Wierd sound. Anyone recognize it?

[epj3]

I really don't think it's the guibo... my suspicion that it's the middle u-joint kind of matches this Clunking at the rear of a BMW 540i '97 - YouTube

PS if you decide to replace the driveshaft, the absolute best deal is through cmuzzy on bimmerforums

[eatsleeplax]

Can't I just replace the u-joint in the driveshaft? Or are some special tools or some shit needed.

[epj3]

Originally Posted by eatsleeplax

Can't I just replace the u-joint in the driveshaft? Or are some special tools or some shit needed.

No, not really. Rebuilding a driveshaft is incredibly complicated. Too many things have to be perfect. Our drive shafts are simply not meant to be serviced. The rebuilt driveshaft from cmuzzy comes with a brand new center bearing.

See here, http://www.dtmpower.net/forum/e36-m3...t-options.html

As I said in that thread, the driveshaft cmuzzy sells is from http://www.driveshaftspecialist.com/...0html/BMW.html and so far mine has been perfect. It looked brand new. If you do go with a rebuilt driveshaft, do not buy one with serviceable bearings (grease zerks) since you'll have to drop the exhaust every 10k miles to service bearings that won't last as long as sealed bearings. All of this considered, I would replace the guibo & inspect the CSB first (since it's easy) and go from there.

[eatsleeplax]

Put it up on stands and turned the wheels. Turns out it was just the insulation hanging on the driveshaft and banging each turn. Its all gone now. Still gonna replace the giubo though

[epj3]

Originally Posted by eatsleeplax

Put it up on stands and turned the wheels. Turns out it was just the insulation hanging on the driveshaft and banging each turn. Its all gone now. Still gonna replace the giubo though

[eatsleeplax]

Originally Posted by epj3

hey, you guys heard that video, it sounded like something was actually wrong lol

[MagicM3]

I personally dont think insulation, (non Metallic substrate) could cause that noise. I agree with whoever said it is probably the driveshaft itself. Calvin can confirm that my noise was nearly identical. When I replaced the DS with a new CSB The noise is gone. Are you sure its all gone? Very strange....


If you end up going with a new DS, Don't go anywhere except

BMW replacement driveshaft, remanufactured BMW driveshaft, BMW drive shaft

These guys were great to work with and were fast and affordable. I believe that they have a warehouse in CA too!

Hopefully you won't need to go that route though!

good luck

[eatsleeplax]

Originally Posted by MagicM3

I personally dont think insulation, (non Metallic substrate) could cause that noise. I agree with whoever said it is probably the driveshaft itself. Calvin can confirm that my noise was nearly identical. When I replaced the DS with a new CSB The noise is gone. Are you sure its all gone? Very strange....


If you end up going with a new DS, Don't go anywhere except

BMW replacement driveshaft, remanufactured BMW driveshaft, BMW drive shaft

These guys were great to work with and were fast and affordable. I believe that they have a warehouse in CA too!

Hopefully you won't need to go that route though!

good luck

Yep, for sure completely gone. It was just the guibo catching on the insulation and the insulation banging on the driveshaft. I was able to recreate the sound from liftin and dropping the insulation. In case anyone was unfamiliar the insulation is quite stiff. Its like a hard dried out cardboard / thin particle board material. Its solid crap

[MagicM3]

weird! I certainly am familiar with that stuff, I cut all of mine out a year or so ago....shit is nasty!