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Re: Super A torque pattern
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Posted by El Toro on December 26, 2004 at 09:55:46 from (216.148.246.154):
In Reply to: Super A torque pattern posted by Greg-N-CA on December 26, 2004 at 08:32:40:
Hi Greg, To torque down your head bolts start in the center of the head and tighten the bolts with a speed handle or ratchet until the nuts or bolts are snug. Use a criss-crossing pattern as you tighten in both directions. Then use your torque wrench to tighten using the same criss-crossing pattern. Start at 20-ftlbs and use 15 0r 20lb increments until you reach the max torque. That max torque is 65-ftlbs in my manual and that is what I used when I restored my A. I never had any leakage problems. I did retorque after heating up the engine. Some manuals say 80-ftlbs for those heads. When I removed a head I always used a breakdown bar to back off the nuts or bolts slightly, then I would use a ratchet to loosen in increments until the head bolts or nuts were free. I usually used an electric impact wrench to spin them off. Check the head with a straight edge to see if you have any warpage. A machine shop usually does this and will magna-flux for cracks. If the exhaust valves are thin I would replace them and if the seats are deep, I 'd have new valve seats installed and guides too. Hal
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