Diff. between V3 & V4 heads?

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Feb 16, 2007 | 11:20 PM

WRX RCY

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Diff. between V3 & V4 heads?

I have the oppurtunity to purchase a pair of 98 heads. But how can I tell the differents between them?

Any mark, number, etc. The easier the better

Chris

Feb 17, 2007 | 05:01 PM

merlin24

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From: RM Performance

V3/4 cyl. heads are the same.
Head codes should be LHB + RHB.
UK spec will have Outer Shim.
STi will be Inner Shim.
Uk spec valves are IDN,EDN.
STi are EH,IH
UK spec valve springs are Orange 48.2mm.
STi valve springs are White 56mm.

Feb 17, 2007 | 05:02 PM

banny sti

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From: Type R

The STI version 3 heads have different cams from the STI version 4.

Banny

Feb 17, 2007 | 07:13 PM

WRX RCY

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That's great, Thanks

Mar 21, 2008 | 01:23 PM

WRX RCY

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How much power can you get out of a V3/V4 UK spec heads?

Last edited by WRX RCY; Mar 21, 2008 at 10:19 PM.

Mar 21, 2008 | 10:18 PM

WRX RCY

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anyone?

Mar 23, 2008 | 07:55 AM

WRX RCY

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some1 must know

Diff. between V3 & V4 heads?

Diff. between V3 & V4 heads?

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