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Re: '88 m3: 2 questions (long)... (archive)

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Posted by michael on September 24, 2001 at 20:02:10:

In Reply to: '88 m3: 2 questions- exhaust manifold & trans leak posted by george may on September 24, 2001 at 12:53:44:

First the exaust:
The nuts do come off real regularly. I tighten mine each time the car is on a lift. I disagree about using bolts. The reason that studs are used in the first place is to prevent damage to the threads in the head. The head castings, new from BMW are in the $7,000 range. To remove and fix stripped thread i9n a head is in the $750 range, the nuts cost in the $1 range. replace the nuts! Accessing the rear seal involves disconnecting the drive shaft, removing the geubo (sp?), removing the locking plate (have a new one on hand), unbolting the rear yoke. The yoke come off the splined shaft easly. Carefully pry the seal out, being carefull not to bung up the aluminum where is seats. The shifter shaft is hard to remove. Many shops simply drive it in and put a new one on after (this is a secret that most shopw will not admit to). There is room for three or four seals within the tranny. While you have the shift linkage apart (did I forget to mention that its' disassembly is needed to get to the seal?)... this is a good time to renew the parts of the shift linkage that wear out:
Swivle joints
Little foam puck to dampen vibration.
Good Luck


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