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  1. #1
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    E46 M3 turbo Boost Question - How much power will the motor take with 9:1 CP Pistons?

    I have a Turbo E46 M3 rhd, Single gtx3582r.

    Im going to install CP Pistons (9:1cr) with the stock rods. How much psi would the motor be able to handle safely?

  2. #2
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    Loaded question man.

    Why use the stock rods if you are going with the upgraded pistons?

    A built S54 is pretty stout but you should be fine up until the block needs sleeves or you reach the limit of the stock rods.

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    You won't reach the limitations of the motor with a GTX35...unless it's tuned poorly.
    Rep Points > Posts since 2010

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    Click here to enlarge Originally Posted by PotatoHeaD Click here to enlarge
    I have a Turbo E46 M3 rhd, Single gtx3582r.

    Im going to install CP Pistons (9:1cr) with the stock rods. How much psi would the motor be able to handle safely?

    I have a set of Arrow Precision S54 rods. 500 USD.
    Reason I am selling is I use Heavy Duty Carrillo Rods.
    E36 M3 Euro TT 60-130 mph 4.49 s
    E46 M3 3.6L TT 60-130 mph 4.22 s
    All Wheel drive M3 Twin Turbo
    997 TT



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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Loaded question man.

    Why use the stock rods if you are going with the upgraded pistons?

    A built S54 is pretty stout but you should be fine up until the block needs sleeves or you reach the limit of the stock rods.
    That seems stupid to open up the engine to replace the pistons for high hp but not the rods? Foolish mistake if you go that road.

  6. #6
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    Click here to enlarge Originally Posted by jacobs323i Click here to enlarge
    replace the pistons for high hp but not the rods?
    Ya I don't understand it either.

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