Go kart car . It's got an 18 HP Duromax , like having a lawnmower engine in a car .

1975 MG roadster with a Duromax 440 cc 18 HP exp. It's fun!

[@SluSharkND]

Car: $500. Engine: $350. Happy Chris making content on KZbin: Priceless.

[@ChrisfromKeyfarm]

Hahaha, thanks for watching, I always look forward to your comments.

[@user-jx4zn9ix9i]

That's a beautiful price for a Car

[@rickcrabtree7903]

9:57 quiet it down a little​@@user-jx4zn9ix9i

[@vinces8974]

I used to work on those cars back in the mid 80s, by putting that Duramax 440 in you did what British Leyland couldn’t do…. ,you actually made the car reliable ,Lol ,Great video Chris.

[@ChrisfromKeyfarm]

Hahaha, thanks

[@Youhaverights6]

I love this comment.

[@haroldkreye8770]

My MGB broke twice on the same day and had to be towed twice.

[@ChrisfromKeyfarm]

That's a rough day 😕. Thanks for watching.

[@KrustyKlown]

almost the same horsepower, lol

[@deeXswanson]

1000 dollars in and a millions smiles out keep up the good work god bless

[@ChrisfromKeyfarm]

Thank you!!

[@rabbithowls71]

Those low open tops are so fun. You feel like your flying but it’s really going 18mph.😮😂

[@ChrisfromKeyfarm]

This one tops out or rather governs out at 40 and it's a lot of fun

[@skinnywheelz]

He done did it agin!😂🤣 seats aint even fastened down.. 🤣😂 I believe this is my favorite project too! Chris, Your videos are like granny's cooking. It takes a little time for it to finish, but I promise you its worth the wait. It is the experience of following your journey that makes Keyfarm a great place to spend my time. Your positive energy is strong Sir! Take as long as you need to do what you do. The followers are coming. Keep doing what you are doing brother, It's obviously working. Another great video Chris, Thanks for sharing! Skinny

[@ChrisfromKeyfarm]

Thanks, I appreciate it and always look forward to skinny comments

[@johngaudreau7506]

I would love to see you do a cross country with this and document it like the old days. So cool! You need old timey goggles, hat and leather trench. Do it!

[@ChrisfromKeyfarm]

Maybe in a coupla decades when I retire 🤣

[@detroitredneckdetroitredne6674]

Spectacular job Brother thank you for sharing your knowledge and expertise and for taking us on your adventure with the engine swaps

[@ChrisfromKeyfarm]

Thanks, and I appreciate you watching and commenting!

[@marchale656]

Just great man. Your starting a revolution. My welding buddy is going to build one.

[@ChrisfromKeyfarm]

Awesome, thanks for watching.

[@tnnaroot]

I saw many projects like this but this one is amazing. Classic car with single cylinder engine . And runs so well

[@ChrisfromKeyfarm]

This one really does work well, and it fits under the hood, I'm pretty proud of this one and it's my favorite to drive ( I also have a truck, tractor, and golf cart set up similar). Thanks for watching

[@jasonlind6790]

Man you found a good deal! Good back road car And chicks dig convertibles. Can’t wait to see it with a new paint job.

[@Grone13]

Awesome, I've been waiting for someone to do one of these swaps on a light car like this

[@ChrisfromKeyfarm]

Cool, glad you like it, tell someone about it 😁

[@tyman2007]

This is the coolest car I have seen built. Great job.

[@ChrisfromKeyfarm]

Thanks , this one feels the most like a real car and it's a lot of fun to drive.

[@c.mikelongo6628]

Looks good Chris, can't wait for more videos.

[@ChrisfromKeyfarm]

Thanks, it's gonna be cool 😎

[@guysmiley3795]

Awesome Project, I love it! I couldn’t stop smiling while watching! Of course now I want one super bad!

[@ChrisfromKeyfarm]

This thing is awesome to drive I'm really happy with it so far thanks for watching

[@chucklangshaw6485]

Chris this is the baddest one you made yet I like it I Would cruise all around town and that so cool thank you For what you do just need to do more

[@ChrisfromKeyfarm]

Thanks for the kind words and watching 👍

[@vancemacd6315]

I absolutely love these builds. Dang fine work

[@ChrisfromKeyfarm]

Thanks, I appreciate it

[@haileysheets]

She’s a beaut, Clark! 👏🏻👏🏻👏🏻

[@ChrisfromKeyfarm]

LOL

[@tombrenes2411]

Awesome content Love all the hard work

[@ChrisfromKeyfarm]

Thanks, I appreciate you watching

[@underground1976]

Great job buddy! I saw a tractor when I was a kid that had I think a 5 hp.BRIGGS mounted on it.That image had escaped my memory until I saw some of your videos.I enjoy every minute of it!.

