better speeds.
I'm still using the stock prop.
Could be. Inflatable boats have a lot of flex in the water. This creates drag which slow the boat down considerably. Most inflatable boats designed for outboards normally have a wooden keel.
The aluminum prop makes a big difference. Or at least it did on mine.
Excellent, thanks
at 8:47 in vid you droped one of the steal sleves that go in the plastic breather did you pick that up and reinstall later???? not relly required but with out it the plastic can crush over time making the carb loose .....greate vid I did the same to my merc 4hp making it a 6hp with carb replacment and very happy with the power and it was cheaper than simpley buying a 6hp by about $200 ..
I know I did pick it up AND install it. I ust edited that out. THANKS.
What bore size is the 6hp carb? This kit 5hp carb is 18.9mm same as the 3.5hp but the inlet manifold measures 21.5mm so potentially more gains to be had.
Did you ever put an external fuel tank on it.
No. Never had the need.
I got a 2.5 Merc. Looks like same basic engine as the 3.5. Do you believe it would work just as well on it as your 3.5 ? Thank you
Not really sure. However, if you contact "Ready Set Boats" im sure they will be able to provide ypu that answer. Thanks for watching...
Do you think if I just put the aluminum prop on it would help it. I’m inexperienced with outboards and I was wondering if just the aluminum prop would help
Yes. The aluminum prop will help, but you won't get the increase in HP.
The prop in my kit was marked 118×115 meaning the pitch is now 4.1/2" instead of 7" so it will help tremendously.
I’m a little skeptical of this upgrade. The 5hp Mercury is almost 50cc’s larger than the 3.5 in terms of displacement. Adding a 5hp carb is not going to increase the displacement. I also think the prop has less pitch, in of itself will increase rpm’s under a load. I would like to buy an aluminum prop to replace my plastic one, but I will stick with the 7.0 pitch. I really believe the upgraded carb does nothing for engine performance, and the increased rpm’s under load has everything to do with the reduced pitch prop….IMO
Did you notice any performance differences
Yes, it had better lower end and more top power...
Where i can buy those things for my mercury?
Ready Set Boat
Is there any way to upgrade a 1997 mercury 5hp 2 stroke to 6hp?
Contact Ready Set Boats and see if they offer an upgrade. I'm not sure. Thanks for the comment.
where'd you get the new prop? thanks in advance
"Ready Set Boats". You can buy just the prop from them or the kit.
People be worrying abt everybody else but they own life.
Hi, great video, thanks for them. I have the same upgrade kit only for the Tohatsu 3.5hp engine (merc 3.5hp is the same outboard) after replacing and installing proppeler I noticed that proppeler has a bit of wobble? did you also have it after mounting the proppeler on the motor shaft? the original paste proppeler had a smaller wobbling than upgrade kit. I bought this upgrade to my tohatsu from the store you recommend. Thanks
No, mine did not have any wobble. It fit very well on on the shaft. You my need to add a Brass Sleeve to take up the slack in the prop. Look and see if the Old Plastic Prop has a sleeve in it. You may be able to change it out. Thanks for watching, I hope this helped.
@@LifeisaHighwayRV Thank you for the quick answer you helped me, I have to return this upgrade maybe this propp is wrongly made? Thanks again
What's the diameter of the new carb compared to the old?
Th e carb is physically the same size. The diameter of the venture is a few mm larger. As to how many mm I'm not sure. There was no information as to the size or mm carb it actually is. But, it is noticeably larger.
@@LifeisaHighwayRV Thanks. It's just there are various sized Mariner/Mercury/Tohatsu carbs on Ali Express in various sizes at about £20 - $27. They also have the alloy props at £10 - $14. Works out a bit less than the conversion kits. Had a brand new Mariner 3.5 delivered today!
@@hereandthere4763 see if you can find the specs on a 5 hp. That’s all this kit is (5hp carb)....
@@LifeisaHighwayRV Thanks. There are some there specified as being for the 5hp. I'll order one but not fit until after the 3month/100hour free service!
Great job
Bravo 👍
I don't have any questions but should I still contact ready set boat?
