Engine bolts torques

[Henry's Lady's Man]

I know it's come up before. Does anyone have a chart for proper torques on engine bolts? What I really need is the torque for the timing cover bolts. Les Andrews left this one out of his chart on page 1-134. I'm figuring 30 or 40 lbs? these are 9/16 bolts.

 

[lindy williams]

The timing cover bolts are 3/8-16. The maximum torque for this size bolt of grade 5 and thread is 39 lb.ft. So 35-40 would be appropriate.

 

[Henry's Lady's Man]

Thanks

 

[BILL WILLIAMSON]

Some timing cover bolt holes extend into the timing gear areas. Put #2 PERMATEX on those bolt threads, or oil will spiral around those threads & LEAK out from the lockwasher slit!
Bill Drip

 

[H. L. Chauvin]

Mr. Andrews has a detailed "Bolt-Grade/Torque Comparison Chart" for different SAE grades of bolts, with different threads per inch, at the very end of his Handbook, (in the Appendix, page A-4), with torque reduction percentage amounts for commonly used Model A lubricants.