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JustenGT4
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Location:
Canberra
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June 2003
clutch guru required Tue, 14 June 2005 03:32 Go to next message
I'm having an annoying issue with my twin plate setup in the GT8. It was there with the W58 but at that time i thought it was actually a problem with the box not the clutch...still there with the tremec (actually worse) so 99% sure it's the throwout bearing.

Basically when the engine is under load at low rpm the throwout bearing rattles like a bitch...very very noisey. as soon as you have any decent revs on board or you are only dawdling along the noise goes away.

I don't think the clutch fork is pulling the bearing off the pressure plate enough so they just touch and under these conditions and make a hell of a racket.

I have no idea why only under load at low rpm but does anyone have a potential fix? If i have to pull the whole thing out again i won't be a happy camper but could be what it comes down to as you can't live with this noise.
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ae86slaver
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Registered:
February 2003
Re: clutch guru required Tue, 14 June 2005 03:41 Go to previous messageGo to next message
maybe its a worn spigot bearing?

mine did this (still is as i don't have the tool to get it out Confused ) does it under low rpm load, and at idle
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oldcorollas
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Kita-Ku, Sapporo, Japan
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January 2003
 
Re: clutch guru required Tue, 14 June 2005 03:41 Go to previous messageGo to next message
what happens under various conditions when you 'slightly' load the throwout bearing by putting light pressure on the pedal?

Cya, Stewart
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JustenGT4
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Canberra
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June 2003
Re: clutch guru required Tue, 14 June 2005 03:44 Go to previous messageGo to next message
Everything is brand spankers from the flywheel to the diff.
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JustenGT4
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Location:
Canberra
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June 2003
Re: clutch guru required Tue, 14 June 2005 03:46 Go to previous messageGo to next message
Hey Stew, as soon as any pressureoad is applied to the clutch pedal the noise stops..strictly an in gear problem when the thrust bearing should be sitting there doing nothing
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oldcorollas
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
 
Re: clutch guru required Tue, 14 June 2005 03:47 Go to previous message
I'm no clutch expert but...

ae86slaver wrote on Tue, 14 June 2005 13:41

maybe its a worn spigot bearing?

mine did this (still is as i don't have the tool to get it out Confused ) does it under low rpm load, and at idle


i'd thougth of this, but discarded it since when the clutch is disengaged, the input shaft is firmly held in place by the friction plate.... unless you mean the spigot is so worn that it is allowing the friction plate to be clamped off-axis?? that's baad mmkay..

Justen, whens the last time you checked spigot bearing? (last time any of us did? Wink )

(edit: man i'm getting some delay in posting today...)

maybe bearing is dry.. or has been running enough to heat it up and dry it out? how did it feel last time the box was off?
you could always just give it a little more pressure Wink... or maybe better to back it off a bit.... is there a spring to pre-tension the clutch lever to pull it back? the springs between lever and throwout bearing carrier are in place?

[Updated on: Tue, 14 June 2005 06:26]

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