So I have been reassembling a built motor with the driftspeed video

[filluptieu]

And using the arp head studs they say to go up to 70 and it seems like alot of people on the forum say 85? I know the guy doing it is a pro but still wanted a second opinion.

[801nismo104]

the head studs should of came with a paper that tells you how to install them and torque specs. i torqued mine down to 80ft lbs iirc

[91ka24]

Just do what the instructions tell u.

[ForeignMuscle]

ARP sheet said 80ft/lbs when I installed mine.

[Davidna2fi]

If this is your first time using a set of fresh ARPs, tighten them, loosen them at least 3 times, put a paint mark the first time and you'll see how many more turns you'll get. ARPs do stretch a little, but it'll help if they don't stretch over time.

[zo0d]

To qoute a user from another forum:

"i'm sure the arp's studs don't care much about anything. i had 2 machinist tell me that if you going to use the arps and torque them to arp specs, the main caps will bend or deform slightly to where the bearing clearance will be too tight. thats exactly what happened to me, crank would not turn. use factory bolts at factory torque spec, all is good. just saying don't spend the extra 100 on arp mains unless your ready to spend the extra 200 to line hone the mains."