question: Low CR vs. High CR for forced induction?

[Mr DOHC]

just makes thet torque figure even more impressive

[feral4mr2]

i'm one that likes high c/r and boost, that said i cant wait to get my set of arias lower comp pistons.

[kingmick]

i'm one that likes high c/r and boost, that said i cant wait to get my set of arias lower comp pistons.

do yourself a favour feral and get the ACL's instead of the Arias pistons.

[nick.parker]

Please elaborate KingMick. What are your reasons?

[kingmick]

Simple, they are a far better piston. Arias are the bottom of the barrel in forged pistons.

[feral4mr2]

thanks for the tip mick, i have looked at ACL before, forgot all about them. i should be able to get them through a national parts distributor down here.

[nick.parker]

Hi KingMick,
I dont want to try and piss you off. But you still haven't answered why they are a better piston. Do you have experience with both?
Cheers, Nick

[reecegze]

So guys see if you can clarify this, if i slapped in forged acl pistons with higher comp ratio then say 8.0. 1 My 4agze will pull more power alot better. Thing is i dont want to turbo it just leave it supercharged with (11psi) and alot more higer compression. If the 4age smallports can handle 10psi of turbo boost with extremely high compression ratio why couldnt my 4agze with 9.0. 1 + compression

[kingmick]

Hi KingMick,
I dont want to try and piss you off. But you still haven't answered why they are a better piston . Do you have experience with both?
Cheers, Nick

yes experience with both and talk to most people in australia that import and sell pistons and get to see what happens to the unhappy people. etc etc etc.

Hahaha and you wouldnt piss me off at all with a good question

[kingmick]

So guys see if you can clarify this, if i slapped in forged acl pistons with higher comp ratio then say 8.0. 1 My 4agze will pull more power alot better. Thing is i dont want to turbo it just leave it supercharged with (11psi) and alot more higer compression. If the 4age smallports can handle 10psi of turbo boost with extremely high compression ratio why couldnt my 4agze with 9.0. 1 + compression

no problem as long as the air fuel ratio's are fine threw the range.

[reecegze]

Yeh mick i can get that fixed , get a retune on ecu .. if this is the way to go might aswell get some cams in there to and get them tuned.. any suggestions mick ? mid to to end range etc for my 4agze

[kingmick]

you have after market ecu?

[30psi 4agte]

ACL pistons are actually made by another company and their name is machined off . I think CP make them from memory.

[kingmick]

Mahle, and they have done for many years

[30psi 4agte]

Mahle, and they have done for many years

ahh cheers m8 i knew someone else built them but couldnt quite remember who.

They are still an excellent piston regaurdless