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Compression on my turbocharged 99 Camaro SS

This is a discussion on Compression on my turbocharged 99 Camaro SS within the Forced Induction forums, part of the LSx Technical Help Section category; What should my compression be in each cylinder be if my car has a STS turbo on it? can someone ...

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    Member mglangley21's Avatar
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    Smile Compression on my turbocharged 99 Camaro SS

    What should my compression be in each cylinder be if my car has a STS turbo on it? can someone help me , thanks

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    Member mglangley21's Avatar
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    # 7 says 90 psi and the rest say 120psi.. is that good

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    Team Skeet Captain JHayesLS1's Avatar
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    Quote Originally Posted by mglangley21 View Post
    # 7 says 90 psi and the rest say 120psi.. is that good
    You buy a jet engine? jk jk

    I thought someone else did this before, ill search for ya

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    Member Ryanater's Avatar
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    1998 WS6, 1969 Camaro

    Quote Originally Posted by mglangley21 View Post
    # 7 says 90 psi and the rest say 120psi.. is that good
    120??? wow, that is alot! I currently work at a machine shop which rebuilds engines. And every time an LS1 comes in it it because they have lost compression in 1 cylinder. And every time it is because Of a leaky intake valve.

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    Junior Member imma_stocker's Avatar
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    silver with dents
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    my factory turbo'd car has 150 on all four. Have you called STS yet?

    I know, I'm researching the trade in.

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    Quote Originally Posted by Ryanater View Post
    120??? wow, that is alot! I currently work at a machine shop which rebuilds engines. And every time an LS1 comes in it it because they have lost compression in 1 cylinder. And every time it is because Of a leaky intake valve.
    I pulled two bent intake valves out of my car. I didn't realize how common this was with our cars.

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    Nitrous Tuner LS2Tuner's Avatar
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    Quote Originally Posted by mglangley21 View Post
    # 7 says 90 psi and the rest say 120psi.. is that good
    NO THATS NOT GOOD!!! Thats a 25% variance which is extreme!!

    You better check your oil........ Is it that new metal flake blend?

    No but for real was the motor warm when you checked the compression or cold. It will make a difference......Not to mention did you make your throttle body WFO?
    Don't be afraid of the bottle!!! Be afraid of your tune!!!

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