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Need torq specs for ARP bolts with K-1 rods. #1206725 03/30/12 09:19 PM 03/30/12 09:19 PM
Joined: Nov 2004 Posts: 892 USA K krw71ragtop OP super stock
krw71ragtop OP super stock K Joined: Nov 2004 Posts: 892 USA	This is on a small block and the bolts are ARP 2000 along with ARP lube. The directions say 30 ft lbs @ 60 degrees ! Please explain.

Re: Need torq specs for ARP bolts with K-1 rods. [Re: krw71ragtop] #1206726 03/30/12 10:04 PM 03/30/12 10:04 PM
Joined: Jan 2003 Posts: 1,008 wv D Dartcuda super stock
Dartcuda super stock D Joined: Jan 2003 Posts: 1,008 wv	http://www.bing.com/images/search?q=torq...9FD&first=0 Torque then go 60 degrees using guage

Re: Need torq specs for ARP bolts with K-1 rods. [Re: Dartcuda] #1206727 03/30/12 10:41 PM 03/30/12 10:41 PM
Joined: Nov 2004 Posts: 892 USA K krw71ragtop OP super stock
krw71ragtop OP super stock K Joined: Nov 2004 Posts: 892 USA	Quote: http://www.bing.com/images/search?q=torq...9FD&first=0 Torque then go 60 degrees using guage So I torq to 30 ft lbs then add another 60 degrees to that ? We made a template the first time this motor was built. I just wanted to make sure I got them tight enough !

Re: Need torq specs for ARP bolts with K-1 rods. [Re: krw71ragtop] #1206728 03/30/12 11:28 PM 03/30/12 11:28 PM
Joined: Jan 2003 Posts: 1,008 wv D Dartcuda super stock
Dartcuda super stock D Joined: Jan 2003 Posts: 1,008 wv	correct http://www.arp-bolts.com/pages/technical_installation.shtml

Re: Need torq specs for ARP bolts with K-1 rods. [Re: Dartcuda] #1206729 03/31/12 12:21 PM 03/31/12 12:21 PM
Joined: Jan 2003 Posts: 3,505 DFW M mr_340 master
mr_340 master M Joined: Jan 2003 Posts: 3,505 DFW	You should have measured the rod bolt stretch and then matched the stretch on assembly. Torque is heavily dependent on the friction coefficient in the threads and under the bolt head. "The relationship between applied torque and the tension created is described by the relationship: T = K � D � F where T = torque, K = nut factor, sometimes called the friction factor, D = bolt diameter, and F = bolt tension generated during tightening. This expression is often called the short-form equation." http://machinedesign.com/article/underst...lationship-0818 Floyd Lippencott IV

Re: Need torq specs for ARP bolts with K-1 rods. [Re: krw71ragtop] #1206730 03/31/12 09:25 PM 03/31/12 09:25 PM
Joined: Dec 2004 Posts: 10,563 Rittman Ohio fourgearsavoy I Live Here
fourgearsavoy I Live Here Joined: Dec 2004 Posts: 10,563 Rittman Ohio	I torqued mine to 75 Ft.Lbs. with ARP lube Gus 7145215-savoyburnout.jpg (31 downloads) 64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60

Re: Need torq specs for ARP bolts with K-1 rods. [Re: fourgearsavoy] #1206731 04/01/12 12:38 PM 04/01/12 12:38 PM
Joined: Nov 2004 Posts: 892 USA K krw71ragtop OP super stock
krw71ragtop OP super stock K Joined: Nov 2004 Posts: 892 USA	Quote: I torqued mine to 75 Ft.Lbs. with ARP lube Gus Thanks Gus. I have them @ 30 ft lbs right now and found my 60 degree pattern we made when it was put together the first time. I'll add the 60 degrees and check it with a torque rench to see what the final torque spec is . I'm sure it will be right around 75 ft lbs.

Re: Need torq specs for ARP bolts with K-1 rods. [Re: mr_340] #1206732 04/01/12 12:48 PM 04/01/12 12:48 PM
Joined: Jan 2011 Posts: 4,785 Utah and Alaska astjp2 master
astjp2 master Joined: Jan 2011 Posts: 4,785 Utah and Alaska	So you are saying, don't follow K1's instructions? Do what you want? Those specifications are written by K1 with the recommendations from ARP. Tim Quote: You should have measured the rod bolt stretch and then matched the stretch on assembly. Torque is heavily dependent on the friction coefficient in the threads and under the bolt head. "The relationship between applied torque and the tension created is described by the relationship: T = K � D � F where T = torque, K = nut factor, sometimes called the friction factor, D = bolt diameter, and F = bolt tension generated during tightening. This expression is often called the short-form equation." http://machinedesign.com/article/underst...lationship-0818

Re: Need torq specs for ARP bolts with K-1 rods. [Re: krw71ragtop] #1206733 04/01/12 12:51 PM 04/01/12 12:51 PM
Joined: Jan 2011 Posts: 4,785 Utah and Alaska astjp2 master
astjp2 master Joined: Jan 2011 Posts: 4,785 Utah and Alaska	Just spend the $19.00 for the torque angle meter off the Bay and do it right. Its more accurate to do it by angle than torque, that is why K1 has you do it that way. Tim Quote: Quote: I torqued mine to 75 Ft.Lbs. with ARP lube Gus Thanks Gus. I have them @ 30 ft lbs right now and found my 60 degree pattern we made when it was put together the first time. I'll add the 60 degrees and check it with a torque rench to see what the final torque spec is . I'm sure it will be right around 75 ft lbs.

Re: Need torq specs for ARP bolts with K-1 rods. [Re: astjp2] #1206734 04/01/12 01:24 PM 04/01/12 01:24 PM
Joined: Jan 2003 Posts: 3,505 DFW M mr_340 master
mr_340 master M Joined: Jan 2003 Posts: 3,505 DFW	Quote: So you are saying, don't follow K1's instructions? Do what you want? Those specifications are written by K1 with the recommendations from ARP. Tim My thought is you want to have the same stretch as when the big ends were honed, otherwise the big end might end up distorted due to a different clamping load. Just my thoughts on the matter after watching my machinist hone the big ends of my Manley I-beam Hemi rods. He gave me the free lengths of all the rod bolts new, and the final stretched lengths for each bolt. If you didn't measure them before you pulled them apart, then I think the torque-angle method is the next best approach after measuring the stretch. Just my thoughts on rods. Feel free to "agree to disagree". Floyd Lippencott IV

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