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WRX/STI heads cc

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Old 11 July 2007, 03:30 PM
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Austrian Impreza
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Default WRX/STI heads cc

Does anybody know what cc difference is between the WRX MY99/00 heads and the STI V5/6 heads?
Are they both the same cc?
Does the cc change due to camshafts of the STI?
Please let me know every advice you can give!
Many thanks in advance!
Old 11 July 2007, 04:32 PM
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SSCJAY
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The Head castings are the same so yes the dish cc are the same.
Old 11 July 2007, 04:37 PM
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The head casings are the same and the head cc should be 49cc, you can also measure this yourself to confirm. The cams have no bearing to head cc as this is measured by the dish on the head.
Old 12 July 2007, 10:08 AM
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Austrian Impreza
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Great many thanks for your answers, seems they make no difference in compression overall, perfect!
Old 12 July 2007, 07:14 PM
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How is it coming along ?
Old 13 July 2007, 02:04 PM
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It will take some more time until I can tell about the results of the build!
Old 20 April 2008, 10:41 AM
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silent running
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Do the CCs vary between years?
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