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head bolt torque? asap?
Guys i have one head on so far, gt-40 iron, arp bolts? 80ft lbs?
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With the ARP lube on the threads and under the head of the bolt? Then 70 lb/ft torque should be O.K. Are the threads in the block clean? Did you run a thread cleaner down all of the bolt holes (not tap, but cleaner/chaser)? If everything is squeeky clean according to ARP if using ARP lube you have to lessen the torque used from spec by about 10-15%. A lot of times an improper torque reading can be obtained by the resistance of the threads of the bolt twisting against dirty threads in the block and resulting in a torque reading that is not the true clamping torque of the bolt. The directions should have been in the box with the ARP bolts.
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Thanx, arp suggest 85 ft lb, using motor oil on the threads, with their sealer it is less like 65 lbs, i used permatex thread sealer on the lowers and motor oil on the uppers, i just torqued them all to 85 lbs, i posted this before i read the arp directions...oops:o
also using aluminum heads it's less, forgot how much..... |
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