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Thread: Breather nut?

  1. #1
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    Default Breather nut?

    I went to put a MPS on the car today and found out i dont have a breather nut on the supercharger. Bought the car this way, i know the supercharger was replaced by a dealer before i bought it. guessing i need to get one to install after the MPS is installed.
    Did some searching and found a thread where a guys had his pulley fall off after a year, thats crazy since it press fit.
    What is the main purpose of this breather nut and could there be any damage from not having it one?

    2000 GTP if that makes a difference
    Last edited by GTPNovak; 02-04-2017 at 10:35 AM. Reason: added year of car

  2. #2
    Killa Bee Scottydoggs's Avatar
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    Default Re: Breather nut?

    zzp mps comes with push tree type clip. the bolt will not fit any more cause it cant clear the pulleys bolts.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

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    Default Re: Breather nut?

    So no need for anything?

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    Killa Bee Scottydoggs's Avatar
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    Default Re: Breather nut?

    if you bought a new mps from zzp it comes with the push tree. push it in the shaft end. thats it.

    and if the mps was to ever come off the shaft its not because the bolt was missing. they had bigger issues at hand.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

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    Default Re: Breather nut?

    i bought a smoothflow system it did not come with anything to put in the end.

  6. #6
    Killa Bee Scottydoggs's Avatar
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    Default Re: Breather nut?

    ahhh, the nut will fit on that brand. i got em myself and use the nut. not the end of the world tho. the push clip can only be there to protect the threads, same as the nut.


    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

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    Default Re: Breather nut?

    Is that the only purpose is to protect the threads?

    I will just buy one and be done.

  8. #8
    Killa Bee Scottydoggs's Avatar
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    Default Re: Breather nut?

    i cant see it venting anything. dont even see a breather hole in it.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  9. #9
    GrandPrix Junkie CrazyGuy03's Avatar
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    Default Re: Breather nut?

    The center has that porous stone like material in it. I don't think I use it tho
    2003 Buick Regal GSX lots of mods - click here to see latest build - http://www.grandprixforums.net/threa...ld-for-the-gsx

    *For Reference - Does not have a Zack Howard Cam - It's an Intense Stage 3 - Thank You*

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    Default Re: Breather nut?

    Pulled the pulley and the M8x1.25 stud broke off in the supercharger shaft. now i am Fed. i have easy outs i will try but damn why did that happen?
    such a easy project just turned in the a large one.

  11. #11
    GTP Level Member cheatah faheatah's Avatar
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    Default Re: Breather nut?

    Turn it the right way ?
    not what it looks like

  12. #12
    Killa Bee Scottydoggs's Avatar
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    Default Re: Breather nut?

    you let one part of the puller turn when installing it, only the nut cant turn thus pushing the hub on.

    if it broke off while pulling the pulley, thats cause it was not supposed to be used yet. the threaded rod is for installing only.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  13. #13
    Killa Bee Scottydoggs's Avatar
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    Default Re: Breather nut?

    Quote Originally Posted by cheatah faheatah View Post
    Turn it the right way ?
    if you were to turn it the wrong way it would get loose and fall off lol theres more then one moving part, things need to be held still while you work the drive bolt or the nut on that bolt.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  14. #14
    GrandPrix Junkie CrazyGuy03's Avatar
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    Default Re: Breather nut?

    ^ yup

    i see a lot of people thread the bolt on then pull the pulley off and of course the bolt snaps
    2003 Buick Regal GSX lots of mods - click here to see latest build - http://www.grandprixforums.net/threa...ld-for-the-gsx

    *For Reference - Does not have a Zack Howard Cam - It's an Intense Stage 3 - Thank You*

  15. #15
    GTP Level Member cheatah faheatah's Avatar
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    Default Re: Breather nut?

    Idkwtfitaa
    not what it looks like

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    Default Re: Breather nut?

    Well the the instructions said to put it in i had my doubts.

  17. #17
    Killa Bee Scottydoggs's Avatar
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    Default Re: Breather nut?


    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  18. #18
    GrandPrix Junkie CrazyGuy03's Avatar
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    Default Re: Breather nut?

    You have leave room for the pulley to move
    2003 Buick Regal GSX lots of mods - click here to see latest build - http://www.grandprixforums.net/threa...ld-for-the-gsx

    *For Reference - Does not have a Zack Howard Cam - It's an Intense Stage 3 - Thank You*

  19. #19
    Killa Bee Scottydoggs's Avatar
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    Default Re: Breather nut?

    Quote Originally Posted by GTPNovak View Post
    Well the the instructions said to put it in i had my doubts.
    off you use the little nub tip that centers the bolt.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW

  20. #20
    GrandPrix Junkie CrazyGuy03's Avatar
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    Default Re: Breather nut?

    Nice video Scott. Easier watched then said
    2003 Buick Regal GSX lots of mods - click here to see latest build - http://www.grandprixforums.net/threa...ld-for-the-gsx

    *For Reference - Does not have a Zack Howard Cam - It's an Intense Stage 3 - Thank You*

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