😆lol
Try emailing them. Leave your contact info...
sales@readysetboat.com
So where's the link where I can purchase this?
www.readysetboat.com/mercury-3-and-a-half-hp-to-5hp-upgrade-kit-carburetor-and-propeller.html
Thanks for great tutorial!
Bought the upgrade kit and changed but got no difference whatsoever va original carbirator and prop. Tried adjusting throttle but not better. Changed back no change. And bCk to new again, still no change.
Do you have any idea why I can’t see any change or what I could try to adjust?
Can you tell me more about what changes your not seeing. Email me: rv.lifeisahighway@gmail.com I'll see if I can help you resolve your issue.
Can you tell me more about what changes your not seeing. Email me: rv.lifeisahighway@gmail.com I'll see if I can help you resolve your issue.
I had the same issue.
Mine didnt work at all like yours and the moment you install it you void any type of return with ready set boat. pretty nefarious company
Zero improvement here too. $180 wasted.
Thanks for a very informative video. I'm trying to decide between this motor, the Yamaha 2.5 or Suzuki 2.5. I prefer the Mercury on paper, even though the motor is larger and heavier. The extra 1 hp seems worth it, and this kit you installed makes it all the more appealing. My main concern is the high number of negative reviews on these smaller Mercuy/Tohatsu motors due mainly to finicky carb and fuel issues. Seems to be a serious reliability problem even for owners who take extra precautions.
Have you experienced any of these issues, and do you think the upgraded carb effectively addresses the problem? Also, have you found that the kit improved midrange smoothness and/or noise to any extent? Still liking the motor overall?
The stock carb isn't jetted very well. But the engine does run OK on it, but it has a hesitation on low end that's very annoying. I recommend the 3.5 Mercury and the upgrade kit for it. The Upgraded Carb was a definite FIX. It made an major change in my motors thrust and top end RPM's. I'm very happy with it.
Thanks for the comment...
@@LifeisaHighwayRV So you got to wonder why Merc isn't smart enough to know that and sell the motor with that carb, avoiding the pitfalls of the original.
Yes it fixed the acceleration issue. The motor runs very smooth. And Yes I'm still liking the motor overall. The motor now has throttle response from 3/4 to full. Before it had no change...
@@LifeisaHighwayRV With the same prop? It seems like it was the prop that changed your top-end RPM.
Since changing the carb. The motor runs great. I've had NO issues so far. The hesitation issue i had is completely gone.
I have a Mercury 2.5 will that work on mine? The only difference in my 2.5 and that 3.5 is the carburetor.
Check with Ready set Boats. I'm not sure. Thanks for the comment...
Yes it's perfect for the 2.5hp. Better off buying the 6hp carb from them and the prop separately. The carb is a Chinese Mikuni clone which seems to work well. I'm using it as an aux engine so I also changed the decals from Tohatsu to Suzuki.
@@gb4780 where you get part from?
I have a 2.5 and a 3.5. I wanted to do this 5hp upgrade to the 3.5 I have but the 3.5 is WAY older whereas my 2.5 is almost new..... When I read all of the specs on the 2.5 vs. the 2.5, EVERYTHING besides the carburetor is the exact same specs as the 3.5. Pistons, bore, crank... everything.... so couldn't I theoretically install one of these 5hp carbs on the 2.5 and get the same result as you did? I can't seem to figure out ANYTHING that would prevent the 2.5 from handling the 3.5. I've actually used the 3.5 carb on my 2.5 (too lazy to clean the 2.5 so I swapped it for the 3.5 in a pinch) and it ran stronger.... so I'm thinking this 5hp carb will be even better. Thoughts? Also, I already have an aluminum prop because the kelp ripped my plastic one to shreds...
I'm not 100% sure on this. However, putting the kit on the 2.5 may not have the same results. You can try it and if it doesn't work or provide the best results, just put on the 3.5 and try that. Sorry I couldn't provide the answer you needed. But I don’t have any experience with the 2.5.
Thanks for the comment and watching. Don't forget to subscribe 😉
@@LifeisaHighwayRV I'll purchase one and let you know. I mean... What the hell? Can't hurt.... much...
