HEADS COMPARISON (for those with 2.5 shortblock)
08 March 2005, 08:21 AM
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HEADS COMPARISON (for those with 2.5 shortblock)
Although USDM STI heads have higher volume than others Spec C heads ouflow all others due to better design:
JIM
08 March 2005, 11:52 AM
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I have been looking for that info for ages! Thanks Jim
My ported heads have had their combustion chambers tweeked and each chamber currently has a volume of 56cc, only 1cc off the standard EJ257 heads. Although with the gaskets I'm running I worked out that my CR would be 8.6:1
08 March 2005, 12:01 PM
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i dont see any flow information in that list Jim?
08 March 2005, 02:29 PM
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Tim,
08 March 2005, 03:07 PM
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Ahh...runs off to check...
08 March 2005, 03:11 PM
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Damn, can't find the details now
46cc standard wasn't it on Sti 4 and 49 cc on Sti 5, pretty sure Steve got it into the 50s, will have to check with him...
08 March 2005, 06:02 PM
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At least this is what have been told John from local Subaru service (due to better design), may be I am wrong though!
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08 March 2005, 11:52 AM
