What compression ratio?

[rookieupgrade1]

I am looking at some Wiseco pistons with an 8.3:1 compression ratio.

Is this too much for a turbo car if I put a better head gasket on and or other parts.

Thoughts and ideas?

 

[candela]

no

 

[DSMSpyder99]

i would go slighty higher maybe a 9.5 or 9.7

 

[doug]

Stock 2G turbo compression is 8.5:1 so 8.3 is even less than that. I'd maybe even go 9:1, but 9.5 or 9.7 is a little high IMO for a turbo car. You'll have less room for error in tuning.

 

[NOSNUSE]

I will have to agree that the 8.3 ratio is fine the EVO motors run 8.8 with 19psi so you should have no problems there just keep it a little on the rich side to avoid knock.

 

[rookieupgrade1]

Thanks for the input....... I couldn't find a part # for anything hight than 8.3:1 ratio. If anyone has a Weisco part # for anything higher let me know.

I am building a 93 Talon TSI AWD from a shell and 6 boxes of parts so I am takeing the oppertunity to build it up right.

 

[doug]

DSMTuners member WhipmastaFlex just built his motor with Wiseco pistons at like 8.8 or 9:1. If you want to PM him, I'm sure he'd help you out-- he's a nice guy.

 

[Groomz]

New Evo 8s are 8.8:1 compression. Between 8 and 9 its your preference. I plan to run 17:1 and blow the head off the block.

 

[DSMSpyder99]

Originally posted by doug
Stock 2G turbo compression is 8.5:1 so 8.3 is even less than that. I'd maybe even go 9:1, but 9.5 or 9.7 is a little high IMO for a turbo car. You'll have less room for error in tuning.

my bad i meant to say 8.5 or 8.7 but i would personlly stay at 9.0:1