ARP head studs torque specs?
#1
ARP head studs torque specs?
I've searched and come up short...
I have 234-4110 ARP studs on my 6.0ltr iron block. Worked fine until I blew a gasket, now I wanna make sure I put it back together right. I've long lost the box they came in, so short of calling ARP and bugging them about it, this is the best option. What are you guys torquing them down to?
The only specs I can find on their website is 90ft-lbs with 30wt. and 63ft-lbs. with ARP moly for the 11mm studs. There's other numbers for higher tensile strength studs, but this was the minimum numbers I copied from their catalog page 24 (http://www.arp-bolts.com/Catalog/Catalog.html) ... input?
I have 234-4110 ARP studs on my 6.0ltr iron block. Worked fine until I blew a gasket, now I wanna make sure I put it back together right. I've long lost the box they came in, so short of calling ARP and bugging them about it, this is the best option. What are you guys torquing them down to?
The only specs I can find on their website is 90ft-lbs with 30wt. and 63ft-lbs. with ARP moly for the 11mm studs. There's other numbers for higher tensile strength studs, but this was the minimum numbers I copied from their catalog page 24 (http://www.arp-bolts.com/Catalog/Catalog.html) ... input?
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#9
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Both 11/8mm studs in finger tight, then torque nuts to 35/65/85ft. lbs on 11mm nuts and 10/20/30ft. lbs on 8mm nuts with SAE30 motor oil! (chamfer side of washer down towards head also)
#12
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I would highly recommend using ARP's Ultra torque lube. its like 5 bucks and will get you a much more accurate torque reading.
With ARP Ultra torque 80 lb/ft on the larger studs, 22 lb/ft on the smaller studs
From ARP's FAQ section
"1. Does the chamfer on the washer go up or down?
The chamfered side of the washer goes up toward the head of the bolt."
With ARP Ultra torque 80 lb/ft on the larger studs, 22 lb/ft on the smaller studs
From ARP's FAQ section
"1. Does the chamfer on the washer go up or down?
The chamfered side of the washer goes up toward the head of the bolt."
#13
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1. The friction factor changes from one application to the next. That is, the friction is at its highest value when the fastener is first tightened. Each additional time the fastener is torqued and loosened, this value gets smaller. Eventually the friction levels out and becomes constant for all following repetitions. Therefore, new fasteners should be tightened and loosened through several cycles before applying final torque. The number of times depends on the lubricant. For all situations where ARP lubricants are used, five cycles are required before final torquing.
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Up on a bolt, down for a stud the way i do it. Just look at the surface area of washer with the chamfer in it, and then flip it over and look at the other side? Then tell me which side you want the nut pushing down against?
Last edited by JPH; 01-12-2010 at 10:46 AM.
#15
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Not true, chamfer ALWAYS faces toward head of bolt/nut
see my post https://ls1tech.com/forums/generation-iii-internal-engine/1226761-how-properly-install-torque-arp-fasteners.html
see my post https://ls1tech.com/forums/generation-iii-internal-engine/1226761-how-properly-install-torque-arp-fasteners.html
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Not true, chamfer ALWAYS faces toward head of bolt/nut
see my post https://ls1tech.com/forums/generation-iii-internal-engine/1226761-how-properly-install-torque-arp-fasteners.html
see my post https://ls1tech.com/forums/generation-iii-internal-engine/1226761-how-properly-install-torque-arp-fasteners.html