What is my compression ratio with .020 overbore Wiseco pistons in a Ej22 block with EJ20G heads?
The heads came off a 1989 JDM Legacy. I'm pretty sure they are the ones with the 57 CC combustion chambers.
This chart:
http://www.nolimitmotorsport.com/wiseco ... ubaru.html
Says the piston dish is -20CC and I also saw that on the box when I installed them. It says that I get 8.5:1 compression with a 46 CC head. If you add 10 CC to that what does the compression ratio come to?
Ej22 /w Ej20G heads and Wiseco pistons - compression ratio?
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please be carefull!! i gave one to a friend and i guess that was all he ate and he almost did the chicken
'92 TW "Hana" ej20tt obd1 <too many to list< sold 
bought back 
'82 BRAT ej22t stroker 2.34L td05 megasquirt smart coils awic walbro255 xt6 f/w 5sp lsd 3" Tanabe t/b
*womans '04 WRX* scoopless/wingless aspen white.. AWIC
bought back '82 BRAT ej22t stroker 2.34L td05 megasquirt smart coils awic walbro255 xt6 f/w 5sp lsd 3" Tanabe t/b
*womans '04 WRX* scoopless/wingless aspen white.. AWIC
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AWD_addict
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