Secret Tecumseh Performance Mod | One Bolt On = WAY More Power! 

" we have been to that bridge that is where that kid almost drove off" that kid is me hahaha

I had a Manco Red Fox when I was kid. My dad and I hopped it up by stiffer clutch springs in the torque converter, header pipe and by passing the governor. It would legitimately do 57 mph on the road.

"14 seconds on a carburetor swap" annnnd a governor bypass.

I would love to see you guys build up one of these tecumseh engines, I think they have a lot of potential

The "intake pipe" you guys put on could have brought up low end torque too.

Looks like a blast. I've rebuilt and modified nearly 1000 Tecumseh Carbs and have a love for them. They will however always have a dead spot when used in a go cart. They were designed to keep a steady rpm and do a fantastic job at that. If you want to slow or even stop oil blow by, don't use multi viscosity oils: sae 30 only.

The Tecumseh motors can by drastically improved with stock parts. Just mod the carb for crazy amounts of air and fuel. But the performance parts that will take the stress don't really exist. I've seen my dad do it several times and they run like crazy until it blows up, and I mean blow up. If you stay moving you will probably not get hit with hot oil!

8:43 pure joy at its finest

Sometimes simple = better! You guys are gonna LOVE the upcoming Mini Mayhem videos!!

Busco should pay you guys, looks like so much fun!

If you put a pipe on it you can actually bolt the carb right to the factory intake manifold , I have an 11hp tecumseh here with a vm-22 and a straight pipe and it works fantastic . I also have a Manco dingo cart so these videos are great .

9:54 "just some good ol' boys..."

My Tecumsee 's always ran great !.,..ah...I miss those days ! Glad you had a great Mini-Mayhem !!

You know, that janky dual manifold system gives you more torque!! That's why it threw rooster tails! I love how old school this video was, just you guys havin' fun on a go kart, trying to make it go fast without dumping too much money and time into it! Keep it up!

Ike's laugh, in the background, during that test after the new carb, was the best.

Had a Manco Dingo since I was a kid, still have it. Gotta put a new torque converter in it but just like you guys experienced, it handles better than average. I've had a few different motors on it, be cautious as the frame can twist, I was running a 16 horse 2 stroke sled engine in it and bent the frame where the bearings hold the rear axle. It's a strong enough design for every day use, but was intended for a 5-6 horse motor. Keep that in mind when going up in horsepower...I know you guys lol

Please do a full build on the Tecumseh.Would love to see the outcome.

I'd love to see you guys mod the Dingo. First thing that I did to mine was lengthen the frame 6 inches and put a molded seat into it. Followed by a 420cc engine of course🤪

Look up OMB WAREHOUSE they have a billet rod for that Tecumseh

Great to see you guys out at Busco last Saturday, thanks for taking time to talk with us. Gonna work on having something to ride at the next Mini Mayhem. Btw John I really enjoyed talking with your Mom she is super cool! Maybe you should build something for her! :)

Tecumseh engines were manufactured in Murray, Kentucky !!!! I drove for Paschal Truck Lines(...PTL...) and that trucking company and Tecumseh engines were the biggest employers in Murray !!!! It is the home of Murray State University, and they have a nationally recognized college baseball team there too....Amen !!!!

I'm actually doing a Tecumseh build. I have a stock max speed on a Manco Dingo of 26mph. I've only really done the Carburetor so far. I've completely stripped the carb, Removed all crap and junk from inside. I've bent the valve arm some to allow the carb to open up fully! There is also a little screw that holds the butterfly valve to the post that rotates inside the carb inlet. There was about 1/8th of an inch of screw sticking out the otherside, I have completely shaved it down smooth flush to the valve post so it should flow air a little more better. I'm excited to see how it all performs so far. Next is the head. Gonna do the Playdough trick and see how much I can safely mill off. I'm expecting a 50+mph run with no performance parts. Just my own tweeks and mods. Definitely going to add what you guys did here and adapter for the airfilter!

The longer intake runner might have been part of the increase as well. The intake is supposed to be a certain size percentage of the engine volume and factory rarely is.

8:43 THE LAUGH "AHAGGAHHH"🤣🤣🤣

For the intro: you really earn it guys and you doing great work! The first video I saw about messing around with gokarts, crosskarts and all kind of mini-fun-stuff with tires was: 10 reasons why to buy a used kart! You are a great inspiration!

Im super happy to see someone else have the same problems i always had with my tecumseh, tons of power, until you hit a bump, then stumble.

The word I thought of when I saw this is BUMPY

Can't stop smiling watching this........ nice break from the garage.... true!

NR Racing, ARC Racing, OMB Warehouse, they might have some parts for the tecumseh, but if not they could open you up to a whole new world of racing.

Whoa whoa whoa. What's that thing in the background?...

Yes! Finally a Tecumseh build!

