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Old 14 April 2006, 11:31 AM
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banny sti
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How much difference is there between sti v3 and v4 heads?

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banny
Old 14 April 2006, 12:57 PM
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banny sti
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I have been offered a complete sti 4 engine and would like to know the difference between the heads, and how much affect it will have on performance as the car was mapped on a power fc with v3 engine.
Old 14 April 2006, 01:41 PM
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powercrazed
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I thought the heads were the same but the V3 had a slightly wilder cam profile.

Nathan
Old 14 April 2006, 01:44 PM
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banny sti
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Cheers Nathan, really interested to know how much difference there is in the cam profile.
Old 16 April 2006, 04:38 PM
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Old 16 April 2006, 08:13 PM
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Jolly Green Monster
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Agree with Nathan.. cams are slightly wilder.. is you old engine not STi3?

Remove and compare and run the best set

Simon
Old 16 April 2006, 08:23 PM
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banny sti
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Simon will you be okay to fit the injectors and fpr during the remap?
Old 18 April 2006, 09:40 AM
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Originally Posted by banny sti
Simon will you be okay to fit the injectors and fpr during the remap?
yeah shouldn't be a problem.

Your fuel pressure reg is held on with the hex head screws so comes undone reasonably easy..

Simon
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