[@ChrisfromKeyfarm]

I actually built a tractor very similar to that, it's a Farmall H with a 6.5 predator engine.

[@BruceLyeg]

I wonder if any top end speed would be gained using a torque converter before the gearbox? Or perhaps source out a two speed rear end. It seems to have the torque to be able to handle some steeper gears. Totally awesome project.

[@ChrisfromKeyfarm]

A torque converter could help, but I'm not really a fan of them

[@StephenWilliamson-uy4bi]

Great Idea and Engenering personaly,I would like a two cylinder Kohler in it. Yea I know to much money but it would sound and pull like night and day from the Duramax one lunger

[@ChrisfromKeyfarm]

That would be pretty cool, Thanks for watching.

[@bobgrob4]

that MG is more reliable now then when they were new. My brother had a brand new one. Junk. Got rid of it quickly. I love this one though

[@ChrisfromKeyfarm]

Cool, thanks for watching.

[@JBZofficial812]

OUTSTANDING work! Probably one of the best frames to use, you get a convertible and ur not ruining a car someone wants to spend money fixing 😂😂😂 also a lot more reliable!

[@ChrisfromKeyfarm]

👍😁

[@lorenmeyer5290]

How COOL is that! Sure glad your back! God Bless y'all!

[@ChrisfromKeyfarm]

Thanks

[@dominicgarcia85]

I’m seriously jealous 😢I been looking for a small cheap car like that to go cart I already have a small engine but I couldn’t afford any of the cars I found so far and now I’m not working so my project is on perm hiatus I love that car soo much you did awsome keep up the good work

[@ChrisfromKeyfarm]

I have found several MG's in the $400-$700 range, but then they usually need brakes and tires.

[@agkracing140]

You're having so much fun! I love projects like this.

[@ChrisfromKeyfarm]

Cool, thanks for watching

[@theodoredugranrut8201]

Chris from Key farm we have been concerned about your where abouts. The car is awesome looks like my Austin-Healey sprite(same factory) best of luck. Central California watching

[@ChrisfromKeyfarm]

Cool , I bet you were surprised to see Austin's cousin show up on Keyfarm!

[@willymack5196]

Wow what an awesome video I want one I really do That just looks like it's so much fun and to think that in a honesty it's a lawn mower engine that's making it go. That is just way too cool Chris Thank you so much.

[@ChrisfromKeyfarm]

Thanks for watching, I appreciate it!

[@spacecase0]

Fantastic work !

[@ChrisfromKeyfarm]

Thanks

[@JavaRacingCo]

Crazy how that car moves so swiftly with that motor

[@ChrisfromKeyfarm]

It's pretty cool have you seen the video of it in the snow

[@jimmyfinke6759]

hey Chris, it would be awesome to have a electric start engine or even a motorcycle engine. maybe get it street legal with side pipes on the side. it's hard to find manual trans vehicles. THIS IS SOOOO FREAKING AWESOME!!!!

[@ChrisfromKeyfarm]

It'll have electric start real soon! Thanks for watching

[@randytinney6854]

Great. The big block singles are a good value for such Rat Rods. When you upgrade, put a used ($500) big twin in it of 900-1000cc, for 35-45 hp. 70 mph Freeway driver, 40 mpg?

[@ChrisfromKeyfarm]

I'm trying to keep the engine under the hood

[@chaspruitt2610]

That is a cool build!! Thanks for the video. 👍🏼💜✝️

[@ChrisfromKeyfarm]

Glad you liked it!!

[@kryptonite704]

just found this video and watching you gun it from 1st gear to 4th actually made me laugh lol too funny with the way it sounds in that mg. good stuff man i just subscribed keep em coming.

[@ChrisfromKeyfarm]

Glad you liked it, check out the new monster truck, you'll enjoy it.

[@JamesCouch777]

You could bypass the governor and get a few more mph out of it 😊

[@chronobot2001]

Looks like great fun. Nice job.

[@TimTurner115]

Nice ride sir.

[@ChrisfromKeyfarm]

Thank you!

