Clutch grinding - PFL legnum - EVO clutch

[Pickles]

Howdy all.
Just looking to gather some more information on my legnums clutch.

It was replaced in November 2009 by SKR. It is the model "MBK-7420SO", Exedy Sports Organic.
According to the previous owner (who got it put in) the bellhousing was not shaved when the clutch was put in. The flywheel was machined (according to my receipts)
The issue with the clutch is the following:
When launching, or changing gears (and the revs aren't matched), the clutch grinds. It is fairly severe and sounds like chewbacca taking an AGB (after grog bog)
What are the common issues that cause this? I was told it is an EVO clutch and it does this, I don't know what to think. Jonson assures me that it is just a characteristic of the clutch and that I should live with it or replace it.. BUT:

Last night, after coming home from a hills cruise, I went to launch hard. I had left my foot on the clutch slightly and the clutch slipped quite heavily (due to my foot). I figured it was alright and kept driving.
Parked at my friends house for twenty minutes, and upon starting the car and taking off, the grinding had completely gone! Sadly, only for ~5 launches... then it came back.

Can anyone spare any light onto this? Are there any possible fixes short of taking the clutch out/replacing it? Any advice is appreciated. I'm no mechanic.

 

[AKKO]

stock or evo flywheel? i remember nick mann on cvr4 selling adapters / spacers of some sort but might not be related...?

 

[Pickles]

I would assume its the stock flywheel, but I really can't be sure. There are no receipts for an evo flywheel in my book.

 

[Jonson]

My honest opinion is that Steve and the Exedy guy fucked up. As far as I know it was the first Legnum clutch he did, and there were no listings for them when the job was done. I believe the clutch is heavily glazed casuing chatter or that the pressure plate is not clamping properly. It's been like that for ages, I told Anthony (last owner) the only way to fix it is to replace it....

 

[lathiat]

As I understand it the 7420 is not a direct fit when using the standard flywheel. Everything doesn't quite line up right, it obviously mostly works but seemingly something is not quite right. I think it may well also be placing pressure on the clutch release bearing permanently, may even be the problem? Haven't been in the car hard to say.

Unfortunately it was still early days for clutch kits in 2009 I think for legnums and that wasn't so well understood. This is why the Nick Mann adapter kit exists and since then the 7223 was determined as the correct kit.

I don't imagine this would be fixed without pulling it all apart again, any which way.

 

[Pickles]

Thanks for the clarification Jon, and the advice trent!
I would safely assume it has to come off to be fixed aswell.. sadly.

 

[mills_88]

Mine does this on take off, never got to the bottom of what is causing it but 3-4 years later and many k's (including track and drag outings) it is still working perfectly beside the noise on take off.

 

[ed84]

Mine does this also Jon!
I certainly get some strange looks in car parks, especially slopey ones

 

[Jonson]

Yours is the clutch plate design Ed, it's a solid button

 

[Unco_Tomato]

Mine is doing it on take off too, wish I could fix it, really takes away from the enjoyment of the manual for me. If anyone ever manages to fix it i'd love to find out how.

 

[Pickles]

Mine is doing it on take off too, wish I could fix it, really takes away from the enjoyment of the manual for me. If anyone ever manages to fix it i'd love to find out how.

Well, it's currently being fixed.
With a replacement clutch
heh

 

[Jonson]

So far Oscar, you were missing 2 bellhousing bolts and the snap ring on the drivers side transfer case shaft.... Quality.

 

[mills_88]

Since I had the gearbox out for something else I thought I'd get some photo's of this issue. This is where the grinding noise comes from.

I am going to try and shave a bit off my pressure plate where its catching to prevent it happening when it goes back in. Don't know how much will require taking off but I am just going to grind down the areas where it is scratched to begin with.

 

[AKKO]

may still have my nick mann spacer and longer bolts in the shed if it will help anyone..

 

[mills_88]

How do they work?

 

[AKKO]

Will double check over on CVR4 when not on my phone and post back...

 

[AKKO]

http://www.clubvr4.com/forum/showth...l-Converter-Kit&highlight=evo+flywheel+spacer

 

[mills_88]

Yeah, I might be interested in taking that off your hands and I'll just find an evo flywheel to go with them. Less ghetto than grinding the pressure plate.

 

[lathiat]

my clutch doesn't seem to grind.. exedy 7420 with nick mann spacer and evo 7 flywheel.

 

[AKKO]

No worries, will see if i can locate it. pretty sure i didnt sell it yet...