Wheel Bearings - How often do these fail?

[Mobius]

Same noise, but I think different issue. Mine isn't affected by braking.

Update on my noise: by chance I disengaged the clutch while rolling (usually I leave the clutch engaged until right before I come to a stop etc....) and the noise quit. Throw out bearing perhaps?

[Nismo]

Exedy twin plates are known to make noise, read this on the other forum Banzai Racing commented on this maybe search there?

[Mobius]

Originally Posted by Nismo

Exedy twin plates are known to make noise, read this on the other forum Banzai Racing commented on this maybe search there?

I never considered that, although it would make sense to me that it might make noise when it's disengaged, not the other way around. But I'll follow that lead, thanks.

[TitaniumTT]

My exedy twin disc mackes noise when completely disengaged. If you've ever seen one you'll understand why. There won't be any noise coming from a properly installed and torque down twin disc when it's engaged though

[Mobius]

Does your Twin disk rattle, or make a different noise TTT? Mine makes a whirrring noise when the clutch is disengaged, but not a rattle like I've heard on videos that I've been able to find on the subject. I'm half convinced I need to drop the tranny again and change my throw out bearing, which is only 5000km old.

[TitaniumTT]

The whirring is most likely the T/O bearing. They do rattle a bit though. I've gone through one T/O bearing too and now the second is making a little noise as well......... I'm going to check out the fork next time the tranny is down/engine is out as I think that may have something to do with it. Never heard of these twin disc's chewing threw T/O bearings any more quickly than another clutch. The pedal is lighter than some of the aggressive ACT PP's

[Mobius]

Yah, that is pretty much what I thought. I did put a brand new fork on when I put the Exedy in, as mine was bent, but I thought the T/O bearing was new enough that it would be fine. I didn't want to wait for one to come in. I guess I'll just pull the tranny on the next rainy weekend and replace both the pilot and T/O bearing, and see if the noises quit.

[classicauto]

Just to add a thought for the wheel bearing topic:

Sitting kills bearings. Most of these cars (up in the winter blessed climates) don't move for half the year. Do that for two decades and chances are they will be crapzord.

Starting with fresh bearings, yes, proper maintenance and they should last a LONG time (like maybe.....20 years?? )

I've seen alot of FC's up here with shot to shit wheel bearings, front and rear. Most people can never tell because their exhaust drowns out the droning noise the cooked bearing will make.

No need to replace until you have play though. Even slight play. Jack up the wheel, grab at 12 and 6 oclock and pull in and out. Play? Shot bearing.

[TitaniumTT]

or loose bearing, thin grease, not properly torqued etc etc. Movement doesn't necissarily mean shot bearings, it means something it loose and needs addressing

[classicauto]

Yeah I guess I'm lumping in sealed bearings with our serviceable type. You're right.