[@Mr007batman]

Just love it big guy!!!!!

[@ChrisfromKeyfarm]

Thanks

[@emmanuellefontaine6764]

Super ! vous me faites rêver avec cette voiture insolite 😍🥰

[@ChrisfromKeyfarm]

It really is a lot of fun. Thanks for watching

[@DuroMaxPower]

Wow! Chris! Now this is the coolest! Now this is the face of the channel!

[@ChrisfromKeyfarm]

It's so cool! Thanks

[@kellyholmesfloerkey9132]

Wow, that's unbelievable!

[@ChrisfromKeyfarm]

I know!!! Thanks for watching.

[@dominicgarcia85]

I’d put a motorcycle motor if I had it but that’s why you have it I don’t lmao god bless

[@jonathanmiddleton1141]

That ain’t nothin but cool right there!!!!

[@ChrisfromKeyfarm]

It's fun to drive, I'm thinking about making it street legal, ok legalish🤔😅

[@larryhogan3-16]

I just watched this and really enjoyed it... Put duel exhaust coming out of the rear of the M.G. I bet it would sound awesome 👍😎

[@ChrisfromKeyfarm]

That would be cool! Thanks for watching!

[@imtheonevanhalen1557]

First thing, get the 90w gear oil out of the trans and rear....ATF will help A LOT!!

[@ChrisfromKeyfarm]

I put 50 weight in them.

[@jakeeve9372]

I'd love to have that car soooo cool

[@ChrisfromKeyfarm]

Dude , it's awesome. Best part is so far it's only about a $1000 project and that includes new front brakes.

[@squarebodycasewademckenney6190]

Only thing I would do differently is have a full exhaust out the back with a muffler (maybe like a glass pack or something just to lower the harshness of the exhaust and give it more power)

[@ChrisfromKeyfarm]

I have all the hardware and a muffler to make it exhaust underneath but probably not all the way out the back

[@Coppersmithkane]

Well done and fun...

[@ChrisfromKeyfarm]

It sure is fun to drive

[@martinlicht1969]

Nice! You beat the lyrics to "1000 Dollar Car", by the Bottle Rockets!

[@ChrisfromKeyfarm]

Lol I just watched part of the video and there happened to be an MGB GT in the video. Hahaha, thanks for watching.

[@samsonian]

Looks like fun, I wonder what it’d be like with a 1L moto engine from a wrecked streetbike? It’s basically how Honda made their first sports cars.

[@ChrisfromKeyfarm]

I would love to find out, there is one on KZbin and it is awesome.

[@RandyLarson-we6ic]

Soooooo COOL!!!!!

[@ChrisfromKeyfarm]

Thanks , it's a lot of fun , appreciate you watching

[@frankschwartz7405]

What it actually needs is a 3.4 60 degree V6 with a T5. (Camaro). Fits right in, light weight, has plenty of HP Many Brit cars have had the swap.

[@ChrisfromKeyfarm]

That's pretty cool

[@donaldwhitten2438]

I really like the mg miget . Id like to build me a car with a lawn mower engine for fun.

[@ChrisfromKeyfarm]

This video is about the B ,but I have a red midget that I'm building now

[@urbexandbrokenthings4806]

that looks super fun

[@ChrisfromKeyfarm]

It is, thanks for watching and commenting

[@royz2328]

you rock brother

[@ChrisfromKeyfarm]

Thanks

[@diydarkmatter]

lol thats what i was talking about man lol . would have loved to see a predetor 670cc twin in it but i know they cost money and you already had that one lol . but man you ever get one drop it in there even if its just for one video . and keep them tall tires man they make ya go faster . smaller tires will just slow you down .

[@ChrisfromKeyfarm]

Thanks for watching, if I get low profile tires, I can always re-gear the car to whatever it needs, it'll take a couple hours, but not too long.

[@andrew4403]

Make it nice and quiet and that'll be a nice little beater for around town a little grocery getter

[@ChrisfromKeyfarm]

It does have a muffler underneath the car now 😂

[@hackprine5691]

OH how hilarious and fun..... gotta get me a farm and a welder....

[@ChrisfromKeyfarm]

This car is one of my favorites, thanks for watching.

[@kennickel878]

Great to see another robot cantina fan.

