Need help with these ARP Studs

Obsessionw/Boost

New Member
Sep 28, 2006
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Albany, NY
I'm having some real trouble with these studs because I don't know what to do. I have ARP Head Studs. My friend is telling me that you have to torque the studs into the block, then the head and washers, then the nut, and then you torque. I've read numerous threads on doing the HG, and I haven't seen one that says you torque the studs into the block.
He used ARP Undercut studs on his.
Can someone please tell me the difference between regular ARP studs, and the ARP Undercut studs. I really don't understand.

I am doing the job according to this:
http://www.supramania.com/forums/showthread.php?t=38956
It doesn't mention torqueing the studs into the block. It says to lay your gasket first, line up everything, slide the head on and line up the holes. Then apply the moly lube to both sides of the stud, and insert the stud with the washer down through the head and into the block.

I thought you didn't need to torque the studs into the block, I just thought they were supposed to be finger tight.

Everyone who knows something on this topic, please help.
-Ryan
 

Nick M

Black Rifles Matter
Sep 9, 2005
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Torque means force in a rotating motion. Even with your fingers, you are applying torque. Just not a lot. Tighten them to how tight your spec sheet says from ARP.
 

suprahooked

Built 7M
Jun 20, 2006
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Put your head on ,lay the washers in , moly both ends of studs and run them in finger tight then slighty snug with allen wrench. Then install the nuts and torque to arp specs which iirc is 80 ft lbs.
 

Obsessionw/Boost

New Member
Sep 28, 2006
198
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Albany, NY
Thanks alot guys. This helped me out alot. I'm going to get started now.
Btw, does anyone know the difference between undercut studs and regular studs.
Thanks,

-Ryan
 

GrimJack

Administrator
Dec 31, 1969
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Google is your friend. :D
You will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the "stretch" of both studs, which makes for a more consistent clamping force - and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing!