Clutch rubbing the flywheel bolts

[Merlin]

I had a little read up on the net about this last night as I am about to swap both the clutches in my cars (one of which is a performance clutch and lightened flywheel). From what I read it seems there are four likely scenarios:

Its the wrong clutch or flywheel
The clutch plate or flywheel has been wrongly installed ie clutch plate is backwards
The flywheel has been skimmed too much
The flywheel bolts have stretched and allowed the flywheel to move (probably the least likely IMO)


Those ARP flywheel bolts are the exact ones I am putting on the track car when its Competition Clutch goes in

http://www.racingxs.co.uk/index.php?rou ... t_id=20009

Use these when replacing the standard flywheel bolts or after upgrades (flywheel bolts are not reusable).

I have visually compared OEM flywheel bolts to the ARP ones and they are the same dimensions. I just assume the ARP bolts are made from mithril or Wolverine's bones.

Yeah if it was the other way the interference would stop you bolting the cover on!

What was it catching on? From what I read on the net the most common reason for this happening was that the clutch plate was on the wrong way round.

[106pete]

I'm guessing the flywheel as been skimmed at as the clutch was the right way around. You can see from the pics the flatter face was against the fkywheel, the other side is raised to the depth of the spring.

Unless one of the other are wrong

[Merlin]

A few more pics of the clutch plate (both sides) would help.

The amount of meat on our flywheels is tiny. The wearable depth of a standard flywheel is only 0.1mm from new according to the service manual. I got my 2nd hand (nearly new) Fidanza skimmed and they barely took anything off, just refacing it to get rid of heat spots / deposits. I think the over skimming is more of an American car problem Do you know if the flywheel was brand new when it was installed.

[106pete]

I've just done some comparisons to my fidanza flywheel and the distance from bolt face to friction plate face is very different.

This flywheel only has 6.7mm and the fidanza has 10.6. I don't see how any friction plate will be any different to miss the bolts, it would need smaller springs which I've never seem before.

Here's a pic of the makers emblem that I don't recognise!


Another part number off the clutch which I can't find any info on but I don't think this was the problem


The center bush is a little buggered aswell so gotta replace that ideally.

[Merlin]

@106pete did you ever get to the bottom of this? Was it that flywheel?

[106pete]

Not really, I measured the depth of the recess for the bolts and it was less than other h22 flywheels I had so assume this was the problem but don't know what the flywheel was from or what make so scrapped it in the end.

The clutch was also a strange part number and damaged from the rubbing so scrapped that aswell

[Merlin]

Did you replace them with know good ones and it worked?

[106pete]

They were from a car I was breaking bud so never needed the replacment bits, I just couldn't sell them on like they were.