[@ChrisfromKeyfarm]

Absolutely, he does some interesting stuff

[@kennickel878]

@@ChrisfromKeyfarm the more of these budget engine swap videos I watch the more convinced I am it's a brilliant idea. There are a ton of derelict tractors and vehicles in my area that look to be in solid shape as far as the frame and body are concerned and could probably be put back into service without breaking the bank.

[@ChrisfromKeyfarm]

Absolutely, most of the time when the engine quits , a vehicle gets parked and everything else is fine

[@YoureGonnaNeedABiggerBoat]

I love it! Barry has diesel exhaust coming out his nose! That's a hardworking man right thar!

[@ChrisfromKeyfarm]

👍

[@acevers]

Awesome! Hillbilly ingenuity.

[@ChrisfromKeyfarm]

👍 you nailed it! That's me!

[@scottreese5492]

Awesome, glad i just found your channel. Can you show a picture of how you conected the trans?

[@ChrisfromKeyfarm]

Check out this video on the truck, it's the same as the car.

[@ChrisfromKeyfarm]

kzbin.info/www/bejne/r4qseKCOrrKMf8U

[@johnsalisbury3768]

This is killer

[@ChrisfromKeyfarm]

It's fun to drive too !

[@robertbodell7221]

You need to register that and drive it around town.

[@ChrisfromKeyfarm]

I'm seriously thinking about it, so much so that I'm in the process of putting a muffler on it.

[@robertbodell7221]

@@ChrisfromKeyfarm Drop by the auto parts store and tell them your is sounding strange LOL. Maybe even put an alternator on it to charge the battery. I'd like to see more people using lawn mower engines in cars as daily grocery getters. I mean like cost of gas tells it all. And then for somebody that needs an engine rebuilt, do you really need to do 60 in 3 seconds? You pretty well got it all explained. I noticed in one video you had a little problem with oil in the clutch. have you considered replacing the clutch with a spring loaded belt tensioner hooked up to the clutch peddle. maybe a way to lock it released for starting by rope start. Just a thought. Keep u8p the good work and ill be watching for the town trip.

[@ChrisfromKeyfarm]

I have thought a lot about a tensioner clutch, just haven't built one yet

[@ChrisfromKeyfarm]

On the newest project, the Monster Truck, I kept the clutch pedal just for that reason.

[@tim75052]

That is coool!

[@ChrisfromKeyfarm]

Thanks

[@jefflilyea4669]

Changing the plugs on a pinto I hooked up one plug wire and it ran

[@ChrisfromKeyfarm]

LOL

[@No1414body]

I'd like to see you put a v-twin predator in it

[@ChrisfromKeyfarm]

It won't fit under the hood, but I do have one that is going in the truck that currently has the 18 HP.

[@jimmyfinke6759]

I LUV IT!!! JUST AWESOME!!!!

[@ChrisfromKeyfarm]

Thanks, it's even more fun to drive than I expected! Thanks for watching

[@squarebodycasewademckenney6190]

I wonder what job this guy has... *truck with Pepsi logo and a Pepsi shirt* lol

[@ChrisfromKeyfarm]

👍🥤

[@monstermonster3814]

I realy love it!!!

[@ChrisfromKeyfarm]

Oh man , it's so much fun to drive

[@glennranger4091]

I would like to see a video of how you hook the motor up to the transmission of the car. I have a good idea of what you’re doing because I hooked up a single cylinder Skidoo engine to run my Volkswagen bug Dune Buggy. But I would like to see how you did it. Thank you

[@ChrisfromKeyfarm]

👍

[@rocket99dan]

Nice! Now add a smog pump supercharger.

[@ChrisfromKeyfarm]

That'd be cool, thanks for watching

[@2bradsemail]

I just love this project. A 10 in my book !

[@ChrisfromKeyfarm]

Everyone who has ridden in it agrees 😁

[@steelcider-9508]

Curious how it does on hills lol. Very cool tho. I want to do this so bad. Would be fun to try and get away with in the mountains in NC

[@ChrisfromKeyfarm]

This one actually does really good on hills my Duramax truck is geared a little high, goes a little faster but not near as good on hills.

[@redbarchetta8782]

Well at least you can tell people there's a 440 in her. 🤣

[@ChrisfromKeyfarm]

👍

[@user-jp8tl1wi7g]

This thing is freaking mad!! I love it!! How did you do the clutch/transmission to engine?? Great job!!

[@ChrisfromKeyfarm]

I center up the eye of the clutch and a 1" steel coupler. That is how you mate the new shaft to the old. I'll be making a video on just that subject soon.

