Re-torquing ARP headstuds

[MustGoFaster]

I assume you are using the right TQ spec? They are different for which type of lube you use. You can also try a slightly higher torque. We found it effective on Josh's car at delaying head gasket failure to a higher HP level.

You may want to lossen the nuts up and take them off just so you can besure they are nice an lubed up.

[4g63tcrazy]

When you retorque them you leave them tight and just go over them again. It's just to make sure non of them came loose. I had my two middle ones come just a little loose on me when i retorqued mine. You can retorque them as many times as you want also. But when you re-use them you will probably want to torque them a bit higher then last time since standard ARP's are torque-to-yeild bolts.

[desolate]

I have my regular arps torqued to 110ft lbs with an autozone composite hg (felpro) w/copperspray.

Doing 33psi spike(16g) and 35psi(scm61) with no hint of coolant pushing. I know that's higher than what arp rates them for but it has worked great for me. This is with molylube as well. I used to stop at 100ft lbs but I always had leaking issues, the day I decided to go 110ft lbs was the day my high boost coolant push issues were gone.

And then the day I start to push coolant on this setup is when I'll go with L19s.

[Kracka]

When you retorque them you leave them tight and just go over them again. It's just to make sure non of them came loose. I had my two middle ones come just a little loose on me when i retorqued mine. You can retorque them as many times as you want also. But when you re-use them you will probably want to torque them a bit higher then last time since standard ARP's are torque-to-yeild bolts.
TTY should not be reused even when torquing higher i.e. stretching further. I thought ARP's were not TTY which was one of their major advantages over OEM replacements?

[FattyBoomBatty]

When I called ARP, they said you can measure the bolts to check for stretch, but it would only work if you measured them when they were new, then took them all out and did it again, but he said it won't be a problem to reuse them if they were fine.

[4g63tcrazy]

TTY should not be reused even when torquing higher i.e. stretching further. I thought ARP's were not TTY which was one of their major advantages over OEM replacements?

Let me find a link for you real quick. They are TTY and the stock 1g bolts are actually stronger than standard ARP's too.

[4g63tcrazy]

Here is the link I believe.. The real info starts getting good on page 2.

http://www.dsmtalk.com/forums/showthread.php?t=182453&highlight=arp+stretch

[Shane@DBPerformance]

Heres how you do it... Buy some L19s from me, remove the head, put in a new HG without copper spray, and torque to spec.

[4g63tcrazy]

..free of charge. :)

[scheides]

I can't believe I'm looking at these L19 headstuds for my car, what a joke. Standard arps should be just fine?!?! Does Arp make L19's as well, or is A1 the only company?

http://www.maperformance.com/a1-technologies-h11-l19-extreme-duty-head-studs-7-bolt-evo.html