I feel like mini Mayham is literally go cart cruising the coast

Wow that thing was flying until Ike decided to go mud bogging, LOL

Had a go kart like this with a Honda motor; absolutely enjoyed every second of it 👍👏🏼 good video guys!

I did give a couple of tips on the comment on the last video of this kart with the tecumseh ohh60 6.5hp engine. I was thinking the 22mm carb would be to big if I remember correctly the intake valve is 23mm and the exhaust valve is 19mm it's been a while an my calibers battery is dead and I dont have a mechanical one. The valves can be changed but they are a larger valve stem. The 245 dyno cam is pretty good cam for these engines I do recommend upgrading valve springs a clone or Honda style spring is slightly larger in diameter so if those being ylused the spring pockets will have to be cut. Oh and note the crank does not have roller bearings like a 196, 212 and so on. They have a bushing style bearing same as the rod and wrist pin. So they will need to be checked. The 5hp ohh50 series cylinder head is a smaller combustion it will help the 6.0 ohh60 engine being a bigger bore. I'll have to get back with you on the bore sizes. Also the blocks of the tecumseh ohh50-65 series engines arent braced well from the casting they designed. So I would definitely recommend having someone tig weld braces on the block very costly but well worth it when the block can handle what you throw at it. They are a very interesting engine to not only run and it run well but to work on. They are very bad for valve lash if not wanting to start...they was based for road coarse racing the f200 class and they was definitely designed for racing and not longevity. I'll see what all other info I can find I wrote down on these engines.

Run a line from the crank case vent down to the oil cap reservoir spot. It would eliminate the issue of losing oil. Maybe add a filter from the crank case down.

13:10 this go kart is stuck, just assume total loss and get a new one. Also you should make a go kart then at the next event hide it, and have a scavenger hunt for it.. whoever finds it has a great day with their new go kart!

We have a couple, they're torquey little Bastards. We have a trail bike with a 6 on it and it's quick as hell and does almost 40. I took a compressor and tank that someone gave me and put a Tecumseh 3.5 on it and it pulls it just fine and it had an 6.5 horsepower on it before that sounded like it was working hard to pump the pressure up. That little engine looks insanely small on the whole compressor setup. Surprisingly powerful engines.

I just bought a maco baja 200, which is almost exactly what u guys have in the video. The 5hp Briggs and stratton engine was seized up. I found a tecumseh 6hp engine used for 40 dollars. Its starts everytime on the first pull. I will end up doing what u guys have done in this video. I paid 200 for the dingo and 40 for the engine. For less than 250 in it feel I'm doing pretty good.

I would have been very interested to see how you guys hooked up the new carburetor with the throttle

I ain’t gonna lie, that roll cage seems janky as you know what. Thanks for the video guys.

i've never thought much of tecumseh engines. they always run kinda funny, and never seemed to have the power of a briggs. and to think, it was the crappy carbs all along. i'll have to look at them a little differently from now on.

Every Tecumseh engine I ever tinkered with had a crappy carb on it. Must be a Tecumseh thing.

Y’all are my heroes and are both so humble. It’s awesome to show viewers you can have fun and be safe at the same time.

The moment Ike burried the cart in the mud I could not stop laughing!

Next time you come to that bridge stay to the right, drive down about another 400 feet and take a left and it will bring you back out behind the first pond on left side coming in the park entrance 😉

If you rebuild it for off-road, I highly recommend rubber or polyurethane bushing under the seat. It absorbs the rough terrain and it worked wonders on my Manco! Can’t wait to see more! JB

Bring back the drift mower pls Also, that roll cage is looking incredibly flimsy

You know those dudes are railing on it 10/10ths seeing it ping ping between its 4 wheels. That seat cushion would be worth its weight in gold. What a cool little kart.

LOl i love how it pulls a wheel now on the start.

the rollcage doesnt do mush , you could see it shaking side to side through the helmet cam the longer intake raises power at a certan rpm band , cannot remember if it raised or lowered it , think it lowered it

The Manco Dingo is a awesome offroad trail buggy I have grown up with Manco Dingo buggys and Honda Odyssey buggys my whole life been all over

Man i miss busco already. That was a good race at the track between the pit bike and and dingo

Gotta love those Chinese pvc roll cages! Life savers, those are!

Please say "Techums-ey" lol. Im from michigan with the namesake city Techumseh. Thats how its said. Otherwise keep on keeping on! Love your stuff!

Ikes maniacal laughter made that! 8:43

Those performance parts sure make a huge difference. I wish they were cheaper to bring up to Canada.

In the sixties Rupp made minibikes that had Tecumseh engines with Dellorto motorcycle carbs. They were fast.

That thing is a BEAST

I don't know where you purchased this go kart but this one is at the very least perfectly identical to the one that I had as a kid. I regret selling it back in 2016. I think this one could have been mine based on how complete it is. So much fun!

