I'm seeing inconsistencies with ARP instructions. I was told the torque for the nuts is 80ftlbs, but someone a while ago said the torque was less for an Aluminum block. Does anyone have their instructions handy?

ARP website doesnt have specific instructions for 234-4317, they seem to be general.

 

wHAT HEAD GASKETS?

 

Mls gm

 

You went here and typed in the part number? This pulls up a PDF sheet for those studs. I don't believe the torque factor will be any different for steel vs aluminum heads and/or blocks...

 

Yes, I did look there. But like I said, I read an old thread where someone said their actual instructions showed a lower torque for aluminum because of the expansion rate.

 

These are correct and current:

 

I torqued a stud to 80lb and stripped a thread in my block a few months ago and had to order that Kent Moore repair kit. I had spent 2 days prior cleaning those threads in the block.

I have only my studs torqued to 72lbs ft.

 

Ahh man! Thats scary!

 

Surely you weren't torquing the stud into the block, right? The studs go in finger-tight. If you pulled the block threads while torquing the NUT to 80 ft-lbs, either your wrench was off or the threads were weak.

 

If you cleaned those threads with a tap, verses a cleanup tool, you were removing metal. 2 days worth of cleaning...yikes.

 

I placed all the studs in finger tight and I was torquing the nut on the stud. Torque Wrench was brand new and already calibrated. Either way, I felt more comfortable torquing to 72ft-lbs than 80 afterwards.

My sole purpose for purchasing the Studs were to aviod a stripped thread inicident, but it stripped anyway

 

Cleaned the threads with a chaser from arp.

I used a vaccum with a straw on the end to suck the coolant out the holes, then I used an air compressor to blow out the holes, then I used twisted papers towels to clean the bolt holes, then I used a .45 bore caliber brush to clean the holes, then I blew them out with compressed air again and then I ran a chaser down each hole. I used a flashlight while cleaning to make sure there was absolutely no crud in there, in which I was very meticulous and the entire process was very time consuming as I spent 2 days (4hrs each day) cleaning those bolt holes.