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cant find flat tops 


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Posted: Sun Mar 20, 2005 8:03 pm 
Smokin em up

Posts: 227

Joined: 11th Dec 2004

Location: Gold Coast
QLD, Australia

Ea's have a giant swirl vane cast into the head which will increase compression on a 4.0. I have been told if you remove the swirl vane it will lower the compression on a 4.0 to about 8.3:1 making it good for boost . Also I know of two people who have machine the tops of the ACL RACE pistons and used them for boost, one for 270rwhp at 12psi and the other for apparently 400rwhp.

Virtually the ACL RACE kits raise the compression slightly without any milling or decking.
Posted: Sun Mar 20, 2005 10:36 pm 
Tyre Shredder

Age: 30

Posts: 391

Joined: 9th Feb 2005

Ride: EB falcon 5spd

Location: adelaide
SA, Australia

well i wasnt really worring about raising my compression, its just that im building a new engine, including new pistons, so i thought while im at it i may as well throw in some flat tops, so condidering that is it realy worth me spending the money on the acl kit or what? what pistons should i get?



1993 EBII GLI, IT'S PERFORMANCE Stage 3 engine,
XH Snorkel, K+N panel, Pacie 4480, High flow cat,
2.5" Lukey cat back system. Monroe GT Gas shocks + struts.

just dyno'd at 140.9RWKW

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