Author Topic: Engine case torque specs?  (Read 716 times)

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Offline SRG

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Engine case torque specs?
« on: January 15, 2020, 01:08:53 AM »
I'm having a difficult time finding torque specs for the case bolts on my panhead engine. One friend said 50 ft lbs, but that's really putting the squeeze on. I'm looking in five books, and I still can't find the specs.

Offline Buglet

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Re: Engine case torque specs?
« Reply #1 on: January 15, 2020, 05:33:20 AM »
   Should be between 15 - 17 ft lbs.

Offline rigidthumper

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Re: Engine case torque specs?
« Reply #2 on: January 15, 2020, 11:03:18 AM »
Rule of thumb an old timer shared with me 50 years ago-7-9 foot pounds for 1/4, 17-19 for 5/16, 27-29 for 3/8, etc- add 10 pounds for each 1/8" increase in bolt diameter.
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Offline SRG

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Re: Engine case torque specs?
« Reply #3 on: January 16, 2020, 01:21:05 AM »
Thanks guys. 17 ft.lbs. it will be. Good info on torques for different bolt sizes.