head bolt torque? asap?

Coupe50h · 03-16-2003, 01:47 PM

Guys i have one head on so far, gt-40 iron, arp bolts? 80ft lbs?

Technick · 03-16-2003, 04:13 PM

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.

Coupe50h · 03-16-2003, 06:59 PM

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

also using aluminum heads it's less, forgot how much.....

03-16-2003, 01:47 PM	#1
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	head bolt torque? asap? Guys i have one head on so far, gt-40 iron, arp bolts? 80ft lbs? __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

03-16-2003, 04:13 PM	#2
Technick Registered Member Join Date: Feb 2003 Location: Seattle, Wa. Posts: 175	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. __________________ No matter how much you spend, or how much you prepare, there is ALWAYS someone else faster or quicker than YOU!!!!!!!!!!

03-16-2003, 06:59 PM	#3
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	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 also using aluminum heads it's less, forgot how much..... __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

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