torque setting for exhaust pipe clamp bols

Started by gwilki, May 27, 2021, 12:17:51 PM

Previous topic - Next topic

gwilki

Tks again for your help, Chief. All are tightened and no broken studs. I guess that's a good indication of success.

Take care.


chief

Quote from: gwilki on May 27, 2021, 18:06:47 PM

Thank you, chief. I saw 61 inch pounds, which is just over 5 foot pounds,  for the clamp holding the heat shield to the pipe, but not for the actual pipe clamp to the head. After posting the question, I found another source that showed 13 foot pounds - quite a variance. I'll do as you suggest and start low and work up. I must admit that 5 foot pounds seems awfully small to me, even for that size stud.

I agree, I think the 61 in-lbs is a starting point and not a final torque spec. 

The torque spec for a 8mm bolt/nut is 10-13.5 ft-lbs. Since we are dealing with a crush washer, the lower end of that scale is likely the best... and 10 is the spec HD advises. They also specify a torque pattern and starting with 9-18 in-lbs working up to a final torque of 100-120 in-lbs.

Slainte mhaith - Good Health - Cheers

'02 Vulcan Drifter 1500

gwilki

Thank you, chief. I saw 61 inch pounds, which is just over 5 foot pounds,  for the clamp holding the heat shield to the pipe, but not for the actual pipe clamp to the head. After posting the question, I found another source that showed 13 foot pounds - quite a variance. I'll do as you suggest and start low and work up. I must admit that 5 foot pounds seems awfully small to me, even for that size stud.


chief

With the exhaust nuts(because of the crush gasket) you want to tighten them evenly and snuggly, but not over tighten. Since gaskets may vary, I tighten mine snug, until the gasket is crushed then use 61 in-lbs. I ride and check them again. Kaw mechanics have confirmed the 61 in-lb number according to some of our members. (I've heard 12-14 ft-lbs too... but I tend to be conservative and go with the lower number and work up. )

Anyway, that should get you started.

Slainte mhaith - Good Health - Cheers

'02 Vulcan Drifter 1500

gwilki

I have the service manual. It shows torque settings for the two muffler bolts and even for the clamp that holds the heat shields on. It does not have a torque setting for the four nuts holding the pipes to the head.

Can someone please tell me what this setting is?


SMF spam blocked by CleanTalk