I just got a timberline crossfire 150r given to me a few days ago it needs a little body work but everything on it works 100%

Good video! I laughed my a** off when Ike said "I got lost". I had a great time at mini mayhem. I was the guy with the white Van and the klr that barely works.

When do you guys EVER rebuild something to stock ...hmmm Not Go crazy with it ...as usual.

4 bolts seized bolts change the course of a whole build? Yep been there, Actually refreshing to see the diy performance on here again

good vid. build the tecumseh, it's screaming for it. i think ike may have coined a new phrase after having hurriedly devised a way to install the mikuni on the tecumseh, "Jankee Ingenuity".

never seen a 1 second mud dump! Perfect! I would be scared of that go-cart. Cool vid!

5:43 What's that STORMTROOPER doing over there?

Great video guys and I can't believe Ike just dove right off in that mud puddle like that lol

You do see people helping each other in every single Motorsports I’ve ever been involved in although it’s awesome you said it

Put the crankcase breather in the rocker box so that the oil that the con rod kicks up has a chance to settle out of the air, on the way to the breather tube. A pulse fuel pump will still work if you reduce the size of the vent tube, thereby increasing the crankcase pulse pressure.

The Dingus go cart did pretty good

I have a Dyno Cams 255 OHV cam for OHH Tecumseh engines. It'll work on your 6 HP Tecumseh, let me know if you want it.

Looks like a ton of fun but that pit bike kinda sounds like crap at part throttle and slow going.. may need to look at a different carb or something.

We all heard you back off on the jump for your timed lap “you chicken 🤣”

Where was Isaac at the end? I could hear him talking but couldn't see him. Oh there he is. I couldn't see him for all the dirt on his face!

ive always wanted to rebuild my tecumseh 6.5hp but parts and performance parts are the only problem but awesome vid boys as always itl be fine

OMG. My back hurts. Lol

Just a thought on the long runner for the carb, the longer running Might actually be helping with low RMP Torque. The Length of intake runners is something considered by car manufactures afterall. There is a video on Engineering Explained about things like that.

Man il be really looking forward to see a tecumseh build. Great vid. Keep up the awesome work

Maybe next time before going out, use your phone to find where you started from. Thanks for the exciting vid. Made my day

I remember when Tecumseh made the best lawnmower motor ever.

Tecumseh pull starts are such a pain, good vid though guys! Y’all are killing the game. I need some power mods on my QT50

the longer your intake runner the more bottom end torque you'll make.. That's why the old school factory Super Stock drag cars had those huge stacks a foot above the hood.

Mud dive was awesome

Tecumseh rototiller has an extended "pto" cam (that you cut back behind the regular case plug) that is steel and a ball bearing output case.

The length on that intake reminds me of a Chrysler cross-ram intake from a 413

I have had a few Tecumseh engines and the only thing I had issues with were the carbs. I had a 4hp flat head, 6hp ohv and 9hp flat head, all had issues with the cars, and it was often. I found that the 6hp greatly benefitted from a different, non 90 degree intake. The 9HP was awesome once it had a mikuni VM on it, it was either a 24 or 26mm from a snowmobile, the 4hp was great until I cooked the rings, I shaved the head, ran a carb from a honda 6.5hp mower and it ran great (Before i killed the rings).

Had the Tecumseh on a mini bike back in the day. They always seem to rev higher

Build up that Tecumseh. One of the problems with the Tecumseh is that funky curved upwards intake manifold. If you guys ever decide to make a custom intake that comes straight back off of the intake port and will accept a VM22, I'll buy one

Funny, I have a manco dingo with what I believe is the original tecumseh 5.5 horse. Swapped it last night for a 5.5 briggs and Straton (probably like 20 years newer) and now the thing rips! Do need better brakes though

That was awesome and sweet that engine is the same as a Lawson engine or Clinton engine same family

Add a custom suspension to this little blue Beast!!! I live in Rhode Island and was diagnosed with cancer last June. Went through a lot this past year. Had my 13th and last infusion Last Tuesday!! Wish I could have made it down there. I really want to next year but need to get some bills paid off first then I’m gna grab an engine, then a frame and hopefully mark it there for next year! Wish they had places like this up here!

Dingos will one day rule the world. P S. There is a guy on eBay that makes headers for Tecumseh engine

Any carb swap on a Tecumseh is a vast improvement!✌🎃

Please build one with a 2 stroke engine and mod it out

this is my favorite video and type of content that's been on this channel in a long time

I just found an old partial tecumseh and a wheelbarrow in my grandpas old garage he left me. I’m trying to learn all I can about making that engine as fast as possible to honor that drag racing madman with a street legal mototrike rat rod

Thanks, guys. That engine is impressive for what were junk engines when new. I had one on a mini bike took it off and put a real old 2 1/2 briggs on it and never looked back.

Only thing that kart needs now is a steering damper! Cheap to do as well. pedal to the metal until your spine gives out :D

John all the way around the track "Eeee, ooooh, ooow, eeee, ooooh oooo, ouch!"