I have had the head off my RR urquattro to fit a new head gasket and cambelt and am now ready to torque up the crank pulley/harmonic balancer bolt. 450nm of torque is way beyond the maximum of my torque wrench and I don't have access to a larger one. I could fabricate a torque extender but I think my torque wrench would break in this situation.
As an alternative method of torquing up the bolt I have read that Audi issued a bulletin 10/93 for the ABY/AAN stating that 150nm + 180 degrees was acceptable. Since the RR and ABY/AAN bolt is the same part number, would this method be OK for the RR? My torque wrench will do 150nm and I have a 3/4 drive socket set and long bar to turn the extra 180 degrees. I also read that this is a common method used by quite a few other manufacturers.
Has anyone else used 150nm + 180* on an RR or 3B?
Any advice would be greatly appreciated.
Rex
As an alternative method of torquing up the bolt I have read that Audi issued a bulletin 10/93 for the ABY/AAN stating that 150nm + 180 degrees was acceptable. Since the RR and ABY/AAN bolt is the same part number, would this method be OK for the RR? My torque wrench will do 150nm and I have a 3/4 drive socket set and long bar to turn the extra 180 degrees. I also read that this is a common method used by quite a few other manufacturers.
Has anyone else used 150nm + 180* on an RR or 3B?
Any advice would be greatly appreciated.
Rex
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