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07-06-2004, 09:02 PM | #1 |
Scooby Newbie
Member#: 48990
Join Date: Nov 2003
Location: Sweetwater Tennessee
Vehicle:98 Impreza RS RBP |
EJ257 build
ok, i was wondering if anyone here would know what the compression would be with a EJ257 and 98 DOHC heads. I am needing to know this, so i can decide whether i need to get new pistons or not. I am going to try and get as close as i can to 9:1 CR when i finally put that shortblock in my car. Well, i hope someone knows.. or knows how to calculate it. thanks for the help!
-Thomas
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07-06-2004, 09:12 PM | #2 |
Scooby Specialist
Member#: 2279
Join Date: Sep 2000
Chapter/Region:
South East
Location: The MIA
Vehicle:2000 Slingshot Pastelito Racing |
Use this - http://wac.addr.com/auto/obs/turbo/ejcalcs.html
And this spreadsheet (Sent to me by TWE) - http://users.adelphia.net/~wedge138/...ompression.xls |
07-06-2004, 10:57 PM | #3 |
Scooby Newbie
Member#: 48990
Join Date: Nov 2003
Location: Sweetwater Tennessee
Vehicle:98 Impreza RS RBP |
umm.. thanks for the info wedge. Does anyone know the cylinder head displacement of the 04 STI? im wanting to compare it to a 98 RS.
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