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Old 03-18-2011, 03:15 PM   #9
Ol' Ron
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Join Date: May 2010
Location: Chester Vt
Posts: 8,840
Default Re: Bolts instead of Stud's?

The rule of thumb is a Diameter ans a half the main bolts are 1/2 -13 so that works out to about 9 threads min. Check for bottoming use a flat washer not a lock washer torque to 95/ ft/lbs. I don't use studs for heads either, use a grad 5 bolt with a min fof 7 threads and torque to 45 ft/lbs. I'm not saying this is the only way to do this, just the way I did it for years. Also re torque head bolts afte at least 3 heat cycles
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