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Old 02-09-2009, 06:15 PM   #1
Scooby Specialist
Member#: 180640
Join Date: May 2008
Chapter/Region: E. Canada
Location: Montreal, Canada
2000 Drag RSTi
8.96 @ 163

Default Head gasket selection (EJ257 + Ej251 heads)

well, the motor is coming together nicely.
I have my CP pistons, eagle rods, and ACL bearings all installed.

Here is where I cannot get a straight answer from anyone.
What Headgasket should I be running?
I have a EJ257 bottom end and Ej251 heads. A MUT i know..

The heads are built with TWE Dual springs, retainers, Delta cams and SS valves.

What are my different options?

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Old 02-10-2009, 12:31 AM   #2
FuJi K
Scooby Guru
Member#: 3687
Join Date: Jan 2001
Chapter/Region: MWSOC
Location: St. Paul, MN
MY99 GF4 JDM 6spd
NF Performance


OEM STi EJ257 HG's for 2.5L bores
OEM '97-'98 EJ22E HG's for 2.2L bores
OEM WRX EJ205 HG's for 2.0L bores

...but that's just me. All these are 3-layer HG's.
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Old 02-10-2009, 02:41 PM   #3
Scooby Specialist
Member#: 118239
Join Date: Jun 2006
Chapter/Region: SCIC
Location: Beijing and Venice Beach
2002 Built Wagon
Wife- 2004 Outback SE


I'd look at the thicker cometics (.051 or .060) if you are going to run 20+ psi.
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