3.5hp tecumseh gets some modifications

[@USA__2023]

Wow, really surprised to see someone doing this in 2020. Back in 1973 I did close to the same to a Tecumseh 5hp I found on a stripped mini bike. Had no carb or exhaust. I put a 30mm carb off an old Honda motorcycle on it. Made 18 inch megaphone exhaust pipe. Milled the head. Removed the governor. Modified the fixed timing ignition to advance with the throttle similar to the older boat motors. Put it on a cheap go-cart and it would get to 60mph in a heartbeat. Thing was a beast.

[@syndeko1632]

How would it advance with the throttle? I might be doing this soon with a 10hp i might buy

[@USA__2023]

@@syndeko1632 I used the same method that older 60s boat motors used. I don't remember which one goes first advance or carb. One the Tecumseh I had The ignition advance could be adjusted. The magneto had slots in it. I just cleaned up the surfaces, put brass bushings in it and spring loaded it to retard. Use a spring tied to the advance, once it's full to the stops you set it will not go further but the throttle will still be able to open. that's if the advance comes in first. If carb opens then advance do the opposite. I really don't remember which goes first, it was a long time ago LOL

[@tonkatank045]

​​@@USA__2023so I'm trying to imagine the mechanisms for that set up. I have a 58' Evinrude, would that be like how the flex plate under the fly wheel rotates with the throttle being turned? Is that what advances the timing?

[@USA__2023]

@@tonkatank045 yes

[@MNpicker]

😯 Im soooo putting one on my old craftsman push mower 😎🤘🏼

[@Johnny-ox1sc]

Great video,hey,can you add the link to that carb,would much appreciate it!

[@powerROBY]

hi, please answer me, I'm about to build a gokart with 2 seats, with a vertically transformed Tecumseh engine, having a clutch with an 11 tooth pinion, which traction sprocket do you recommend?

[@CoreyFishes740]

I love being told 15 times what's gonna happen without actually seeing it happen

[@fantro1064]

Wowww I've got the same bike. Hope you include the carb settings because I'm doing that to my streaker

[@fantro1064]

Hey man did you need to touch the adjustment screws or drill the jet? Mine is on the way

[@TheMuncieracer]

What is the best way to get side cover off h35 do you take the screws out that holds bearing

[@davidjordan5925]

Nice

[@forthemind9556]

I have the same motor but I can’t find a pipe with the same flange that fits I think the flange is 1 3/8.

[@sprrepair4063]

I have a 5hp Tecumseh that'd I'd like to add that carb to. Will it work with the governor installed? Will I be able to connect it to the governor linkages?

[@Sussy-hotdog]

Where did you find the Header with the muffler. I'm having a hard time finding any flange exhaust with a 1 3/8" center to center mount holes? Thanks so much and nice work!

[@1manshop335]

The header and muffler was built by me

[@isaiahavila5419]

We’re did you buy the carb and exhaust from and what’s the name? Very interested in buying

[@absent188]

Hey man I have a question did you remove the govener on this engine and if you did, did it blow up or is it ok to remove govener with just the carb?

[@nickyz0623]

With any engine if you're revving it at high RPMs (full throttle) and it doesn't have a load on it and it's just screaming for dear life, it's going to blow💣

[@syndeko1632]

Hi do you know which exhaust I can buy online for a 3hp tecumseh engine? thank you

[@omarmarquez4389]

Nice work. How did u bypass the governor or did u remove it out complete. Thanks in advance.

[@USA__2023]

If it's a centrifugal governor you can remove it, or unhook it from the carb linkage. I would remove the guts to keep them from failing inside the motor. The same goes with a vane / fan type. Just unhook the linkage .

[@williamschisler4844]

What size carburetor is being used, new one?

[@kellyedington8716]

Awsome, i have a troy bilt tiller with this engine and seriously considering this project.. my daughter has a little mm80 bike but she is wanting a bit more power already lol but definitely isnt ready for a 212 or anything...

[@kellyedington8716]

So i have started this project, motor is on the bike now. Im struggling to tune this carb... I have good idle, super sensitive throttle (cable was a tight fit) but as soon as i turn 1/5-1/4 throttle im losing everything... What setting do you have your main needle clipped at?

[@kellyedington8716]

I also had to remove the rear fender to accommodate the carb/air filter and mounted the gas tank up on the rail behind handlebars... The bike is a mm80.... Really hoping to get this finished soon... The power diffrence from the stock 2.5 the mm80 came with struggles on take off... Ill post a vid if i ever get it to run with full throttle lol😅.. anyhoo thanks for the video and all the info so far... Any advice is appreciated

[@donaldbixby9789]

212s suck

[@davidfira2667]

Will this carb allow me to bypass the stock throttle linkage (which is missing I think my governor bar is as well) on my 3.5 Tecumseh? That would be great. Just got into minibikes for the grandkids. any help would be appreciated. Can you recommend an exhaust pipe & muffle that runs through the frame straight back? Thank you

[@1manshop335]

Yes...this carb setup will do away with the stock linkage and governor the pipe I used was an old tecumseh header that I found on ebay there hard to find but I extended it 5 inches

[@davidfira2667]

@@1manshop335 Thank you for the info. This is a great alternative.