[@ota024]

imagine putting a harley davidson engine on it or maybe that VTwin Duromax (they have a 999cc too).

[@ChrisfromKeyfarm]

There is a guy that put a sport bike engine in one , it's pretty cool

[@winggunsbp]

I got a 95 z28 6 speed with a seized engine and I'm really looking into doing this.

[@ChrisfromKeyfarm]

I hate that cool car has a seized engine, but it would make a nice project.

[@winggunsbp]

Yeah I have a 86 Camaro I put a 454 in. And if I can't do the little engine in this car I have a 366 out of my dump truck I could always drop in it.

[@ChrisfromKeyfarm]

kzbin.info/www/bejne/f6nGln2viNp_aq8

[@lastotallyawesomebleach204]

You gotta get a v-twin into there next!!!

[@ChrisfromKeyfarm]

It's not that much of a game and I'm not sure I could close the hood

[@randytinney6854]

Keeping engine under hood is the better idea.

[@ChrisfromKeyfarm]

Thanks

[@towboatjeff]

A fully built predator vtwin would be amazing in that car and sound awesome.

[@ChrisfromKeyfarm]

Probably can't fit it under the hood ( that was a goal for this one) I do have a stock predator 670 going on my pickup truck

[@skinnywheelz]

@@ChrisfromKeyfarm Can't wait to see that 670 on the truck .

[@towboatjeff]

@@ChrisfromKeyfarm ya could always cut a hole in the hood for it to poke out.

[@ChrisfromKeyfarm]

I did not mind cutting a hole in the hood of the truck, my goodness I even made the hood scoop out of a wheelbarrow ,but the coolest thing about this MG is that long cool hood and I don't want to mess that up.

[@roberthorseman7432]

@@ChrisfromKeyfarm If they could fit a V8 under the bonnet I'm sure you could put the v-twin in there.

[@dannywhite132]

Is there a video on how you hooked it up to the gearbox/clutch etc?

[@ChrisfromKeyfarm]

Yes , a couple of them. Here is the most recent kzbin.info/www/bejne/f6nGln2viNp_aq8

[@jeremiahhoss5726]

Can you post a video on installing the engine in the car I have a MG midget and I plan on doing the same thing to it and I would greatly appreciate. The hopeful video

[@ChrisfromKeyfarm]

I never made a video particularly on the MG because it proved to not be very popular, but this video of my truck shows the process and it's about 90% the same. kzbin.info/www/bejne/r4qseKCOrrKMf8U

[@mikeydizme1]

Straight body too.

[@ChrisfromKeyfarm]

Absolutely, it's pretty cool.

[@user-hr9zy8wd1w]

yea sounds just like a race car

[@ChrisfromKeyfarm]

Lol

[@farfromperfect4643]

How are you engaging the transmission since there is no clutch? This video was abundantly clear you just shoved it in gear, and when you gave it gas it took off. Is there a centrifugal clutch built into the back of the engine or how are you doing this? I'm planning to do something like this with a Bronco or F150 4x4 to tow my gin-pole crane trailer around my property and hatched the idea tonight. Been watching several of your videos like this one and of the Mazda but still stumped! Thanks! I subscribed.

[@ChrisfromKeyfarm]

Yes, there is a centrifugal clutch on the engine. Some of the other videos show it , you can see it best on the tractor videos. Thanks for watching. Of all of these contraptions, the cars performance is the best.

[@Youhaverights6]

Looks like a grocery getter. I could Travel to Fallon on that thing for sure.

[@ChrisfromKeyfarm]

Cool

[@Youhaverights6]

I love it!!

[@ChrisfromKeyfarm]

Thanks

[@user-yh9xi5cy8k]

Cool

[@ChrisfromKeyfarm]

Thanks

[@mikeydizme1]

Love it! Lol

[@ChrisfromKeyfarm]

It's still my favorite project to drive

[@cabaneencac5168]

There are plenty of Smarts with broken engine (here in Canada with the 3 cyl diesel) which can be obtained for cheap. Wonder if I could replace the Manumatic ( kind of hydrolic solenoid who activate the clutch ) by a clutch pedal , so I could use the Smart gearbox driven by a GX clone of 18 hp on top of it ...any Smarts expert here?

[@ChrisfromKeyfarm]

That would be interesting

[@JamesCouch777]

Good idea 👍

[@ChrisfromKeyfarm]

Thanks

[@RadProducer75]

imagine that with the V-TWIN!!!!!!

