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Old 10-07-2007, 12:17 PM   #1
DJIMPREZA
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Member#: 1199
Join Date: Apr 2000
Location: Caracas, Venezuela
Vehicle:
1994 Supra+1K, 22b
alike, 07STI

Default What`s the CR from sti 07 USDM heads and CP drop in pistons?

As the title says

It is said that it will raise the CR, what would it be then? have anyone already calculate it?

Stock sti 07 motor with cp drop in pistons

Thanks

DJ
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Old 10-09-2007, 08:24 PM   #2
jaxscuby
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2002 USDM WRX
WRB

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nope..they are suppose to be the same..
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Old 10-09-2007, 10:56 PM   #3
DJIMPREZA
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Default

the same? it can`t be as the sti 07 heads has smaller combustion chamber...

If anyone has the number please post it

Thanks
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Old 10-10-2007, 12:08 AM   #4
Homemade WRX
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search FIRST, then PM!!!

Default

yeah, I had heard that the 07 heads had smaller combustion chamber too...I have yet to be able to cc a set of them though
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Old 10-10-2007, 12:14 PM   #5
Devan M
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Give Crawford a call, they have cc'd all the Subaru heads
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Old 10-10-2007, 12:58 PM   #6
TAPOUT
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I thought the 07's were 9.1:1. Please chime in if you have professional experience.
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