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  1. #1

    Xs Ic-stage3 Sc-throttle Size??

    hi there,

    i know the xs ic has a 3" size in and outlet, but what about the stage 3 SC outlet and the throttle inlet on the 215 SCIC ?????

    can i use straight 3" pipes and couplers??

    ciao Jim


  2. #2
    JFizzleJR's Avatar
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    The inlet and outlet will fit better by using 2.5"

  3. #3
    perhaps i have to tell also it would be for modding a 2008 430hp wake.

    ciao jim

  4. #4
    hi jfizzle,

    do you think i can use 3" pipes and 3"to2.5" silicone reducer couplers.

    are the sc and throttle 2.5" then??

    thanks Jim

  5. #5
    JFizzleJR's Avatar
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    I have a 3" pipe for the s/c to i/c but to the t/b from i/c it's 2.5" only because it's too tight of a fit to mess with until I get bored. I'm not sure if size matters in this case, but probably not. The s/c and t/b are supposed to be 2 7/8" but as I said, 2.5" couplers fit nicely.

  6. #6
    thanks jfizzle.
    that clears everything up

    ciao jim

  7. #7

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    FYI, the STS turbo system for LS1 F-bodies uses 2.5" piping all the way from the rear of the car to the front. Some of those are making over 500 hp at the crank at around 7 psi. 7 psi is less dense than our ~10, so the losses will be even worse. My point is that 2.5" will be fine for us. Also, lots of size transitions can actually hurt things more than just staying small the whole way.

    Mike

  8. #8
    wouldn´t 2.75" pipes makes less size transitions then with the 3" XS ic and the 2 7/8" t/b and sc?

    ciao Jim

  9. #9
    JFizzleJR's Avatar
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    I would have to argue that it doesn't make a big enough difference to put that much effort into it. Also, depending on your mounting position, the bigger pipes may be very hard to install. Stick with 2.5" pipes and 3"-2.5" reducers IMO.

  10. #10

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    Quote Originally Posted by jimjim View Post
    wouldn´t 2.75" pipes makes less size transitions
    Yes, but 2.75" pipe and mandrel bends are hard to come by.

    Mike

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