335i Mfactory LSD

Daven54

Lurker
May 20, 2019
11
Hey guys i was just wondering if anyone has notice if they have gotten a clunk when putting the car in gear and when changing gears, i also have a bms diff brace
 

Jeffman

Captain
Jan 7, 2017
1,073
I noticed a clunk when going from P to D or R and starting to roll. I suspected (correctly) that the origin of the clunk was in my brakes and it disappeared after I tightened up and lubricated my calipers when I installed new rotors and pads.
 
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Panzerfaust

Lieutenant
Jul 3, 2018
504
Chicago
I believe certain kinds of clunks can also be caused by very worn bushings as well, especially if going from driving one direction to another (D>R, N>D, R>D etc) due to the diff shifting slightly when the load changes.
 

ShocknAwe

Lieutenant
Jan 24, 2018
636
SC
Normal in a manual car for a LSD to clunk when going from neutral to first or from R to first or vice versa.

Dunno about auto.
 

doublespaces

Administrator
Oct 18, 2016
7,334
AZ
I get a clunk, but it sounds like my brakes and I'm pretty sure it is. I have AKG black diff mounts and an MFactory lsd. I have F30 brembo kit in back and its not 100% so I can't imagine it is anything else.
 

scrllock

Specialist
Dec 17, 2018
74
Did you get a full pumpkin or install a new diff into your carrier? If the latter, did you have your shim/bearing done properly?
 

Jeffman

Captain
Jan 7, 2017
1,073
I get a clunk, but it sounds like my brakes and I'm pretty sure it is. I have AKG black diff mounts and an MFactory lsd. I have F30 brembo kit in back and its not 100% so I can't imagine it is anything else.
When was the last time you worked on your brakes? I had a loose caliper which caused my clunk.
 

Jeffman

Captain
Jan 7, 2017
1,073
My brakes had been untouched for about four years when my clunk developed. You’re probably still good in this regard.
 

Daven54

Lurker
May 20, 2019
11
Did you get a full pumpkin or install a new diff into your carrier? If the latter, did you have your shim/bearing done properly?
i got a performance shop to install the lid into the carrier and i installed the pumpkin into my car but i replaced all the bearings and provided all new shims, i was wondering if its the differential brace that is causing me to notice the clunk. Im going to remove it and see if i can still hear or feel the clunk. Also i don't hear or feel any whine or gear noise when accelerating or decelerating
 
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