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Old 10-18-2008, 07:47 PM   #1
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im running 9.6 compression stock internals. Ive got 11 lbs of supercharged boost. Im rebuilding another motor to put in my car. Im looking to put JE Flattop pistons with an 85mm + .007 bore, compression 10.8:1. Is this too much compression with 11 lbs of boost. If so I can JE Forged Dish with an 85 mm + .007 bore, compression 9.0:1.

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Old 10-19-2008, 06:52 AM   #2
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I wouldnt go quite that high... I ran 10.2 with 19psi for over 2 years.
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Old 10-19-2008, 10:23 AM   #3
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If you lower the 9.6 compression to 9 you will loose HP with the SC , I wouldnt go to 10.8. You need to shoot for about 9.5

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