Did a little practice video after last months Mnrc Rd. 6. The track grooved up awesome but didnt wear tires. Ran M4 Lockdowns and ran them 1/2 hr in the B and 1/2 hour in the A.
For an engine I was trying to tame down the R8 for my needs. I inserted the crank, opened up crank timing and raised the sleeve a bit. I love this powerband and outran pretty much everything down the straight. Sorry the vid isnt the best, my nephew doesnt have much experience filming.
Rex
https://www.youtube.com/watch?v=9Nzc2rK-nV4