[@ChrisfromKeyfarm]

Have you seen my pickup truck, I'm putting the predator 670 in it!

[@anthonyrussek9577]

Very awesome I love this set up, what sprocket and clutch set up to get the transmission and do you just weld it on the 1 inch shaft?

[@ChrisfromKeyfarm]

The eye of the clutch disc is welded to the 1" coupler , then the coupler attaches to a 1" shaft. This one has a 14 tooth clutch and I think a 34 tooth sprocket on the 1" shaft

[@ChrisfromKeyfarm]

I just made this video I believe it will answer your questions kzbin.info/www/bejne/f6nGln2viNp_aq8

[@anthonyrussek9577]

@@ChrisfromKeyfarm your awesome man very fun project and just as simple as can be for a cruise to the beach and back. Thank you again.

[@ChrisfromKeyfarm]

👍

[@Keiths1234]

🙏🙏🙏🙂♥️👍. Love it

[@ChrisfromKeyfarm]

It's probably my favorite vehicle project. It's definitely the most fun to drive

[@Keiths1234]

@@ChrisfromKeyfarm I will pray for you to have wisdom for working on it sounds like you will have a good time

[@ChrisfromKeyfarm]

Thanks

[@matthewanderson7766]

You should put a straight pipe all the way back

[@ChrisfromKeyfarm]

That'd be cool

[@towboatjeff]

Ya need to team up with go power sports a d do a build on a 440 engine for the mg.

[@skinnywheelz]

I agree, GPS would be the perfect sponsor for this channel . Just imagine what Keyfarm can do with their inventory. I see a whole series of upgrades to all the old projects. Great Idea!

[@ChrisfromKeyfarm]

They haven't reached out 🤷‍♂️

[@iangreenhalgh9280]

Maybe you can hook the exhaust up to the car's original exhaust so it sounds a bit more refined?

[@ChrisfromKeyfarm]

LOL, it didn't have any exhaust when I got it, I have an exhaust ( tractor muffler)about half built for it

[@lawrencefranck9417]

Should have put a turbo hyabusa in it.

[@ChrisfromKeyfarm]

That would be cool but I don't have a turbo Hayabusa

[@jasperbates6760]

Hello.... Up to 8 hp engines will use a 6:1 gear ratio via a S & S engine drive clutch or 30 series torque convertor on all go karts & mini bikes with a maximum of 400 lbs of vehicle occupant weight, and a gross vehicle weight of 150 lbs for a two seat go kart or mini bike with tires up to a maximum of 13" diameter with a stock Predator 212 CC engine. This combination has a proven speed rating @ 3600 RPM based on the diameter of your tire measured from the slab to the center of your axle multiplied by 2. If you exceed any of these ratings of the vehicle, or the passenger weight, or the maximum 13" wheel diameter. Then a 30 series torque convertor must be used or clutch damage will occur. S & S "Six Spring" Clutch @ 3600 RPM Uses a 1:6 rule. Use 1 Clutch tooth for every 6 Sprocket teeth and a Gross Maximum Vehicle plus Passenger Rating of 550 lbs, and a Maximum of a 13" Tire Diameter.. Tire Diameter Slab to Center of Axle 10 "= 17.850 mph 5 inches 11" = 19.365 mph 5.5 inches 12" = 21.420 mph 6 inches 13" = 23.205 mph 6.5 inches 30 Series Torque Convertor @ 3600 RPM Uses a 1:6 rule. Use 1 Clutch tooth for every 6 Sprocket teeth and a Gross Maximum Vehicle plus Passenger Rating of 550 lbs, and a Maximum of a 13" Tire Diameter. Tire Diameter Slab to Center of Axle 14" = 24,990 mph 7 inches 15" = 26.775 mph 7.5 inches 16" = 28.560mph 8 inches 17" = 30.345 mph 8.5 inches 18" = 32.130 mph 9 inches 19" = 33.915 mph 9.5 inches 20" = 35.700 mph 10 inches 21" = 37.485 mph 10.5 inches 22" = 39.270 mph 11 inches 23" = 41.055 mph 11.5 inches 24" = 42.840 mph 12 inches 25" = 44.625 mph 12.5 inches 26" = 46.410 mph 13 inches 27" = 48.196 mph 13.5 inches 28" = 49.980 mph 14 inches 29" = 51.765 mph 14.5 inches 30" = 53.550 mph 15 inches [ Note ] S & S centrifugal clutches which should typically last 7 years using a 6:1 gear ratio. The diameter of your tire will change the speed of a 6:1 ratio as seen above without changing your gears. www.bmikarts.com/Go-Kart-Gear-Ratio-Speed-Calculator

[@ChrisfromKeyfarm]

That is likely all true, but when you're driving a transmission and then a rear end you have so much gear reduction none of that tire size and sprocket stuff matters.

