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  1. #1

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    fresh rebuild on gtx supercharger

    I have just rebuilt my supercharger from my 2004 gtx 4tech supercharged with the sbt kit. New at this but anyways when i did the slip test i am only getting 68 in lbs and that is a complete rebuild.Is this normal if not what now? Any help would be greatly appreciated. .. spring washers are in s/c )()() nut position


  2. #2
    Moderator Snoman's Avatar
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    No..you should have slip set/pre loaded to about 100/110 inch lbs..you want your slip to sit a 90 inch lbs when its broke in..You need to either buy a set of Mc Master carr washers OR mix and match washer configurations till you can acheive that desired slip....Here are some configurations to try:

    )))()]nut
    )(())]nut
    ))())]nut
    )((()]nut

  3. #3
    Got Boost? psycho rxp's Avatar
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    Welcome to Green hulk.

    That is too low, when it breaks in, it will be even lower.

    Most people would advise agaist most SBT parts, and to use the OEM rebuild kit on items as critical as the SC, but you could try to get the tension higher by getting some OEM, or McMaster spring washers, or even Some shims to put between the washers.

    http://www.4-tecperformance.com/inde...oducts_id=1254

    OR

    http://www.4-tecperformance.com/inde...roducts_id=700
    Does the Kit come with ceramic clutch washers, Or metal ones?

    If not the metal ones u will need a set of good ones like these

    http://www.4-tecperformance.com/inde...roducts_id=448

  4. #4

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    The sbt kit did come with the upgraded metal washers.

  5. #5

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    I will try the different washer configurations later and see what i get.

  6. #6
    JT jpt7779's Avatar
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    Click image for larger version. 

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    With a NEW rebuild kit 124 in-lbs or 10.3 FT-Lbs sounds a whole lot better with a 10 psi stock charger.

    I use McMaster spring washers and would pre-load it to 144 in-lbs or 12 Ft-lbs and it will settle in around 125in-lbs or 10.3 Ft-lbs. CHeck it again after 2-3 trips to the lake and it should be perfect.

    *** X Charger data 255/260HP ***
    Last edited by jpt7779; 04-24-2015 at 04:53 PM.

  7. #7
    Moderator Snoman's Avatar
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    Quote Originally Posted by jpt7779 View Post
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    With a NEW rebuild kit 124 in-lbs or 10.3 FT-Lbs sounds a whole lot better with a 10 psi stock charger.

    I use McMaster spring washers and would pre-load it to 144 in-lbs or 12 Ft-lbs and it will settle in around 125in-lbs or 10.3 Ft-lbs. CHeck it again after 2-3 trips to the lake and it should be perfect.

    Gotta remember this is for an X charger,NOT an 04 stock 7 lbs charger.....124 is to much for the old original 7 lbs chargers...

  8. #8

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    What is a good slip number for the stock 2004 gtx 4tech 185 supercharger?

  9. #9
    JT jpt7779's Avatar
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    Snowman is correct about the "X-charger data", this is the correct data for a stock 2004-2005 GTX 185hp ski.

    So I would pre-load it to 129 in-lbs (10.8 FT-lbs) so that it ended up at 106 in-lbs (8.8 FT-lbs).

    Sorry for the confusion.

  10. #10

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    Thanks everyone for the help. I am going to try the different washer configurations to get the preload at 129 in-lbs so it breaks in and be around 106 in-lbs or So.

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