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  1. #1

    Angry noise coming from sc impeller after upgrade

    I replaced my oem sc impeller (11 fzr) with a rd c1 impeller for a couple of more lbs of boost i notice some grinding sounds sometimes now coming from the sc housing; just wondering if i did anything wrong on the install,
    ps i followed instrutions to the T,

    i also added oil to that little prime spot in the housing.

    could i have screwed up the clutch, i torqued to 70 in-lbs


  2. #2
    Whats that whistling noise? jtskier11's Avatar
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    I did the same wheel. Mine makes some noise and I've chocked it up to clutch noise. I've been beating on it for a good 9-10 hours of C1 and R3 now and its still pushing me up to 79.

  3. #3
    3 x 1800 feeding my obsession sconti stellari's Avatar
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    Quote Originally Posted by peterj59 View Post
    I replaced my oem sc impeller (11 fzr) with a rd c1 impeller for a couple of more lbs of boost i notice some grinding sounds sometimes now coming from the sc housing; just wondering if i did anything wrong on the install,
    ps i followed instrutions to the T,

    i also added oil to that little prime spot in the housing.

    could i have screwed up the clutch, i torqued to 70 in-lbs
    these wheels are a little noisier than factory, reach inside the sc with the filter off and make sure the wheel has no movement like side to side , back and forth, and only spins one way.
    if that checks out you should be fine.

  4. #4
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    Quote Originally Posted by sconti stellari View Post
    these wheels are a little noisier than factory, reach inside the sc with the filter off and make sure the wheel has no movement like side to side , back and forth, and only spins one way.
    if that checks out you should be fine.

    There is slight movement side to side that is normal. Rest is true

  5. #5

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    if its spinning free in one direction and does not feel or sound as tho its not rubbing when you do this i would not worry. all the boosted wheels make more noise. what ecu are you running.

  6. #6
    once again thanks for the expertise

  7. #7
    mckma's Avatar
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    he said grinding sound guys ,I have a c1 nothing sounds like its grinding ,, when you sat that supercharger down wiggle it around to make sure it is seated ,snug the outter bolts and turn the sc to check for smooth operation then tighten ..

  8. #8
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    Quote Originally Posted by mckma View Post
    he said grinding sound guys ,I have a c1 nothing sounds like its grinding ,, when you sat that supercharger down wiggle it around to make sure it is seated ,snug the outter bolts and turn the sc to check for smooth operation then tighten ..


    is there a spacer between the back plate and wheel

  9. #9
    Whats that whistling noise? jtskier11's Avatar
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    Grinding, chatter. Alot of times people mistake that for a bad sound when in actuality its normal. But yes he needs to see if the wheel may be contacting the housing.

  10. #10
    3 x 1800 feeding my obsession sconti stellari's Avatar
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    there should be no movement except the one direction.
    I would pull it back out and check everything if you are not 100% sure.

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