Got any dirt kart/mini-bike racers here?

[Flat Range]

1000% not hunting related, but I am in a dad's only Go Kart Racing Club. I know, I know, sounds lame, but it's actually quiet fun.

To my question. I'm currently running a stock Predator 212cc engine. With this engine, my kart burls a lot in the lower range (especially from a stop). I plan on dropping in a new Tillotson 212 stage 3, but know I will exacerbate the issue with an engine that allows more HP and RPM's.

So, I am thinking I will need to adjust gearing. Axle sprocket seems simple in the fact that a larger sprocket equals torque, and a smaller sprocket equals top end speed. So finding the perfect balance seems ideal.

Any dirt racers have any experience with what they found to be a perfect balance? Before I start buying and trying? Or any other tips?

 

[loganwayne]

Not go carts but we all built mini bikes with 212s in them. If your allowed to run a torque converter do it with what you got and then see what you need to upgrade.
Id upgrade your stock 212 before dumping it and buying a new motor as well. Take the governor out, remove air box and put a big filter on it, straight pipe and re-jet. Run it till you blow it up. (You probably wont).

We built a mini bike with a side car for a beer cooler and a passenger. With a full cooler two grown ass men it would pick the front tire up if you twisted to full throttle sitting. And we got it up to about 35 before I was to scared to keep going

 

[Flat Range]

Not go carts but we all built mini bikes with 212s in them. If your allowed to run a torque converter do it with what you got and then see what you need to upgrade.
Id upgrade your stock 212 before dumping it and buying a new motor as well. Take the governor out, remove air box and put a big filter on it, straight pipe and re-jet. Run it till you blow it up. (You probably wont).

We built a mini bike with a side car for a beer cooler and a passenger. With a full cooler two grown ass men it would pick the front tire up if you twisted to full throttle sitting. And we got it up to about 35 before I was to scared to keep going

I run a torque converter now. 60 tooth sprocket with a 10 tooth clutch. Governor has been removed. Airbox is stock.