rolling with punches lately.... grinding under hard acceleration from stop.
didnt think much of it until i was at another traffic light and needed to get in the left lane so i got on it again and low and behold the vibration/grinding by my feet /trans tunnel area is present again.
this is only at low speeds/stop. havent had a chance to check anything yet, was hoping to get some insite before i put the car on the lift.
From what im reading could be diff/motor/trans mounts, checked my subframe bushings last week all looked well but with my luck as of late anything is possible.
so im out of ideas, motor mounts and all 4 bolts are good, i stuck a transmission jack and a piece of wood under the engine and lifted slowly, everything stayed in tact and started to lift the car. the rear trans mount seems ok as well, subframe bushings look ok and are tight against the frame, all bolts are there, minimal play with pry bar.
i have 1 questionable diff mount that looks like it might have a tear where the metal meets the rubber but my vibration is up front seems like .
the only other thing i can think of is the center support bushing on the drive shaft, i see no tears but the bearing is definitely sagging toward the bottom, the bushing that keeps it all together has about a 1/2" gap at 12 o clock and at 6 position 1/8" and does have a significant amount of play. I do remember my e36 M3 had a similar issue a with a TORN CSB .
Last edited by 06cls55amg; May 10, 2016 at 07:17 PM.




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Your driveshaft boot appears to be torn from the pics you uploaded. The driveshaft splines need to be lubricated properly to allow the rear section to slide back and forth easily.
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thoughts on this? http://www.ebay.com/itm/front-Center...pTl4Yx&vxp=mtr
Last edited by 06cls55amg; May 11, 2016 at 05:14 PM.
only part that is showing signs of wear and tear is the trans mount, attached pics.
with this said other than the trans mount everything looks ok, so if i reinstall all this stuff and still have a issue what is next on the list of things to check?
car has 67k on it, replaced trans filter, trans/diff fluid 15k miles ago.
also, do i need to preload the CSB or just install it in the same position as the original?
whats next? motor mounts?
Last edited by 06cls55amg; May 19, 2016 at 09:22 AM.




I read on here somewhere that 80001098 is cortico's part # for high hp. ????
that number you gave me is http://www.ebay.com/sch/i.html?_from...1098+&_sacat=0
Last edited by 06cls55amg; May 24, 2016 at 01:00 PM.




