Quote Originally Posted by Ross View Post
I suspect both sizes were used, T50 and T60. My experience was on a '94 530 employing the T50 bolt heads.
For the amount of torque required to break mine loose a larger tool would have been desireable. It took a brand new BMW tool, valve grinding paste and very powerful impact gun to remove two of the bolts. Mine was a replacement Alusil engine so not a factory installation and perhaps overtightened by some mechanic.
Contrary to how my car was equipped every published source indicated a T60 size, including the BMW service tool catalog.
Ross, I'm suspecting that the 530 and 540 use very different flywheels... did your 530 have a dual mass flywheel in it? I'm going to do some rummaging around now and find out if there's some differences, will report back!