I was thinking of this last night and decided to ask for anyone who may know.

I know many of the FI people on this board are prolly running a kit on their stock CR and pistons. IE a stock GSR w/ a Drag kit at what ? 10.0:1 CR ? How does your setup run ? Quick spooling ? good top end ?

I really wanted to know this... assuming a hypothetical car (maybe someone on the board has this) with forged rods and pistons running a 10 or 10.5:1 CR with a small turbo kit and an EMS (Hondata,AEM,DFI....), tuned properly.

Would this car be running very well ? What would the downsides be ? We all know lower CR is better for boost, but properly tuned, would a higher compression motor on boost yield great results ? N/A acceleration off the line and in lower rpms and the benefit of boost as the compressor spools ?

Also, I would assume that you wouldn't need to run that high of a boost level to acheive the same power output as on the same motor with an 8 or 9.0:1 CR. If this is so... what would the downsides be? IE: Running 6 psi (high comp) instead of 10psi on a lower CR motor. Would this setup be less or more stress on the motor, being as there would be less boost pressure.
How easy would it be to control detonation ? Would it be adviseable on 92 octane ?


[Modified by X2BOARD, 10:55 AM 4/18/2002]

 

Check out the thread that i replied too. https://honda-tech.com/zerothread?id=163204.

 

Pretty long post on this topic... can't believe I missed it... thanks for the link tho.

What I don't understand is that everytime a question about boost, the majority of posts you see are: Yeah, but you can't run 20 psi on it ! I mean, why is it always assumed that you want to run crazy boost on the street ? What happened to running 8 psi all day and at the track ? That's really what my question was relating to, I guess I should have stated that.
I am more concerned with a high compression, boosted motor, dialy driven with a nice, fat power band. Not a 10.0:1 beast boosting 300psi... know what I mean ?