Stock pistons? Without changing the bottom end, how high can you get your compression with heads/cam/gaskets?

Want to take advantage of an E85 setup next year

 

14:1?

If you get a head with a small enough chamber, anything is possible.

 

Without ruining quench and getting a real nice DCR I think it would be a great setup for E85's high octane. I didn't think you could get much higher than 12:1 SCR with a 59cc head without changing pistons?

What kind of numbers could you get away with on a 105 octane fuel anyway?

 

Bump.

 

Answer is in here: https://ls1tech.com/forums/generation-iv-internal-engine/599321-there-47cc-heads-other-ways-get-close-12-1-cr-5-3-a.html

Wich means the 14:1 is for 325 CI engine. Hm..... that's close to diesel setups. All alluminum diesel engines are unknown to me. Makes me kind of worry.

 

Didn't really answer my question, i'm wondering what kind of SCR and DCR I could run on E85?