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| Pane |
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G'day
Last thursday my clutch started to slip completely. So i bought a new pbr rpm heavy duty model. For months before it began slipping i had this vibration on take off. The clutch joint told me that it was the old clutch wearing out. Now with the new clutch having been in there for 2 days, it has the same vibration again. 
So what the hell is causing it? Cheers
_________________ If its too loud your too old!!!!!!!!!!!! |
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| downingj |
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Was it a proper install or a "clutch joint"?
Did they machine the flywheel? |
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| joolz |
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Vibration or a shudder? id say its machining needed
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| GTBob |
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List of things causing clutch shudder.
flywheel surface (get machined) Faulty pressure plate(even happens with new items)** Poor fitting (letting gearbox hang on clutch plate before tightening correctly)** poor engine or gearbox mountings(check and replace) worn or loose universal Joints (inspect and replace) poor rear suspension (check springs, shocks, links, BUSHES etc and replace ) Last but not least weak leg muscles resulting in shaking at the knees (similar to knee trembler)  
_________________ Rotten Old Revhead!!! XW GTHO + EF ex cop car (exractors 2.5 cat back zorst !6" Simmons K&N +airbox mods Lowered with Bilstein shocks+Whiteline Bars NEXT THING Swap HO for GTP or Ferrari! |
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| Pane |
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G'day
I did the install my self. Ive done it before with the help of a mates dad who used to be a mechanic. I didn't get the flywheel machined cause the clutch place that i bought it from said that it shouldn't need it. I think that sounds like the problem. I doubt that its engine or gearbox mounts, the unis arn't that old (under 5000km each), its not my legs ( i have tree trunks for legs  )
When you say letting it han off the pressure plate before its been tightened what do you mean? I tightened that pressure plate first and then reinstalled the gearbox. Cheers
_________________ If its too loud your too old!!!!!!!!!!!! |
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| nlbxr6 |
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another thing to add to bobs list is oil or grease on clutch one way to check if it is shudder or flywheel is get a flat road slowly let the clutch out if you should be able to feel it grab in certain spots remember to do this at very low rpm if you have installed a heavy duty clutch it may also take some getting used to as you now have more pressure against the clutch plate try using different rpm when taking off or release a little to get car moving then depress and let out quickly i noticed this helped with mine as my clutch plate has no spring between the plate facings
_________________ efII wgn xr front xr ecu 17s filter pacemakers highflow cat & 2.5 manual conversion
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| Pane |
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G'day
I pulled the box out again
The spigot bearing in the back of the crank was f**ked, so that wasn't helping at all. The flywheel turned out to be nearly a mm out across the face  .
Once all back in again (i'm now an expert at pulling it out and putting it back in again ) its now much better. It drives smoothly and has no vibration  .
Cheers
_________________ If its too loud your too old!!!!!!!!!!!! |
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| nlbxr6 |
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the little things make a difference
_________________ efII wgn xr front xr ecu 17s filter pacemakers highflow cat & 2.5 manual conversion
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| GTBob |
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Pane wrote: G'day
I pulled the box out again The spigot bearing in the back of the crank was f**ked, so that wasn't helping at all. The flywheel turned out to be nearly a mm out across the face .Once all back in again (i'm now an expert at pulling it out and putting it back in again ) its now much better. It drives smoothly and has no vibration .Cheers Good one mate I hope the list helped always remember to machine the flywheel as this is the trap most home mechanics fall into as they don't have to guarantee their work if it shudders after fitting.
_________________ Rotten Old Revhead!!! XW GTHO + EF ex cop car (exractors 2.5 cat back zorst !6" Simmons K&N +airbox mods Lowered with Bilstein shocks+Whiteline Bars NEXT THING Swap HO for GTP or Ferrari! |
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| jessev1983 |
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That will teach you. Allways do it right the first time, dont try to cut corners cause it comes back to bit you on the a***!
_________________ 97 EL Fairmont Ghia I6
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| FPV_GTp |
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LOL " I didn't get the flywheel machined cause the clutch place that i bought it from said that it shouldn't need it. "
rule of thumb always machine flywheel when fitting new clutch had to have a larf sorry LOL I havent yet seen a guy that can measure 10th with his eyes or feel LOL
_________________ WANTED - Complete BTr4 and zf 6hp26 automatic transmission 6 cylinder and V8 transmission(s) suit rebuild? Drop me a PM if you can help would be greatly appreciated - thanks |
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