700R4 EXT Housing Bushing
Thread Starter
Racer
Joined: Aug 2007
Posts: 260
Likes: 2
From: Pensacola Florida
700R4 EXT Housing Bushing
Have an 86 coupe with a 700R4 that has a little more slop than I like where the driveshaft enters the extention housing. I seem to remember reading somewhere that there is a bushing in the tail housing that sometimes gets spun out...and they make oversize bushing just for that...and might take out the rest of the vibration I get at high speeds. The rear oil seal hasnt started leaking yet, so I think I've caught it early. Any thoughts???
Le Mans Master
Joined: Sep 2006
Posts: 6,050
Likes: 147
From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
bushing
1. buy a new seal and replacement bushing, and keep going.
2. an oversize bushing compensates for a worn yoke.
3. If your driveshaft yoke is worn, replace it and install the proper bushing.
4. If your bushing is going south, you probably need a front u-joint on that drive shaft.
2. an oversize bushing compensates for a worn yoke.
3. If your driveshaft yoke is worn, replace it and install the proper bushing.
4. If your bushing is going south, you probably need a front u-joint on that drive shaft.
Thread Starter
Racer
Joined: Aug 2007
Posts: 260
Likes: 2
From: Pensacola Florida
1. buy a new seal and replacement bushing, and keep going.
2. an oversize bushing compensates for a worn yoke.
3. If your driveshaft yoke is worn, replace it and install the proper bushing.
4. If your bushing is going south, you probably need a front u-joint on that drive shaft.
2. an oversize bushing compensates for a worn yoke.
3. If your driveshaft yoke is worn, replace it and install the proper bushing.
4. If your bushing is going south, you probably need a front u-joint on that drive shaft.
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
Have an 86 coupe with a 700R4 that has a little more slop than I like where the driveshaft enters the extention housing. I seem to remember reading somewhere that there is a bushing in the tail housing that sometimes gets spun out...and they make oversize bushing just for that...and might take out the rest of the vibration I get at high speeds. The rear oil seal hasnt started leaking yet, so I think I've caught it early. Any thoughts???
Thread Starter
Racer
Joined: Aug 2007
Posts: 260
Likes: 2
From: Pensacola Florida
That's probably what I read...Haven't taken the tail off yet though. So, if it's the case, I would have to pull the tranny, right. I mean the extention housing's bushing is the only one I could replace without having to pull the tranny, or is the case bushing accessible with the tail pulled off??
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
True. The case bushing requires total, and I do mean total, disassembly to access. When I do a build, the case bushing is the very first thing I install in the bare case.
After removing the output housing (tailhousing) wiggle the output shaft up and down. If it wobbles more than 3/8 inch, case bushing is shot. Normal play on a good bushing is approx 1/8 inch up and down wiggle.
After removing the output housing (tailhousing) wiggle the output shaft up and down. If it wobbles more than 3/8 inch, case bushing is shot. Normal play on a good bushing is approx 1/8 inch up and down wiggle.
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Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
It is pressed in the housing, and is easily changed. Put it on the bench with the rear facing up. Once the seal is pryed out, the new bushing can be used to drive the old bushing out at the same time it is driven in. Find a correct size driver, or improvise a socket installed backwards on an extension, and gently drive it in straight.