[@daregamez393]

Hello dude. Great vid. What's the bore for the clutch please

[@1manshop335]

3/4

[@shaunjoiner732]

Hey gave a question what carburetor did you use it looks like a ebay pz16 carb ?

[@1manshop335]

Click on the link... I pined myself to where you can get that carburetor

[@randallschmitt7297]

Hi there I have the same engine was that a pz19 carb I ordered a pz20 too big wouldn’t seal thanks

[@279eugenio]

Hi, Idk much about engines and sorry for my English... I have a tecumseh 6 or 6.5 hp engine and I want to get more speed out of it, any ideas on what to do?

[@1manshop335]

Remove the governor or get a carburetor like this for more power

[@aarestorations7867]

What’s up man I have this same motor on a manco I restored recently on my channel but I was wondering how the whole removing the governer works is it like the predator remove the gear and plug the hole

[@1manshop335]

I'll make a video on it tomorrow so stay tuned and I'll show you how I did it

[@fangazfunky]

@@1manshop335 did you ever make video

[@absent188]

Hey any clue what that hose to the left is coming out the engine looks like a crankcase breather no?

[@1manshop335]

Yup thats a crankcase breather

[@johnnyholder4050]

How is the port match from the carb to the manifold?

[@1manshop335]

There about the same

[@josecid9986]

mikuni 22mm are?

[@Stingyduce]

How is the fule making it to the carb now that the inlet is on the left side??

[@1manshop335]

Run a longer fuel line the gas tank is still higher than the carberator so it still flows fine

[@Stingyduce]

@@1manshop335 thanks

[@fantro1064]

What did you do to adjust the carb? Got mine today and it idles but you give it gas and it dies. Put the choke on and it runs better but not good at all.

[@1manshop335]

Adjust the fuel Neatle to give it more fuel

[@fantro1064]

@@1manshop335 is that what you had to do? There's two adjustment screws and the clip on the throttle slide. What's your screws set at? And how did you do the gaskets? Thanks

[@kellyedington8716]

You had any luck yet? Im having the same issue... 🙃

[@fantro1064]

@@kellyedington8716 what you need to do is use the plastic spacer with the slot for the o ring. Use the original tecumseh gasket between the intake and the spacer. Take the slide needle clip and put it all the way to the bottom, towards the point of the needle. Drill the carb jet out to .32, If that doesn't work try .39. Turn the screw on the left to 2 and a quarter and adjust to the highest rpm at idle. Bring the idle down and you should be set, give it gas really slow. Not full throttle all at once. Slowly increase the throttle

[@kellyedington8716]

@@fantro1064 thank ya sir, i had it soo close to ready, i did have best luck with c clip on the very bottom

[@279eugenio]

This carb will work on a 6 or 6.5 hp tecumseh?

[@nathanbutcher1864]

I would go bigger like a 26mm carb

[@ALMIGHTYGARAGE]

What about a 5.5 tecumseh

[@nique5409]

Hey what size will u recommend for a 10hp

[@1manshop335]

28mm mikuni

[@nique5409]

@@1manshop335 thanks

[@tux-4713]

What’s the link to it

[@kevinchunasamy9703]

Hi would the bike still be rideable without the governor removed?

[@1manshop335]

Yes

[@kevinchunasamy9703]

@@1manshop335 thankyou

[@1manshop335]

Anytime 🤘

[@ALMIGHTYGARAGE]

Can I use this carb on a 5.5 tecumseh

[@twilli8118]

Will this work on a 5hp tecumseh Go-kart

[@1manshop335]

Yes

[@donaldbixby9789]

Tecumseh didn't have enough money for a China carb??? Huh. I doubt that's the reason. Glad you are an engineer for that company

[@adamisaacks7237]

Where's thr governor arm

[@1manshop335]

Deleted

[@1manshop335]

www.amazon.com/gp/aw/d/B07NTX9X57?psc=1&ref=ppx_pop_mob_b_asin_title

[@Sussy-hotdog]

One more thing. Can you please go back in your Amazon order and confirm this is the correct Carb. The link you posted is for a PZ20. Are you sure it wasn't a PZ16? For the PZ20 carb (the one on your link) to work correctly on a Tecumseh H35 (3.5 hp) they say the PZ20 will need some jet modifications or else you have to leave the chock 3/4 open to get optimum use.... where as the PZ16 runs as designed. So can you do us all a favor and verify on your original Amazon order posted in your account that the link here above is the one you installed or that when you did your test run of the engine in this video, that you did not have the chock partially open. Thanks.

[@1manshop335]

This is the one I bought for this engine

[@ALMIGHTYGARAGE]

Hey got a ? I have this engine but its a 5.5 and has the weird throttle linkage bc snow blower it was used for so tryn to fig out how u could use a linkage for.go kart or I can get this carb if it would work on a 5.5 hp tecumseh thanks

[@1manshop335]

Yes it'll work

[@ALMIGHTYGARAGE]

@@Sussy-hotdog i just watched another KZbin channel if you kept your old jets out of the original carb you can put them in and they will work is what someone else said if your having trouble with that