ARP head bolts

[ali]

I just got done putting my head on and I just want to know how much did you guys torque your heads down. I torqued mine to 75lb with ARP lube.

 

[pj91gsx]

I was reading some people did 85 and some did 90 and 95. I would do that much, wait until someone chimes in. Im not sure.

 

[dsmpat95]

i did mine to 85. And you could of try a search and found what you were looking for by the way.

 

[xi Talon ix]

ARP says to torque them to 85 ft/lbs with the moly lube or 115? with motor oil.

 

[cbrfrenzie]

81 ft-lbs using the ARP molly lube, as per the ARP instruction sheet that came with my head studs. If you're using 30w motor oil torque to 100 ft-lbs.

I torqued mine to 81 ft-lbs initially with the ARP molly lube, then after heat cycling the engine several times I re-torqued them to 85 ft-lbs.

You can go more, as these specs are to 75% of the yield strength of the bolts. You can torque them tighter, but with the use of that molly lube, I see no need to go above 90 ft-lts. On the other hand, if you're using 30w motor oil for lube, then I would do an initial torque of 100 ft-lbs, then re-torque to 105 - 110 ft-lbs.

Also, measure the total length of the bolts and document them such that you can correlate the lengths to each individual stud. Every time you take the head off, re-measure and compare and that will give you an idea of how much your bolts stretched from torquing.

 

[Tarantula]

I did them at 87 ft lbs with the moly lube that comes with the ARP bolts. I also did them 5 times in sequence.

 

[ali]

so really somewhere between 80 to 90lbs

 

[eclipsetuner_21]

I also torqued mine to 80 ft-lbs with the ARP molly lube, then after heat cycling I re-torqued them to 85 ft-lbs. Do this and it will be good to go...

 

[ali]

Sounds good thanks guys

 

[SonySlave]

I burned a valve last summer and rebuilt the head, put in a new OEM headgasket, and ARPs. No copper spray. I used the ARP moly lube and torqued in steps 10, 20, 30, etc... up to 80. Then I started pushing coolant. So I torqued them all to 100 and haven't pushed a drop of coolant since at 25-30psi on my PTE 50-trim.

 

[Tarantula]

I have gone up to 30 psi on my FP3052 and my engine is still stout on 87 ft lbs. I too used Stock composite gasket. I washed the engine block surface and head surface with lots of acetone before I put it together to make sure theres no oil slick areas. I wanted the composite sticky material to stick.