[jimmywhisker]

I have recently had a few bearing issues that needed surgery. In the course of investigations and diagnosis, many members suggested that I look at the Torque Tube Bearings. I was wondering what have been the Symtoms that members with this issue have experienced and what mileage their cars were at the time.



I look forward to your feedback.



Cheers,



Peter

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[MB968]

I'm very interested in this issue not because I've noticed any problems, but because with the engine out, I'm staring at one end of the TT, and know the whole thing could be out with just a few more bolts. Is there a good writeup on maintenance? The parts catalog has no details on the insides of the TT

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[Monstrous4Banger]

Usually they squeak. Either when in gear, accelerating, or idling. When you engage the clutch, you can hear it wind down. Its a real PITA to rebuild. Not a whole lot of info out there. There are solutions though. You can rebuild with new bearings, and salvage the carriers, or upgrade the whole bearing unit. Im about to be taking on this project soon. I would recommend anyone with significantly more power than stock run the upgraded bearings.



See here: http://clarks-garage.com/shop-manual/trans-05.htm



And these are the "superbearing" upgrades. http://www.blackseard.com/site/index.php...s&Itemid=9

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[flash]

re: torque tube removal - you have to drop the trans, so, more than a "few more bolts"



re: symptoms - vibration is common



i found out recently that the collars are NLA. not making me happy. i plan to install the bigger bearings soon, but i need to limit what is going on at the moment, or the car won't be ready for paso. i'll be getting to it soon though. since you have to drop the trans to get to the torque tube, at the time that i pull the torque tube, i'll be changing out my 5th and 6th gears to something taller.

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[MB968]

[quote name='flash' timestamp='1332251627' post='123586']

re: torque tube removal - you have to drop the trans, so, more than a "few more bolts"



[/quote]



Well, guess I wont' be considering doing that now.

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[flash]

yup - not fun. sure wish they made a disconnect between the torque tube and rear bell housing. i may do that while it's out

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[Cloud9...68]

Yeah, just disconnecting the axle shafts from the transaxle is pretty much the opposite of fun...

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[jimmywhisker]

Flash, a couple of questions:-

1. When you say vibration is common - what form does this take? Idling, under load, at speed etc.

2. Are there any specific sounds, squeaks or rumblings to watch out for?

3, What are the implications of failed TT bearings?



Thanks again for all your great advice on the forum.



Cheers,



Peter

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[blue968]

I had a bad TT bearing before and it had a real bad vibration during accleration and after about 50-60 mph regardless of accelaration, it was very noticable it will not be mistaken.

I bought a used one and had it swaped, no issues now

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[Monstrous4Banger]

As long as its spinning, it will squeak. Ive been through three of them now(something about 4-500hp and a 20+ yo TT that doesnt hold up), theyve never vibrated for me. I never put too many miles on them once I knew they were bad though.

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[Grandpa#3]

Hello Gents, You all might want to read the post from RL about replacing the TT Bearings.



http://forums.RL.com/rennforums/924-931-...alled.html



Cheers,

Larry

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[tamathumper]

That link goes to some kind of parked page, probably because we aren't allowed to type THAT string. You'll have to cut and paste it into your browser and replace the RL with r e n n l i s t.

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[blue968]

Hey Monstrous,



After reading your post, a whinning/squeaking bearing sounds like it may make more sense of a bad bearing and I just assumed my vibration was a bad bearing. Im wondering if my TT was bent or had gotten twisted causing my vibration? After it was changed it was fine so I really didnt care at the time,wish I investigated it a little more.

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[Monstrous4Banger]

Yeah the spline shaft(not sure thats proper term) can get bent. Ive heard of that happening. I would imagine the bearings would be really shot at that point. Im going with the super bearings this time...should be the end of the issue once and for all. I dont have any more used ones laying around to slap in anyway, time to rebuild one. I had been avoiding it.

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[Cloud9...68]

Those super bearings look STOUT. They look like they can take 500 rwhp for about a half million miles.

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[RS Barn]

I've replaced Torque Tubes with bad bearings several times. I usually experience total failure vs noises. There is usally a severe vibration at 4000rpm and up. Almost like a shattered clutch disc. Lower rpm function is fine.

Once a bearing has let go there is a huge polar movement of up to an inch and contact between connecting DS sleve and TT housing. You can see wear on bolts of connecting sleve. There is usually clutch disc fragments in bell housing too.

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