What did you Torque your ARP Head Studs to?
05-10-2015, 01:07 PM
#21
Cpt. Slow
iTrader: (25)
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 14,175
Total Cats: 1,129
It undoubtabley is an over torque problem. But the earlier sets of head studs we're going out with a recommended 80ft/lbs. They now say that's for 7/16 studs, we have 10mm studs afaik, and those instructions say 60ft/lbs.
Reply
0
0
05-10-2015, 01:18 PM
#22
Junior Member
Join Date: May 2008
Location: Grants Pass, OR.
Posts: 488
Total Cats: 17
That was several years ago and the instructions were 80#. I just use OEM washers as that is what the head was designed for. Not saying there is an issue with the ARP washers at 65# but I know for sure there isn't going to be one with the OEM's and They well spread the load out more on the boss.
Reply
0
0
05-10-2015, 03:21 PM
#23
SADFab Destructive Testing Engineer
iTrader: (5)
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,642
Total Cats: 1,866
There is a post somewhere that talks about how there was a guy at ARP who designed the studs in conjunction with FM and they used to have a 65ft/lb torque instruction. Said designer also apparently no longer works there and yadayada, someone else should link to it, I'm on mobile.
Reply
0
0
Thread
Thread Starter
Forum
Replies
Last Post
