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Old 11-15-2001, 09:53 AM   #12
Richard L.
Scooby Specialist
 
Member#: 8465
Join Date: Jul 2001
Chapter/Region: NWIC
Location: Puget Sound, WA
Vehicle:
'00 2.5RS Coupe, AW
'93 GMC Typhoon AWD

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Quote:
Originally posted by bsquare
Changing the heads on the EJ25 doesn't change the compression ratio. You'll still be at 9.7:1.
Actually, changing the heads could change the compression ratio. Compression ratio is a function of cylinder bore, stroke length, cylinder head volume, deck height, head gasket thickness.

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Richard
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