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#1
10-07-2002, 10:24 AM
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Question
I've seen a few piston sets for cavaliers and the come in all different compression ratios. I think that the higher compression ones give you more horsepower? but im not really sure. Will an engine wioth 11:1 compression have more horsepower than one with 9:1 compression. Also I have heard you cant run 11:1 compression with a super or turbo charger is this true? What is the best course of action for incresing my hp low or high compression.
xxdcmast 
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#2
10-08-2002, 04:18 AM
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blowing up your motor
Yea you can run 11:1 with a SC or turbo but your motor will die soon after. What kind of car do you have? I have the 2.4. it currently has a 9:5 compression ratio. 9:5 is not too high if your gonna run low boost, but you should build your engine to suit your application. If you are gonna put a turbo in it and are planning on running high boost levels then you wanna lower the compression. I suggest you get block sleeves if your gonna run high boost. I myself am planning on getting a SC and i plan on running high boost, but the boost i will get out the super charger will not be too much too have to lower the compression. If you own a cavy your best bet is to get the GM super charger. unless you wanna build a one time down the track motor then you can throw in 13:1 and 20psi lol and sure it will be real fuckin fast but not for long.
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#3
10-08-2002, 08:37 AM
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I have a 2000 2.2 liter I was thinking of goin up to either the 2.2 ecotec or the 2.4. Im probly gonna stay mostly with NA and was thinking of maybe 11.5:1 compression higher if possible. I just wanted to know if I could throw a low boost turbo or supercharger on the engine without blowing it up maybe 4-6 lb. I just wanna know what the limits are before i see a piston come flying through my hood.
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#4
10-08-2002, 10:24 AM
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If you went with an 11:1 compression ratio wouldn't you have to use some sort of high octane additive to your gas?
__________________
'01 S-10 Xtreme - Supercharged 4.3L V6, 10 psi. '88 Firebird Trans Am GTA - 5.7L V8, 4spd auto. '06 GTO Brazen Orange Metallic - 6.0L V8, 6spd (the new toy/daily driver)
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#5
10-08-2002, 09:09 PM
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Re: .
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