North American Turbocoupe Organization



Rear end replacement?
KentCT88TC Offline
Senior Member
#1
Hey folks, I've been moving my small business, and it has been taking most of my time-- so havent been posting. Thought I had my 88 TC all fixed up. Took it up on a two hour trip last weekend, and noticed when I made a 90 degree turn, left or right, a groaning noise coming from the rear end. It was loudest when it was driven for awhile and warm. I put it in the shop and they are replacing the oil in there. Guess it is positraction with a little clutch in it. Anyway, they said that there is some play in the gears in the rear end, but that nothing is broken yet. They said this may work for a short term fix, but that at some point, I'm going to need another rear end. I don't think new ones are available, are they? Do I have to go with a used one? Anyone else have this problem? -Kent
-KentCT
-'88 Turbo Coupe, K&N, Gillis valve @18 lbs., 2.5 " exhaust.
-2000 Mustang GT 373 gears, Diablo computer chip, cold air intake, Typhoon intake manifold.
-2001 Jeep SE 2.5, AEM cold air intake, Gates headers & exhaust, throttle body spacer, Jet Stage 2 chip
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AerobirdMotorsports Offline
Banned
#2
Kent,

You only need to change the gears, not the whole rear end, and yes they are still available new. In just about any ratio you could imagine as well.
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KentCT88TC Offline
Senior Member
#3
Mike,
Thanks very much. I just called the shop. They said it is the "spider gears" which are worn out. I told them I was talking with the gearheads on the Turbo Coupe site, who say they are still available new. This is good news-- I would much rather rebuild original than bring in something used I don't know anything about. So much to learn when you have an old car. This T-Bird is getting to be an expensive, high maintenance addictive kick... no wonder you named your car after a woman. -Kent
-KentCT
-'88 Turbo Coupe, K&N, Gillis valve @18 lbs., 2.5 " exhaust.
-2000 Mustang GT 373 gears, Diablo computer chip, cold air intake, Typhoon intake manifold.
-2001 Jeep SE 2.5, AEM cold air intake, Gates headers & exhaust, throttle body spacer, Jet Stage 2 chip
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AerobirdMotorsports Offline
Banned
#4
Spider gears are used to connect the axles together with a clutch pack for the posi (Ford Trac-Loc). Those don'e involve the ring and pinion gear at all (the actual ratio gears). Those are also available new and are very affordable to buy and install, I suggest looking into having it done now. They can re-use your posi clutch pack unless it too is bad.
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Matt S Offline
Posting Freak
#5
I suggest if they're going to do the gears go ahead and get all the bearings done and a new clutch pack for the posi. Then it'll be a while before you have to think about it again. I had mine rebuilt for a few hundred and it was painless, but my gears were alright.
Sold it Sad*
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