Clutch shudder.

Discussion in 'Technical' started by Zeo, Jun 9, 2012.

  1. Zeo

    Zeo Active Member

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    I had a new extreme clutch and new light flywheel put in my car at easter and it seems that recently I am getting a little bit of shudder up shifting and a lot more down shifting, should I take it back and have it checked it out?
     
  2. lurker_nz

    lurker_nz New Member

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    Is the Pope German ???
     
  3. Tektrader

    Tektrader Z32 Hoe, service me baby

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    did you machine the fly wheel? if you didnt you should have and that would probably be the reason for the shudder.

    How many klms have you done on it since it was fitted?
     
  4. Zeo

    Zeo Active Member

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    I don't know if they machined the flywheel and I think I have done about 600klms.
     
  5. Sanouske

    Sanouske Retired Moderator

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    You've probably been driving it too softly and you have glazed areas. If it was installed incorrectly the shudder would have been there from the beginning.

    Take it for a decent spin with snappy gear changes and see if it improves. Try not to nana the clutch actuation.
     
  6. WhiteNight

    WhiteNight Littering and...

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    A few clutch kicks at wot in 4th at 120 might help?
     
  7. Sanouske

    Sanouske Retired Moderator

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    Lol. Yeah sure. I guess that's in the same drivers manual as a red line a day keeps the rebuild away...

    What I'm getting at is if you've got a decent clutch that bites well or is designed to bite well. Feathering your changes and really being soft on it doest do it any good. It's designed to be driving with a little ferocity. Within reason.

    If it indeed has glazed up continuing to drive softly on it will only allow it to continue to slip and glaze the remaining friction surface that is currently keeping you moving.

    Like everything there is a bed in period. And unfortunately if you've been soft with your changes and not positively shifting it will glaze.

    Other option of coarse is to call it quits and drop the box and see what's going on. If there is a problem send your moneys and have it replaced/inspected/warranty?

    Being a new clutch and a new flywheel. All should be working from the get go providing the installation was correct. And if it wasn't correct you would notice it within the first 100km. Provding it's indeed the clutch. Could be slave cylinder, master cylinder. A miss adjusted pedal would also be noticed from day one. So I would thin Zeo would have spotted this a while ago.
     
  8. Bob Lloyd-Jones

    Bob Lloyd-Jones Oldreverbob

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    Sometimes if the clutch has got some oil on the clutch plate it will shudder , rear main might be leaking oil into the bell-houseing.
     
  9. dimi

    dimi New Member

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    i'm not quite sure why people would suggest that you needed to have your new fly wheel machined :confused:

    shuddering is a symptom of hot spots on the flywheel. Xtreme branded clutch discs are notorious for developing shudder. i cannot explain the reason it occurs because its happened on cars that are babied and cars that are flogged, i wont use them any more.

    although unlikely check for seal leakage first, it will take more than a couple of drops to make the clutch feel funny.

    best course of action is to find a nice long hill. load the motor up in a high gear, depress the clutch peddle slightly and allow the clutch to slip and flare up 2krpm roughly. continue for 3-5 secconds. allow the clutch to cool down, and repeat the same process on the next hill. will take a 4-5 cracks at it to make a difference. if it isnt making any improvement, the flywheel is warped badly. replace it and the clutch disc and start again ;)
     

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