Looking at building a "limited mod" kart to run at Tulare in CA. The only engine rule is " max 212cc engine, must maintain stock stroke". I see a mix of billet block OHV motors, 125 2 strokes, open KT's. Just curious, if money wasn't an option, what would be killer build that's legal? track is 1/8-1/10 with weight at 400lbs.
largest/most powerful engine with 212cc or less?
- Thread starter Hobby87
- Start date
Chris Cooper
Member
On that short of a track - it’s all about getting torque and using it.
My thoughts - Two cycle of some sort. And don’t over do it. We’ve run 131’s on short tracks and have blown the tires away - fully knowing that we had way more HP than any one else there.
Look at a good Reed or PP with a jackshaft and low end / grunt pipe - make sure your kart can handle the torque without spinning the tires and you’ll be fine
My thoughts - Two cycle of some sort. And don’t over do it. We’ve run 131’s on short tracks and have blown the tires away - fully knowing that we had way more HP than any one else there.
Look at a good Reed or PP with a jackshaft and low end / grunt pipe - make sure your kart can handle the torque without spinning the tires and you’ll be fine
that flathead wont run with a ohv
Another option is the Daytona “Dry Sump” 4 valve OHC four stroke. The one for single gear application.
https://daytona-global.com/engine/products/complete-engine-190cc-15/
What I like about higher revving engines is that each impulse is smaller, so you have more granular control over the power application vs the bang bang bang of lower RPM engines.
https://daytona-global.com/engine/products/complete-engine-190cc-15/
What I like about higher revving engines is that each impulse is smaller, so you have more granular control over the power application vs the bang bang bang of lower RPM engines.
spincycle
Member
I ran a stock configuration 125 sudam with a single alky carb on it for a season, all on small tight tracks, just about the most hp I could effectively drive, think it was around 40hp with a Buller kb06 pipe, could burn the tires off it, but if your able to ease into the throttle coming off it was a great ride to say the least...
"J'-remy
Member
would never say that. with the right driver hooked up it can be done. + on a daily basis limited Animals and flatheads do better lap times than some on 450 hondas. I've also seen clones do better lap times than the limiteds. tires can embarrass a motor, seen plenty of legal motors in the tech barn with red faced 2nd place finishers
Colt sr
Member
We aren't bench racing here. But a limited modified flatty will keep up and potentially win on that small of a track. With the correct driver, shoes, and gearing anyone could win. Just because it lacks a little hp from the ohv engines doesn't mean it won't be competitive.
That is to much hp. My stock BRC 150cc has to much power on small tracks. The guy with the most hp doesnt always win. It's all about corner speed.
rainman
Member
Well not where you race. What engine has track record at Ashway if you don't mind telling me? Certainlly not a "stock" class/ At a smaller track it might happen if you don't facew top drivers, but if you compare the top drivers at a stock class and the UAS drivers at any given track where top UAS drivers have been they have hit track record. It is true though that tires and setup are more important, That's why sometimes I can be faster on my small 100cc engine ( power on low 30s using alky) than on my 131 stroker Sudam at around 50hp, but with the right setup that shouldn't happen. Comparing a top driver with a non top driver doesn't mean the kart is potentially faster.
