ARP Head Studs

[GangsterMD]

What's with the nut on these studs? It seems to be 14 mm but it doesn't fit really good. Feels like it won't take 80 ft lbs? Do I need a 12 pt. 14 mm socket?

 

[TURBOTWIN2]

I have ARP part number 123-4203, 12 point nuts. 1/2" 12 point socket fits perfectly. HTH.

 

[GangsterMD]

Ahhh....that makes sense.
Thanks

 

[TURBOTWIN2]

I found that a 14mm 6 point socket fit the nut loosely, ALMOST worked!

 

[MichBC3]

Stud Installation

I am considering installing a set of head studs. When you install the stud in the block, how tight should it be? Finger tight? Vise grip tight?

I've seen a special off-set tool that can grip studs from the side to twist them in using a ratchet or torque wrench. But you can't really torque them to a spec. using this tool.

After installation of the head, does the torque placed on the top nut insure that the stud thread grip forces are correct?

 

[pacecarta]

new arp studs have an allen hex in the end of the stud (think its 1/4" allen , just twist the studs down to the end of threads with sealer and tighten using a small allen wrench , makes getting them out easier too making headgasket changes possible without pulling the motor even with a/c

 

[MichBC3]

Head Studs

Thanks much. I've been wondering about this for years. Maybe I'll go this way.

All the best, Bob

 

[Just a Six??]

Read this info. Works great!
TurboBuicks.com - Head Studs That Don't Leak!

 

[MichBC3]

Head Studs

More info is always better. Lots of good tips there. Thanks!