I'm going to install ARP head studs in my 01 HO truck on Saturday. I've got a set of BD twins to follow after that. I ordered a bottoming tap from ARP and their assembly lube for the install. One of the guys who will be helping me asked me how will we get the tap out without pulling the head. Obviously one of the reasons to install the studs is so I don't have to pull the head so I thought that was a fair question (don't know what the tap looks like yet, it is on order). I'm not sure how long it is to see if it will come out easily. Anyway, another question is ARP is saying 120 ft lbs if you use oil as the lube and 191-195 ft lbs if you use their assembly lube. Does this sound right? Any experience anyone has that can offer some assisstance is appreciated. BTW, thanks to Joe Farmer for the torque sequence on another post.

Thanks in advance for the help, Matt

 

96 with ARP lube or 122 with oil.

Dont exceed 122. Many have but some have broken past that.

I use 122 myself, with lube. TQ them slowly.

Don~

 

Matt give me a call when you are doing the job. There is a few tips I can help with. Trying to get ready for the 22nd? Tim

 

Yessir, I am. I hopefully will be able to get the studs in and the twins on. I hope I got everything I need ordered. I've got about 3 ups red packages coming tomorrow. Thanks for the offer Tim, I'll give you a ring. Mikey gave me a few tips you suggested to him earlier. Looks like he and I both have our work cut out for us on Saturday.

Don, thanks for that input too. I was very nervous about the 191-195 ft lb spec from tech support at ARP. I've heard that some have broken if you go above 120 or so.

Anyone know about whether their will be an issue getting the tap out or not? It may make more sense after I see it.

Thanks again, Matt

 

So go less with the ARP lube than with oil? Hmmm, they told me to go more with the lube. Of course, they also told me to do 191-195.....I knew that sounded way wrong. Should I not have bought the lube Don?

 

Hmmmm, this torque spec has me wondering now. Maybe they said 120 with oil and 91-95 with lube and not 191-195. That would be pretty close to what you are suggesting Don.

 

Who got predictions for Matt's truck on the dyno? I call 425/930

 

My roommate did 402 with a drag and 1.5's and a super b so I say 420 would be about right with twins.

 

I'll take 455/976.

Use the ARP moly and torque to 122.

brnadon.

 

That would be a good #! I'd love to see 455. I'd also like to see a 4 digit # on torque, but I can build to that. I've got a TST pm3 sitting on the shelf. I want to run the Edge Comp first with the twins since it is installed already. Then I'll change out later to the TST (switch the Smarty to doing the timing) and see what kind of difference it makes. Just want to get a baseline with the Comp first.

 

The 3 UPS red packages showed up this morning. The one from ARP had the torque instructions in there. It agreed with Don M., 122 for 30 weight motor oil, or 96 ft lbs with the ARP Moly Assy lube. The tap doesn't look like anything special, especially for what I payed for it. Now I'm wondering if it will thread out enough to get it out....it is short.

 

Don,
Given your previous test of ARP studs at various torque's, I'm surprised at your advice at stopping at 122. Is it because of information within the email of going to twins and future cylinder pressures?

 

Well Don's suggestion of specs turned out to be exactly what was on the ARP instructions for torque. Must be tested. I'll say this, I don't exactly understand why the tq spec using their lube would be less than with motor oil....I do have a theory....as much as my simpleton mind can imagine anyway. Any explanations of the difference in spec would be appreciated.

Thanks, Matt

 

Less friction with the ARP lube than motor oil. This means it'll take less torque to stretch the bolt the same amount. Trust ARP. They know.
Hope this makes sense.

 

Matt,

Do you see what I am talking about now??