[@jasperbates6760]

@@ChrisfromKeyfarm Yes, the rear end and transmission are figured simply as a 1:1 ratio when paired with the Predator 212cc and S & S clutch. Which does not change the 6:1 ratio I explained in my last post. However the gross vehicle weight & passenger rating & tire diameter has been passed, Those clutches were only meant to move 550 lbs with the specs given. But, if you watch some of his later videos he added a second 10T clutch and 60T sprocket to a jackshaft connecting the engine to the jackshaft via solid gears with a 1:1 ratio to increase the pull of the clutch to 1100 lbs in the same vehicle that could not make it up a small hill in his back yard. Where he could not do it with only 1 clutch without smoking the clutch. . Additional Clutches....... Standard S & S clutches engage around 2000 RPM and can easily pull 550 lbs with a 6:1 ratio safely without damaging the clutch. Lasting for several years without needing replacement. All time tested and approved. But you can literally burn them up in 20 minutes with an improper gear, weight, and tire diameter ratio. Let's daisy chain the same engine to the jackshaft and transmission using solid gears and a 1:1 gear ratio. Keeping the 6:1 ratio for all the S & S clutches and axle sprockets. With standard 2000 RPM engagement. 1 clutch = 550 lbs 10T clutch 60T sprocket. 2 clutch = 1100 lbs 10T clutch 60T sprocket. 3 clutch = 1650 lbs 10T clutch 60T sprocket. 4 clutch = 2200 lbs 10T clutch 60T sprocket. 5 clutch = 2750 lbs 10T clutch 60T sprocket. 6 clutch = 3300 lbs 10T clutch 60T sprocket. 7 clutch = 3850 lbs. 10T clutch 60T sprocket. As you can see you can really increase the amount of weight these type of clutches can pull by simply adding more of them as well as sprockets to a single jackshaft connected to the transmission. Simply gas and go operation. Standard S & S clutches fully engage at only 2000 RPM. So theoretically you could easily move the weight of a typical highway motor vehicle and passenger rating of a motor vehicle with these type of clutches. If your using multiple clutches. More explained..... The reason you must use a 30 series torque convertor for engines up to 8 hp when you exceed these ratings given for a standard S & S clutch is because a torque convertor has a 18:1 gear ratio from a dead stop that helps get you moving that works up to a 6:1 gear ratio when in top speed with the same engine. The higher gear ratio from the torque convertor allows you to use the larger tire diameters and vehicle weight rating normally used for these type of engines. So the vehicle can take off from a dead stop without tearing things up. Then your tire diameter will only affect your vehicles overall top speed. This is why many opt for a 30 series torque convertor over a standard S & S clutch is the increase in gear ratio that a torque convertor provides from take off. So that they can run the bigger tires & wheels or increased weight on golf karts, mini bikes, go karts, and yes even motor vehicles............... Why? Because off road utility, and golf kart wheels and tires and motor vehicle & motorcycle wheels and tires are D.O.T. approved for Highway use. Whereas typical off road utility, go kart, and mini bike tires and wheels are not D.O.T. rated. .

[@ChrisfromKeyfarm]

Man I don't know what to tell ya, All those numbers sound really good but in the real world I'm moving a 1200 lb car with one clutch at 40 mph with a 2.28:1 ratio. With a 6:1 it would be real slow.

