Diff. between V3 & V4 heads?
16 February 2007, 11:20 PM
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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
17 February 2007, 05:01 PM
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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.
17 February 2007, 05:02 PM
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The STI version 3 heads have different cams from the STI version 4.
17 February 2007, 07:13 PM
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That's great, Thanks
21 March 2008, 01:23 PM
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How much power can you get out of a V3/V4 UK spec heads?
Last edited by WRX RCY; 21 March 2008 at 10:19 PM .
21 March 2008, 10:18 PM
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23 March 2008, 07:55 AM
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23 March 2008, 11:12 AM
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400 isn't an issue.............
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16 February 2007, 11:20 PM
Diff. between V3 & V4 heads?
