ARP Head studs / Retork or not.

[eracers999]

Thoughts and opinions please. You cant retorq a stretch bolt but you shure can the ARP head studs. Wondering if it is worth the time.

Kent

[5.7L oldsdiesel]

With ARP studs,many people that have used them say that you should torque to the ARP recommendation and then loosen and retorque the same fastener 5 times for proper stretch of the fastener.

I have a set of ARP connecting rod bolts and the instructions say to do the same thing.

[JeepSJ]

They are designed to be reused.

[tom.mcinerney]

I torque heads over the span of many hours, or a couple days, if convenient. If you torqued within an hour and the heads or deck surface wasn't good then maybe yes. Given ARPs i might after 20K-100K miles even if all flat....might restore some tension.

On wimpy aluminum heads of VW rabbit diesel (early '80's) using stretch/TTY bolts, the recommendation was a retorquing after 10K Mi. But those gaskets were softer than the Felpro crushing ring on the 6.5Ls. I am impressed by the nice flat rigidity of the head castings.