What is my next option, I've got a Kitaco 88cc kit, carb, head, front & rear spockets & a pipe but i want more. What is the next step for more power......A bigger motor is not out of the question I just need to smoke the competition.
I did just that to my 88 kit, opened up the head, put in a 50mm tak stroker crank and a kitaco inner rotor.. it was like a whole new bike.. I'm going to install a 54mm piston and jug next.. the nice thing about the 50mm crank is that it seemed to spin up a bit faster than the 54mm.. i did try both, the 50mm just felt better on my local track... but i can honestly say it was worth the money.... you might ask around and see if someone had a china copy of the tak crank.. i thought i saw one on dratv's site for around 200.. but i might be wrong...
It's a balance issue, and by lightening the weight on one side of the crank will cause the crank bearings to wear out faster with a clutch on the crank. The stock cranks don't have his issue, but the offset pin location on the stroker causes this problem to show up much faster. Leads to excessive vibration and could cause engine failure.
Also, with the clutch on the crankshaft, don't go over 12K rpm or you could cause the clutch to tear itself to pieces.
You can run an inner rotor with a stroker, but you will also need a clutch off the crankshaft to balance out the motor.