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DISCUSSION => Swaps, Turbos, Buildups => Topic started by: bearsbmw on January 26, 2009, 10:33:53 AM

Title: metric blue head bolts in m42
Post by: bearsbmw on January 26, 2009, 10:33:53 AM

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

Title: metric blue head bolts in m42
Post by: 1991 E30 M42 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

Title: metric blue head bolts in m42
Post by: bearsbmw 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

Title: metric blue head bolts in m42
Post by: nuvolarossa 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°

Title: metric blue head bolts in m42
Post by: 1991 E30 M42 on January 27, 2009, 01:28:51 AM

i was close

Title: metric blue head bolts in m42
Post by: KenC 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