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Anyone know torque specs for arp head studs?

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Old Feb 8, 2007 | 10:00 PM
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Default Anyone know torque specs for arp head studs?
Im putting my heads back on this weekend. Its been a while and i dont remember the sequence and torque specs. They are arp 12 point studs,also the intake specs. Im using cometic .051 gaskets if that matters and a fast intake.

Thanks alot.
Alex
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Old Feb 9, 2007 | 12:02 AM
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Originally Posted by SPRAYED 01
Im putting my heads back on this weekend. Its been a while and i dont remember the sequence and torque specs. They are arp 12 point studs,also the intake specs. Im using cometic .051 gaskets if that matters and a fast intake.

Thanks alot.
Alex
Using ARP's moly assembly lube...70ft/lbs on big studs and 23ft/lbs on small studs.

Hammer
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Old Feb 9, 2007 | 12:09 AM
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I like to go in steps, usually 2 steps and then the final ... and then the little ones
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Old Feb 9, 2007 | 06:25 AM
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25lbs on the 5 top ones, 70 on the larger ones. This of course is when you use ARP moly lube too.
http://www.arp-bolts.com/Catalog/Catalog.html
Scroll down and click on torque specs.
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Old Feb 9, 2007 | 07:40 AM
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Does anyone know the sequence or is it the same as stock?
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Old Feb 9, 2007 | 07:46 AM
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same as stock, see attached picture.
Attached Thumbnails Anyone know torque specs for arp head studs?-torquebolts.jpg  
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Old Feb 9, 2007 | 07:48 AM
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Originally Posted by brad8266
25lbs on the 5 top ones, 70 on the larger ones. This of course is when you use ARP moly lube too.
http://www.arp-bolts.com/Catalog/Catalog.html
Scroll down and click on torque specs.

i dont want to hijack your thread bro but can someone shed some light on the ARP Moly Lube???
is it neccessary?
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Old Feb 9, 2007 | 07:57 AM
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Originally Posted by 1baddls1
i dont want to hijack your thread bro but can someone shed some light on the ARP Moly Lube???
is it neccessary?
It is highy recommended because that is what ARP uses to get their torque specs. If you use it and tighten a bolt to 70lbs and take another bolt and with no lube on it and tighten it to 70lbs, the 2 bolts will have different clamping pressures due to the friction differences in the 2 bolts. Using moly lube is a way of getting consistent clamping force out of a bolt for a given torque value.
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Old Feb 9, 2007 | 09:53 AM
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Great thanks alot guys. Hopefully my other head gasket will come in and ill have this thing running this weekend
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Old Feb 9, 2007 | 10:47 AM
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Originally Posted by brad8266
25lbs on the 5 top ones, 70 on the larger ones. This of course is when you use ARP moly lube too.
http://www.arp-bolts.com/Catalog/Catalog.html
Scroll down and click on torque specs.
Brad, I realize that the small bolts themselves generically allow for 25lbs...but the spec in this specific application is 23 ft/lbs. It probably has to do with stress on the aluminum threads in the block.

Hammer
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Old Feb 9, 2007 | 11:57 AM
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Originally Posted by thehammer69
Brad, I realize that the small bolts themselves generically allow for 25lbs...but the spec in this specific application is 23 ft/lbs. It probably has to do with stress on the aluminum threads in the block.

Hammer
lol, 22, 23, 25 whatever, its really doesnt matter. Where did you get 23 from anyway, cite a reference please. if goiong up to 25 from 23 breaks threads, your block is a POS and fucked up in the first place.
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Old Feb 9, 2007 | 01:03 PM
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use the lube, do not use oil- torque is too high
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Old Feb 9, 2007 | 05:49 PM
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Originally Posted by SPRAYED 01
Im putting my heads back on this weekend. Its been a while and i dont remember the sequence and torque specs. They are arp 12 point studs,also the intake specs. Im using cometic .051 gaskets if that matters and a fast intake.

Thanks alot.
Alex
well since you are using cometics, i would do 85ft. lbs on the 11mm studs, and 27ft. lbs on 8mm studs. i do on my engines. cometics have a reputation of not sealing, because of not enough clamping force. go in three steps also when torqing studs, like the others have said.
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Old Feb 9, 2007 | 06:45 PM
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Anyone else for torqueing more do to the cometics.
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Old Feb 9, 2007 | 06:53 PM
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Originally Posted by SPRAYED 01
Anyone else for torqueing more do to the cometics.
Only if you want to risk it. The bolts are stretched to a percentage of material yield. The ARP's have limited ductility, exceed yield and you may break it. I would consult ARP before altering their torque specifications.
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Old Feb 9, 2007 | 06:54 PM
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Originally Posted by brad8266
lol, 22, 23, 25 whatever, its really doesnt matter. Where did you get 23 from anyway, cite a reference please. if goiong up to 25 from 23 breaks threads, your block is a POS and fucked up in the first place.
I was also given 23 lb-ft by ARP tech support.
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Old Feb 9, 2007 | 10:01 PM
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Is the moly lube just used between the nut and washer or washer and head, or on the actual threads? What about ARP head bolts? Is it the same 70/25 numbers and moly lube between the head of the bolt and cylinder head?
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Old Feb 9, 2007 | 10:41 PM
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Originally Posted by Quick Double Nickel
Is the moly lube just used between the nut and washer or washer and head, or on the actual threads? What about ARP head bolts? Is it the same 70/25 numbers and moly lube between the head of the bolt and cylinder head?
On the stud threads, washer face, and nut threads.

With bolts it goes on the bolt threads and face of the bolt head where it contacts the head.

Torque values are in the link that i posted above.
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Old Feb 9, 2007 | 10:44 PM
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Originally Posted by vettenuts
I was also given 23 lb-ft by ARP tech support.
So would you listen to the guy on the phone or the published and printed tech data sheets that they put out?
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