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Old 11-15-2001, 01:29 PM   #15
Scooby Specialist
Member#: 1911
Join Date: Jul 2000
Location: Seattle, WA, USA
2000 Impreza 2.5RS
Silverthorn Metallic


I believe they changed the pistons. Can someone with detailed knowledge comment?

I am aware of how compression ratio is calculated, but I sepcifically said that THIS head swap on THIS engine shouldn't change the ratio.

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