ARP head studs

Re: ARP head studs (Kook)

Sun, 28 Jan 2018 08:09:19 GMT

Yeah, ft/lb is what I meant sorry

Re: ARP head studs (Falcon)

Sun, 28 Jan 2018 08:04:27 GMT

Don't know whether you are trying to retorque or have head off but you appear to be confusing or interposing
NM. and FT/LB.

Re: ARP head studs (MCT_MR2)

Sat, 27 Jan 2018 21:32:08 GMT

I measure the heights of the studs, to double check they are all installed correctly. Usually arp specifys a final torque, but request you reach that torque on the third pass (ie. 20nm, 40nm, and then 65nm)

Loosening and retightening is not done with arp fasteners. That is a common pre torque method on torque to yield bolts and with some head gaskets.

Re: ARP head studs (Kook)

Sat, 27 Jan 2018 17:35:40 GMT

I was told to tighten then loosen then tighten to 65nm.

But looking on their instructions is says just tighten to 65nm

Also noticed the bgb and their instructions have different install orders

Re: ARP head studs (Falcon)

Sat, 27 Jan 2018 17:33:37 GMT

I have a little more time now. It's good practise to check the threads in the block to see that they are all clean.
No don't put a thread tap through them. I count the turns the stud goes down so they are all in an equal depth
when seated just firmly by hand. If I remember correctly I think it was sixteen turns.
Use the correct assembly grease on the threads and the clamping surfaces.
Do you know the correct procedure with the torque wrench ?

Re: ARP head studs (Kook)

Sat, 27 Jan 2018 17:02:23 GMT

Yup, regret posting this before hunting them down haha.

Hand tight only...

Re: ARP head studs (Falcon)

Sat, 27 Jan 2018 16:06:51 GMT

NO, NO. STOP. Fer gawd sake. Read the destructions first.

ARP head studs (Kook)

Sat, 27 Jan 2018 15:52:17 GMT

Hey,

Just wondering if anyone can confirm for me if the stud needs to be torqued to 65nm as well as the nut or just the nut?

Asking because I've now snapped 3 bits trying to torq the stud to 65 (SCA/Holton/Kincrome).

I can't afford to keep buying new ones...

Thanks