Author Topic: metric blue head bolts in m42 (Read 3682 times)

bearsbmw · « **on:** January 26, 2009, 10:33:53 AM »

swaping my head bolts and looking for torque specs...any ideas?

1991 E30 M42 · « **Reply #1 on:** January 26, 2009, 12:13:02 PM »

I think its like 40ft/lb then 90* then another 90* but I'm not completely sure, i will check then re post once I can get to my specs

bearsbmw · « **Reply #2 on:** January 26, 2009, 12:20:51 PM »

Quote from: 1991 E30 M42;65383

I think its like 40ft/lb then 90* then another 90* but I'm not completely sure, i will check then re post once I can get to my specs

I guess it would be the same for the 94 m42 and 91 m42

nuvolarossa · « **Reply #3 on:** January 26, 2009, 12:44:56 PM »

I don't know if this help: stock head bolts torque is 30Nm (22 ft-lb) +90� +90�

1991 E30 M42 · « **Reply #4 on:** January 27, 2009, 01:28:51 AM »

i was close

KenC · « **Reply #5 on:** January 27, 2009, 01:31:03 AM »

Quote from: 1991 E30 M42;65431

i was close

40ft/lb is not close to 22ft/lb