Quote:
Originally Posted by gaz_ball
8.8/10.9 relates to the bolt material ultimate & yield strength, not hardness.
I would say if you have ZNS coated bolts you need to use the ZNS specific tightening spec.
Are the torque specs for the gearbox-to-engine bolts the same as the torque specs for the dmf/clutch bolts for a specific size & grade (non ZNS coated)?
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Pressure Plate M8 8.8=24Nm 10.9=34Nm ZNS spec available
Gearbox-Engine M8 Hex=25Nm Torx=22Nm ZNS spec not available
But according to realoem some bolts are ZNS:
https://www.realoem.com/bmw/enUS/sho...diagId=23_1034