M54 main bearing help.

Post Thu Jan 07, 2016 9:58 pm

Hi all I'm wondering what big end baring brand I should use, the dealers are asking £350! For a set

Post Thu Jan 07, 2016 10:19 pm

Glyco is OEM iirc. ACL have a very good rep but are expensive.

Post Thu Jan 07, 2016 11:39 pm

Sorry I meant the mains bearings and m54

My main shells have KS on them. Question is which brand of make to go for??

Post Fri Jan 08, 2016 1:40 am

Motorhole wrote:Glyco is OEM iirc. ACL have a very good rep but are expensive.

+1 90.25 USD from Pelican Parts (Glyco)

http://www.e30zone.net/modules.php?name ... &p=2883547

or 131.32 USD from Schmiedman, The product is unoriginal, but in OE quality

http://www.schmiedmann.com/3_series/E46 ... tm#1937500

Post Wed Jan 20, 2016 9:05 pm

KS is kolbenschmidt.

Nicest ones I have used were AE/federalmogul but to be fair KING bearings have proven to do exactly the same job in M20s with no difference.

Due to having 7 main bearings BMW engines don't need heavy duty race bearings on the crank until things arereally stressed. The bearing area is huge something like 1.3x what a big block chevy has.

Any standard bearing that has proper clearance and is designed for a hardened crank will be fine for a normal or mild build.

Edit - just did some googling and GLYCO are king, and AE, and ACL and Tarabusi and Federal mogul.
So take your pick, there all from the same company now.