arp head stud procedure
#1
arp head stud procedure
hello, i am in the process of putting together my motor..i am going to install my heads with my arp studs here in a little while..problem is i dont have any instructions on what toruqe to install them to..i searched and searched and no one gave the same answers twice so now i am really confused.. i dont know if its the same as the tty bolts or not..No one seemed to agree on what to torque them to..i need the specs on the big and small bolts.. i assume you torque them in the same sequence you would the regular bolts? also, i bought the shortblock used and the studs were already in the block..so yes they are extrememly tight from being torqued dowm already..should i loosen them all up to "hand tight" before reinstallation or should i just stick the nuts on and go..Also heard i will have to retorqe them after the car is hot..is this true? this will be a pain considering i will have to take the coil packs and stuff loose...a couple of more quick quesitons..will oreilly's have some good moly lube for the nuts or should i just use oil? Also i am planning on useing some copper spray on my cometics..good choice or no? Sorry so many questions..
thanks in advance
matt
thanks in advance
matt
#2
To start, the studs shouldn't be torqued into the block. So yes, loosen them up and only hand tighten them into the block. I use a little oil on the block side. I would try to find ARP's moly lube for the other side because that's what they recommend for the studs. Next I would only use the GM gaskets IMO and no extra goo or silicone or spray. As for torque use the standard sequence as the bolts. I did three passes 30ft-lbs, then 50 then 70 and then 22ft-lbs for the smaller bolts. I haven't re-torqued them since the install and all is well.
#3
Originally Posted by technical
To start, the studs shouldn't be torqued into the block. So yes, loosen them up and only hand tighten them into the block. I use a little oil on the block side. I would try to find ARP's moly lube for the other side because that's what they recommend for the studs. Next I would only use the GM gaskets IMO and no extra goo or silicone or spray. As for torque use the standard sequence as the bolts. I did three passes 30ft-lbs, then 50 then 70 and then 22ft-lbs for the smaller bolts. I haven't re-torqued them since the install and all is well.
#4
Technical's process is real close to mine and the ARP instrucions say 65ftlb but I tourqed mine to 70ftlbs like most and the top ones to 25ftlb that is what MTI told me they were doing so just wanted to give you my personal specs any way.
#5
I used a small amount of loctite on my studs. They kept coming loose when I did my retorque.
And I retorqued my setup 3 seperate times to 30/50/70 on the large nuts and 15/30 on the small ...
I used Cometics ...
And I retorqued my setup 3 seperate times to 30/50/70 on the large nuts and 15/30 on the small ...
I used Cometics ...
Trending Topics
#9
I think they quit putting them in there because they were to generic. They just told you to tourque them down to 65ftlbs, but did not tell you that the smaller ones only get @25ftlbs. So a lot of people were complaining about striping the smaller studs etc...