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Old 07-09-2008, 12:21 AM   #1
imprezaL2345
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Default torque specs for ARP studs. question.

i was planning on using the torque specs from my chiltons manual to tighten the bolts down until i read this:



which says to torque them down to 72lbs instead of the 1 & 2 to 17lbs and so on. so the question: which should i do.
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Old 07-09-2008, 01:07 AM   #2
wrx_driver_2002
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Follow ARP's guidelines. If you use the factory sequence, you will strip a nut, stud, or the threads in the case.

Also when you torque to the final number, I recommend doing it in 3-4 steps (Such do them all to 20, then all to 40, then all to 60, then all to 72)
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Old 07-09-2008, 01:47 AM   #3
Rickyh
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Read this.

It has a detailed discussion about arp studs, oem bolts and different methods used to torque both of em down.
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Old 07-09-2008, 11:13 AM   #4
imprezaL2345
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so going off of the\is:
Quote:
Originally Posted by bugeyes View Post
Finally had to an aswer from ARP on the stud kit. Here is the content of the email I got back-

"KIT # 260-4701 HAS 11MM STUDS IN IT. SO THE TORQUE WITH ARP MOLY LUBE
WILL BE 80 FT LBS. DO THIS IN 3 EQUAL STEPS, YOU WANT THE FINAL TO BE AT
LEAST 25 TO 30 FT LBS OF TORQUE. YOU DO NOT USE ANY TORQUE ANGLE WITH
OUR FASTENERS. IF YOU ADD AN EXTRA 90 DEG TORQUE TO THE STUD AFTER TORQUING IT TO 85 FT LBS YOU WILL MOST LIKELY FAIL THE FASTENER.

NOW THE STUDS WILL GO IN THE BLOCK HAND TIGHT ONLY NO MORE THAN 1 OR 2
FT LBS OF TORQUE. IF THEY GO INTO WATER YOU NEED TO USE A THREAD SEALER,
IF DRY HOLES THEN USE THE MOLY.
WITH A NEW STUD YOU NEED TO RUN IT THRU THE TORQUE CYCLE 3 TIMES TO
BREAK THE THREADS IN. WITH THE 4th TIME THE FINAL TORQUE.

THE KIT YOU HAVE IS A HIGHER GRADE MATERIAL THAN OUR REGULAR STUDS. REGULAR
STUD = 200,000 PSI KIT # 260-4701 = 220,000 PSI.
"
i should torque the studs in 4 steps(20,40,60,72) in subaru sequence, then loosen, and retighten them, 3 more times?
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Old 07-09-2008, 12:20 PM   #5
Whiteghost 2.5
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Yes you must tighten them and loosen them a total of 4 times. That is the correct way to Tighten ARP's. If you do not you will more than likely have a hg failure.

Josh
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