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WogsRus

clutch drag...Cant adjust to stop it

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So with my gearbox issues i tried to adjust my clutch as it is dragging.

 

I cant make it stop dragging. I believe clutch was replaced over two years ago, is it possible that the clutch is wrong.

Also, what can be the issues if i cant adjust the clutch to stop clutch drag. Fork and bearing etc?

 

Thanks

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Make sure hydraulics are bled properly and giving full travel

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tried it all, re-bled the clutch 10 times, readjusted the travel, no good. It looks like the clutch and throw out bearing are a mismatch, which is why its doing it.

 

Oh well new gearbox time

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I doubt it's your gear box mate. Save your self some money and have some one who knows what they are doing look at it first.

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T/Out bearing carrier is either the wrong length, or your clutch slave cylinder rod is too long.

 

But without looking at it in person, it's impossible to tell.

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If you saw what came out of the gearbox and the amount of metal shards, you would know why im saying its fcucked. I put the scope up there, not pretty. I do know what im doing its just that this car wast built by me so im constantly trying to figure out what the others have done to it.

 

The clutch and throw out bearing is a definite mismatch, its 4mm short by the looks of it.

 

Mr Pauly, the beer is waiting and i have more time so all good, i wont be doing anything any time soon just yet, car is derivable, just crap gear shifts and hates 3rd.

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Try putting a washer behind the clutch fork for pivot ball, to get more pivot/travel.

 

I also went through 3 clutches till i found the correct one. You need 92mm 'overall height' of the pressure plate+collar/bearing. Or mesaure from the flywheel surface to the surface the clutch forks ride on the collar (ears).

 

Also try using a shorter pushrod for the slave (you can use a bolt to test with)

 

Also check that your pressure plate is bolted down onto the flywheel properly and not hung up on any flywheel dowels.

 

Another thing, most aftermarket slave masters have the wrong length pushrods (too short) and wont push the required amount of fluid, something to check aswell, but doubt thats your problem.

 

We need more details if the problem.

Did you do a conversion? Where did you buy the clutch from?

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Cant give you any more details, it was all done before my time before i got the car.

 

Hence why i am working through all the possibilities etc.

 

I am unsure why the push rod length (on the slave) would make any difference at all, the system is static, the only thing that can change the rate of travel is the over all size of the piston????

 

I changes the clutch slave to the one recommended on this forum,  JB4055. Nissan don't have any for the Z specific anymore.

 

The master is the original Z one which is all new but an original Z one i recoed.

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I am unsure why the push rod length (on the slave) would make any difference at all, the system is static, the only thing that can change the rate of travel is the over all size of the piston????

 

If the pushrod is too long it wont allow the fork to return to rest therefore clutch won't be fully disengaging properly. There has to be some slack and the piston shouldn't be (bottom out) hard up against the fork.

Pull the gearbox and clutch out. 30 min job and measure the total height of the clutch assembly and collar and reassemble.

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ahh nope its not that, there appears to be plenty of slack if need be etc. I will take the box out once i get a new one, do it all at once.

 

I put new oil in yesterday, now the box sounds even worse, sounds like bolts in a tin can, LOL.

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If you depress the clutch and disengage the drive, yes, if you are in neutral and engaged, then it sounds REALLY nasty, its the main bearings are gone by the sounds of it. Sounds like main bearings.

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While in neutral, if the sound is louder with the clutch out then it will be your thrust bearing that is knackered. This may contribute to your clutch drag if it is rely bad.

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Thanks zzzzzed. The clutch bearing is one noise, this is main shaft bearing. Its quite BAD inside the box not just the thrust, i suspect thats just one of my issues. Thanks

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