You's guys with head studs

[RacerX11]

So did we figure out what PSI rating these studs are?

Like I said I saw on a DSM website the ATP5.4LU used as a corner stud for a head, and they said that ALL bolts must be torqued to 71 ftlbs using ARP lube... so I guess that would make them 220,000 and above. From their website at least...

Is it really that difficult to read? The ARP site clearly says that head studs are heat treated precisely to 200,000psi.

According to the torque chart, a 11mm, 190,000/200,000psi stud get's torqued to 71 ft/lbs, and a 7/16-20 190,000/200,000psi stud get's torqued to 70 ftlbs.

What website are you looking at that says these would be 220,000 and above????

[3400-95-Modified]

Ok well If you said that in the beginning that would have saved alot of fustration... NO where did I see that these studs are 200,000 PSI I couldn't even find these part numbers in their catalog or on their site, so I don't know where you were looking to find that info, unless you are still confusing a 3.1 Iron head "KIT" and our peiced together set.

7/16-20 doesnt apply btw since its not listed as a STUD you need to follow over the 7/16-STUD line and 70ftlbs is under the 220,000 section so I assumed that would make these STUDS 220,000 PSI strength.

Also being an undercut stud with two different threads I'm not sure which one is the one you go by.

Well ARP must be dyslexic... the managed to send me 11x1.25 - 7/16x20, at 4.5 inches long... vs. the 11x1.5 - 7/16x20 at 5.4 inches... So now I need to send 8 bolts back... Another thing to slow me down from getting my pushrods measured... I thought the lengths didnt seem right when I got them... It was the thread size that caught my attention the most though...

[3400-95-Modified]

Confirmed Solid answer from an ARP tech. Ben I would package this torque spec with the bolts, Recommend them to use ARP assy lube and also post it on the store. I'm not sure how much torque to do with 30 weight oil.

HELLO JONATHAN
THE STUDS WILL GO IN THE BLOCK HAND TIGHT ONLY.WITH ARP MOLY LUBE ON THE THREADS AND WASHER TORQUE THE NUT TO 70FT LBS THANK YOU RONF

-----Original Message-----
From: Erica Martinez
Sent: Thursday, February 01, 2007 12:48 PM
To: Ron Fruchey
Subject: FW: Website Submitted Question from Jonathan Chmura



-----Original Message-----
From: ARP Questions [mailto:arpmail@smokeyyunick.com]
Sent: Wednesday, January 31, 2007 10:07 AM
To: info
Cc: jpchmura@charter.net
Subject: Website Submitted Question from Jonathan Chmura

Question Number: 2688

Jonathan Chmura

Submitted: 1/31/2007 @ 13:07:21

I need torque specs for the following bolts using arp assy lube.

Undercut Long studs - ATP5.4LU
Undercut Short studs - ATP4.650LU

Thanks
-Jonathan Chmura

Website Question