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Discussion Starter #1
Alright so I've been getting a violent shake in 1st/2nd gears under moderate to heavy acceleration. Got under the car today and discovered that my CV joint is bad.. didn't get a chance to check out the center support bearing but I'm sure being original at 150k miles it can't be far behind. My main question: If I replace the CV joint and CSB, will the driveshaft have to be re-balanced? I know the CSB doesn't have much effect on the balance; my main concern is the CV joint and whether replacing it will have any adverse effects on the balance of the driveshaft. My other option is to purchase a used 90k mile driveshaft for $350 shipped. I'm a little wary of buying a used driveshaft though, so I'm leaning towards fixing my existing one. Comments/advice appreciated, thanks! :)
 

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It does not need to be rebalanced, but it can be if you want and it is not an expensive job.




PLEASE NOTE THAT I DO NOT OWN AN M5 AND THIS POST IS NOT INTENDED TO BE ARROGANT. PLEASE READ THE IMPORTANT REVISED DISCLAIMER THAT APPLIES TO THIS POST
 

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Discussion Starter #3
Cool, that's what I was hoping to hear. CSB and the $9 paper gasket for the CV joint are ordered :rolleyes:. Found a brand new OEM CV joint on ebay for $140, sent him an offer for $115 shipped :deal: so we'll see what happens there lol. Either way she'll be back on the road soon :M5launch:

Hopefully I'll have access to a lift to do this job.. otherwise jackstands and my driveway it is!
 

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Discussion Starter #5
Thanks for the link, I ordered the CV joint and CSB already so might as well fix my existing driveshaft. I've already done trans mounts, guibo has 10k on it, but I am gonna consider doing shifter bushings. Not looking forward to doing this in the driveway on jackstands :rolleyes: But on the bright side my exhaust is just headers cats and tips so that should be pretty easy :)
 

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My shifter bushings I assume had about 60K on them (when SSK was installed), and new ones made a big difference. It was difficult to shift when it was cold out before, and now, no such problem.
 

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Discussion Starter #9
Cool thanks man, appreciate it!

Well got 99% taken apart in the driveway today. Very thankful for my catback straightpipe exhaust system today, made it much easier to pull out while the car was a foot off of the ground :) Very happy with my decision to order the CSB now because the old one is trashed. Must be that ///MPower :3:

Unfortunately, I then realized I forgot to order the Terostat Butyl tape grrrrrrr Is there any other substitute for this stuff besides OEM? Really need the car back together within the next few days.. any advice is appreciated!
 

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Discussion Starter #12
Got my $11 piece of tape at the stealership :grrrrr:

On the bright side, got it all finished today, no more clunks or vibrations and acceleration is smooth as butter :flag::M5launch:
 

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Also the u-joint on the DS is a common fail item,after time the grease leaks out and it can't be serviced. A complete rebuilt DS will only cost you $300.. Comes with new u joint, CSB, and CV joint.
 

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Congrats on finishing the job, extra props (no pun intended) for the driveway wrestling match under the car! :cheers:
 

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Discussion Starter #16
Lol thanks man, wasn't actually that bad. My car is lowered and sits about 3 or 4 inches off the ground so getting it jacked up high enough was fun :3:

Honestly I was expecting the CSB to be the biggest pain, but it was fairly easy to get on/off, the worst part was actually getting the ***** new cv joint on! The new boot was extremely tight and I was working by myself so basically I held the top, used my other free hand to put a pick between the driveshaft and the boot and pry the boot out enough to make it possible to wiggle the boot down onto the driveshaft..that took about a 1/2 hr alone. Not to mention you cover yourself in 20 pounds of grease in the process :grrrrr:

Oh well it's nice and smooth now so the work was well worth it. Now gotta take it easy with the launches I guess :)
 

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Did you end up replacing the shifter bushings while in there, and if so did you find it made a difference?
 

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Sorry, checked today and the rebuilt one is around $400 along with your core in return. Driveshaft specialists in Texas does the rebuilds. I had a bad vibe/clunking under acceleration. CSB was shredded but it didn't help even after replacing it.
 

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Discussion Starter #19
Did you end up replacing the shifter bushings while in there, and if so did you find it made a difference?
Unfortunately no, lack of time to be honest or I would have. Needed the car back on the road ASAP. But I'll be sure to do them after I install my RK kit in the next few months and my stock clutch disintegrates :3: lol
 

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Discussion Starter #20
Sorry, checked today and the rebuilt one is around $400 along with your core in return. Driveshaft specialists in Texas does the rebuilds. I had a bad vibe/clunking under acceleration. CSB was shredded but it didn't help even after replacing it.
Ah ok sounds about right.. must have been your U-joint or the rear CV joint. I replaced both the rear CV joint and CSB which were both torn apart pretty bad. Smooth as butter now :)
 
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