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170i Exhaust nut torque?

Posted: Fri Dec 15, 2017 5:08 pm
by GregsBuddy
Hello,

The subject line says it all. I've scoured the manual and do not see a specific torque for the acorn nuts fastening the exhaust to the engine. There's a general torque spec' for different size bolts, but no specific torque for these nuts.
Lost one of these nuts in the last 3,000 miles, so I want to be certain to torque the exhaust correctly this time. I was considering drilling and wiring the nuts but then it would be more difficult to work on it if I needed to do something on the road requiring the exhaust's removal.
Thanks!

Posted: Sun Dec 17, 2017 6:12 pm
by DeeDee
I don't use a torque wrench on those. I tighten them snug and go about a bit past. Most torque wrenches are fairly long. If a loud noise keeps you from hearing the click, and it's fairly easy to sheer off the stud. If you want to torque them, I believe the spec is 11/ftlbs

Posted: Mon Dec 18, 2017 1:06 am
by Christophers
DeeDee wrote:I don't use a torque wrench on those. I tighten them snug and go about a bit past. Most torque wrenches are fairly long. If a loud noise keeps you from hearing the click, and it's fairly easy to sheer off the stud. If you want to torque them, I believe the spec is 11/ftlbs
I agree.