Thread: Thinking of converting to E85.. Yes or Ne??

Originally Posted by tms8582

I've read that general rule of thumb is stock chain for rockers and 90 lb. springs, single roller for mild cam and 105 springs, double roller for big cam and 130 springs. Its the springs that stress the chain but im sure you will be fine with your set up for a while.

Some say a stock chain is better than a single roller. Also, 90 springs are harder on the chain than 105s because of the ramp rate. I'm thinking I'll be just dandy. But then again, ya never know... Danomite just snapped his single roller yesterday..

Originally Posted by tms8582

I've never heard that a stock chain is stronger than a roller chain and have a hard time believing that 90 lb springs are harder on a timing chain than 105's but I've also never scene any actual evidence to say either way. Rollmaster claims otherwise however... Good luck with your e85 conversion

I could be mistaken, but I always read that 90's were harder on the chain/dampener than 105's due to the ramp rate.