Author Topic: Need bolt torque specs  (Read 965 times)

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Offline Usedknobby

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Need bolt torque specs
« on: December 29, 2024, 10:08:39 PM »
Torque specs for 100 TMX head, cylinder bolts?

Offline TMX_Maverick

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Re: Need bolt torque specs
« Reply #1 on: January 01, 2025, 12:17:28 PM »
There are some posts and downloads regarding this on the site.
I believe the late, great Graham Weeks (the original member username "disc_valve") recommended 7 foot-pounds of torque. Rockford Service Letter BSG-0066 (within the downloadable service letters on this site), regarding "REPAIR STUDS," says to torque the regular cylinder head nuts to 125 INCH-pounds (approx. 10.4 foot-pounds) for the 100 Sport, 100GP and 100 TMX.
Bottom line, you'll be safe to use 7-10 foot-pounds.

Offline CL-100

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Re: Need bolt torque specs
« Reply #2 on: January 05, 2025, 06:24:01 AM »
I have a service manual for a 175 engine that specifies that 8mm fasteners are torqued at 120 inch pounds and 6mm fasteners at 60 inch pounds.  Notice that this is INCH POUNDS, not foot pounds.

I have been using these specs for years without any problems.
« Last Edit: January 05, 2025, 06:27:14 AM by CL-100 »

 


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