@@terrykannedy8154did it work for the 2.5? I also have a 2.5
@@Arian_orta Sure did! Granted, it's only 1 pony added, which in the water isn't a huge difference. But I did notice it on a glass water no-wind comparison. What I'm doing now is drilling out the main jet .0001 at a time, popping it back in and testing for more balance but comparing all other things like acceleration smoothness, idle, proper plug burn and of course top end, making sure to keep RPMs in mind. I'm also still using the stock 7p plastic prop that came on the 2.5 platform. I believe it's the same prop that comes on the 3.5 anyway.
I'm still 50/50 on my aluminum prop and the plastic one. Broke one and now using the plastic one that came on the new 2.5 but I have the aluminum one on standby.
what are the dimensions of the propellor?
I do not know. If you contact (Ready Set Boats), I'm sure they will have that info. Sorry I couldn't answer that question for you, but thanks for watching.
Same as a 5 hp propellor?
I'd say yes. But it's also an aluminum prop. So that in itself is a big improvement. You can order just the prop. However; the carb upgrade really helps this little outboard.
@@LifeisaHighwayRV Contact them 1 month ago: no response
They have really good customer service. Try calling again. I'd would call during the week around normal business hours. Not sure if thier open on weekends.
What would u say top speed was
By myself, using my GPS i topped out at 11 mph.
Fish On Adventures thanks 👍
Fishing in The Midwest On my 10” aluminum Jon boat w/me and light gear (175lbs) no wind no current, max speed 12mph. Feels like 90, though.
@@LifeisaHighwayRV what was top speed before the upgrade?
@@alexgolash932 Around the same 10. I really had no speed increase just thrust. Tnrust is what really improved and thats what I was after.
Can you please give information on who makes this kit and where to purchase it ? Thanks
Online, Ready set Boats.
www.readysetboat.com/mercury-3-and-a-half-hp-to-5hp-upgrade-kit-carburetor-and-propeller.html
Thank You
You can find them on AliExpress as well. They are manufacturer in China so their suppliers sell to AliExpress shops as well. Much cheaper same quality.
@@mitchelleersel $40 or $220 is much cheaper indeed.
Will this work on the 4hp motor?
I'm not sure. Contact "Ready Set Boats" and see. They may have an upgrade for the 4hp.
Do those 3.5 Mercs also start in gear? (no gear save or switch)
No.
It has neutral and forward only. The motor will 360 so you can turn it around for reverse.
@@LifeisaHighwayRV I 've meant if it is possible to start this engine while it is in forward position?
@@bushpig8109 Yes you can
@@LifeisaHighwayRV Thanks mate.
Void the warranty?
Dont see why it would.
where can i get the kit?
Online from "Ready set Boats".
Can you do this with the 2.5?
I'm not sure. You can contact Ready Set Boats . They may be able to answer that. But if I had to guess, I'd say no.
It’s interesting because I think the bore and stroke are the same, my Honda 2 went down and there’s a 2.5 for sale nearby me.
I very well could be. Check with Ready Set Boats to be sure.
do you have a factory (3.5 hp) carburetor for sale?
I'm not sure what I did with it. I'm on vacation this week. When I get back I'll look and see if I still have it. If I do ill ship it to for free. I'll get back with you.
@@LifeisaHighwayRV In any case, thank you for contacting me. I would be very grateful if you could find it. I have cousins in the USA who would pay for me and bring it to Bosnia and Herzegovina (Europe). best wishes
Just got back. I have looked over my shop and I cannot locate the old carb. Looks like I threw it out. Very Sorry I couldn't help you. I would been more than happy to send it to you. If I do run across it I'll contact you and send it off. Once again sorry I didn't have it.
@@LifeisaHighwayRV Nevermind. In any case, thank you for your will to hel me. I wish you all the best!
is there any used parts store for these models?
@@pcigra not that I'm aware of.
This carburetor is a scam, it is a piece of crap. I have gone back to my 3.5 and the engine runs well.
I would respectfully disagree. Maybe you got a defective one?
I'm sorry to hear that. Mine worked very well.
I have a 2020 2.5 mercury will the same set up work?
I'm not sure. Contact "Ready Set Boats", They have more than 1 kit and may have a 2.5 conversion kit. Wish I had more info for you. Thanks for the question.