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Thread: Borg warner problems

  1. #1
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    Default Borg warner problems

    I've got a 5 speed box in my VS, and when I did a clutch in it a while back about a week after the clutch was done was getting some terrible grindage noises from the box, after a few mates looked at it n stuff we decided that the thrust bearing had slipped off the fork and was spinning with the shaft up against the pressure plate.

    This was about a year ago, it got defected about a week later and has been in my backyard since.

    So I have the box out now and im looking at the thrust bearing in relation to the clutch fork when I move the fork it pushes the bearing in, when I bring the fork back it doesn't bring the bearing with it, it stays forward and im assuming when it stays forward it spins loosely up against the pressure plate and makes the ungodly noise I remember.

    Is the thrust bearing to clutch fork connection meant to be a tight fit? Or loose as a goose like mine? Or am I missing something? Is there meant to be a spring or retainer or something holding the bearing to the fork? Cos at the moment the fork just leaves the bearing behind...

  2. #2
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    as you are prob aware the clutch pedal has a spring on it that constantly pushes it down(i.e, its like it assists you when you push it down). For that reason the cable is always slightly tensioned and thus the thrust bearing does constantly run on the pressure plate, this is normal.
    I have heard that if it dosnt hold tight on the plate (when the clutch pedal spring somtimes breaks like mine) then it can actually cause a squeeling noise or somthing cause it sort of skips along on the pressure plate instaed of holding onto it nicely.
    Quote Originally Posted by Blown V6 Hatch View Post
    Has ACL stopped making flat top pistons or something? Grinding a heap off the heads seems to be the latest fashion...
    Quote Originally Posted by Reaper View Post
    It's cheap and half arsed - perfect fit for a Commodore
    Reaper

  3. #3
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    I think the problem is that when you release the clutch pedal, the clutch fork goes backwards and the thrust bearing doesn't go with it and it slips off the lugs, so then the bearing itself starts spinning and grinds on the lugs.

    The clutch cable was at the business end of its adjustment... I really need to get my clutch fork and take it with me to motor traders to look at a new one, if there is wear on the lugs and a new one will actually hold the bearing in there snug I'll just replace it...otherwise im running out of ideas. Happy to replace the clutch cable too if thats the problem, but if it aint broke I dont wanna fix it.

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    Oh yeah... Got the box out, couldn't get any further with that on a sunday. So I started pulling the front suspension out to change the springs and discs and pads etc. Disc wouldn't come off, took it off with the bearing no matter how much encouragement I gave it couldn't seperate the bearing from the rotor...So thats as far as I could go with that.

    So then I pulled the strut and spring out (lowered pedders springs and I *think* shortened shockers too) Got my spring compressors on there and pulled it apart and then the strut top bearing blew its balls all over me...So I need to get a pair of them too and thats as far as I could get with that.

    Anyone know if pedders do an actual shortened stroke front shocker, cos comparing the springs that came out to the stockies that are going in to get it over the pits...I have my doubts about fitting it together with the stockies... I have access to an old set of normal height struts that still work...I dont want to have to buy 4 strut top bearings tho.

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    pedders do do a short shock im sure.
    With above thrust bearing, what i was getting at but didnt convey right was the fact that the folk never leaves the thrust bearing(with the assistance of said spring on the clutch pedal). It constantly pushes on the trhust bearing so it dosnt need to sit tight in the folk as it never pulls it off the pressure plate. So even with your foot off the clutch the thrust bearing is still pressed against the pressure plate and spinning.
    Quote Originally Posted by Blown V6 Hatch View Post
    Has ACL stopped making flat top pistons or something? Grinding a heap off the heads seems to be the latest fashion...
    Quote Originally Posted by Reaper View Post
    It's cheap and half arsed - perfect fit for a Commodore
    Reaper

  6. #6
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    I understand.
    A loose clutch cable aint gonna put that pressure on the bearing tho.
    So clutch cable mebbe

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    i did a manual conversion on my VS about 4 months ago and i had this same problem. badly i also have a snapped clutch pedal spring which is a prick but i think the problem your having is that you havent screwed the ball joint (that the fork end attaches to) out far enough hence there being enough slack for the thrust to fall out of its place ..

    just an idea

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    ORSUM
    I didn't even know you could screw it out. This I must try.

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