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Quick DOHC head comparison

Posted: Fri Nov 28, 2008 2:13 am
by PhyrraM
Legacy EJ20G, ~ 2 1/4 x 1 5/16
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Impreza EJ20G, ~ 2 1/4 x 1 5/16
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EJ25D, '98 2.5RS, ~ 2 3/16 x 1 1/4
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Notice the socket clearly does not fit in the EJ25D head.

Posted: Sat Nov 29, 2008 8:07 am
by dscoobydoo
what about ej20k heads?

Posted: Sat Nov 29, 2008 9:22 am
by PhyrraM
dscoobydoo wrote:what about ej20k heads?
Don't have a set to measure. Supposedly they are the same basic casting as the EJ25D heads, but with larger ports. There is a good thread on Nasioc, butI figured I'd throw these up here because these are the commonly discussed heads on LC.

Posted: Sat Nov 29, 2008 2:05 pm
by kimokalihi
Which car is an EJ20K from and which one is the EJ20H from? I have a twin turbo 95 motor, which version is that?

Posted: Sat Nov 29, 2008 6:51 pm
by PhyrraM
EJ20K is V3 and V4 WRX/STI.

EJ20H is Early twin Turbo Legacy. I *think* EJ20H is very close to EJ20G WRX heads.

Posted: Sun Nov 30, 2008 1:03 am
by kimokalihi
Alright so I have an EJ20H motor and I also have a spare set of EJ20G or EJ20K heads.

Posted: Sun Nov 30, 2008 2:23 am
by jake15
kimokalihi wrote:Alright so I have an EJ20H motor and I also have a spare set of EJ20G or EJ20K heads.
the heads that came with your car are ej20g heads :-)

Posted: Sun Nov 30, 2008 3:42 am
by kimokalihi
Thanks jake. I guess you didn't notice but I sent you 2 pms about which heads they were and the differences between the heads but never got a response. That was a while ago.

Posted: Sun Nov 30, 2008 3:42 am
by kimokalihi
So, which heads should I use? The EJ20G or the EJ20H?