[@jasperbates6760]

@@ChrisfromKeyfarm I am not saying you couldn't do it. What I am saying is what the clutch is actually rated for, and built for by the clutch manufacturer. Which is only 550 lbs gross vehicle weight plus passenger rating. And the S & S clutch should last you for several years. Heck I have seen people like yourself moving cars and pick ups and even full size tractors, same as you with these 7.2 hp 212 cc engines with a single clutch. Let me give you an example.... Everyone knows by just adjusting the carburetor's idle screw and the throttle return screw on the Predator 212 cc engine with the engine opened at full throttle. Adjust these screws until the governor starts to retard the engine. ( watching the governor arm ) At that point turn back in just a 1/8, 1/4 or 1/2 a turn on these screws and the Predator 212 cc rips 5000 RPM straight out of the box. My go karts and mini bikes with 13" tire diameters and 6:1 gear ratio's without a transmission ( please keep this in mind ) are doing exactly 41 MPH. On stock Predator 212 cc engines straight out of the box rather Hemi or Non-Hemi @ 5000 RPM's with an S & S clutch. However they are under 550 lb gross vehicle and passenger weight rating with a 13" tire diameter. Which are in perfect specifications provided by the manufacturer for the S & S clutch. That;s twice the normal speed of 21 miles an hour set at @ 3600 RPM. Just by adjusting a couple of screws while at full throttle. You are using transmissions in all your builds, thus you should be getting a whole lot more speed behind that 7.2 hp engine. Ever seen a 250 cc Motocross motorcycle? They do a lot more than 41 MPH. Try 60-85 MPH due to their transmissions, and they are not doing more than 5000 RPM between any of those gear changes. With a vehicle weight up to 300 lbs for 250-500 cc dirt bikes. Now lets talk modified Predator 212 engines. "Warning" ........This is the minimal modifications that are required but, by no means is what I am providing exhaustive. The Predator 212 cc is capable of reaching as much as 30 HP and 12,000 RPM's. The process requires a complete engine tear down removing the governor gears from the block and crankshaft as well as oil sensor from inside the engine and drilling and tapping these holes with lock tight threaded screws. And requires you purchasing a billet rod, a billet flywheel, and 22 lb valve springs, and complete gasket set for your hemi - or non-hemi Predator engine. Must specify your type of Predator engine before ordering any parts or gasket set to replace the factory parts. Also required are torque wrenches for both foot and inch lbs. A small engine piston ring compressor, a vice, and plastic gauge for checking "oil" rod bearing clearance before for re-installation. And feeler gauges for valve lash adjustment. Spring compressor's for small engines are also nice to have if you have the extra money but, are not required with springs up to 22 lbs. Also an engine top plate should be added between the top of the engine and fuel tank for obvious safety reasons due to the added extremely high RPM's the engine will produce. Additionally if you have a plastic geared camshaft it too should be replaced during the tear down with a race "metal geared camshaft". Your choice of duration and lift rather stock or modified for race application. Adding a race cam now and you will not have to go back inside the engine. Added cost to the new engine is approximately the same as a new engine. Roughly around $360-400 dollars total for a "minimal modified engine" and can go up to $1000 dollars or more depending on the build your shooting for. As I stated this is only the minimal requirements to safely "modify the engine" for unbelievable HP gains over a stock governed 7.2 HP Predator engine. Meaning producing seriously crazy HP on the cheap, Using the existing stock external components such as the stock carburetor, exhaust, and cylinder head but doing it safely, as well as having an engine that will actually handle the higher RPM range and HP it's now capable of producing.......With this minimal rebuild you can easily expect to double the HP from a stock 212 cc's power to 14.5 plus HP over a stock out of box 7.2 HP Predator capable of reaching only 3600 to 5000 maximum RPM. And a full on 30 HP Predator 212 cc race engine is just a quick step up from this minimal modified engine by simply improving the externals of the engine, primarily your cylinder head flow & compression, by adding a better aftermarket air filter & aftermarket intake and carburetor already pre-set or rated for 30 HP engines, adding a set of 1.2 roller rockers and push rods, porting and polishing the entire cylinder head intake and exhaust ports & valve areas, then by shaving the bottom of the cylinder head for a higher engine compression, rework the valve seats and valve angle and set valve lash. ** Check that the spark plug and cylinder head are clearing each other by rotating the assembly by hand before trying to crank and tune the engine if you have increased the compression. Add a spacer to the spark plug if needed for spark plug and piston clearance issues ** Then start and re-tune your engine for the significant increased fuel and air flow you will have added over the stock engine components by doing a "plug chop" after all external mods have been performed to find out rather your running too rich or too lean or that no further adjustments are needed. That would be rare indeed so it's a good idea to have several new spark plugs on hand to properly tune the engine. Any changes or adjustments done to the air, fuel, and exhaust system then a new spark plug and "plug chop" should be performed. Remember it's ok if your slightly rich but, you don't want your engine too lean. Love these up to 8 HP go kart sized engines.......