06-04-2009, 02:33 AM
whats the highest compression i could run on pump gas?
i know k20 (civic si and rsx-s) have a 11:1 compression and can run on 91+
06-04-2009, 02:55 AM
i have a spare svt engine that has a cracked piston, and its already out of the car. what else am i going to do?
06-04-2009, 03:05 AM
i guess that makes things easier...it just seems to take alot of dough to get any kind of power
06-04-2009, 03:07 AM
yeah but FI is like 3 grand for a sc, and 6k for a good turbo setup.
i can build a high compression enginefor 1k.
06-04-2009, 07:12 AM
I'm wanting to say between 10.5:1 to 11.0:1 would be safe on 93. But i have heard of people going higher. If you know your chamber sizes and what not. This site will help you to figure your CR. http://www.bgsoflex.com/cr.html
06-04-2009, 01:35 PM
I live in a elevation of over 5000 feet, so running 91 octane is like running 93 octane @ low elevation. I would say 11:1 would be the max to run on 91/93. The SVTF is a interference engine with a factory compression of 10.1:1, so getting to 11:1 is going to be tricky especially with VCT. Tom would have the best advice on high compression pistons for the SVT.
06-04-2009, 04:11 PM
definately get into contact with tom on that one. 11:1 would probably bet the safest for you.
06-04-2009, 04:13 PM
a;ready been in contact with him, he doesnt think i should go anything over stock compression, or he wont tune anything over stock compression, something like that
06-04-2009, 04:24 PM
sounds like tom to me lol. i guess you have your answer!
06-04-2009, 04:25 PM
i think i might just save and get a crazy suspension instead :p