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| Rod bolt torque ?? | Login/Join |
DRR Pro |
Looking for some help on torque spec on an older Oliver rod for a SBC. I have called Oliver numerous times. I get a generic message that no one is available and the mail box is full. The bolt is a 7/16 thread, Under head length is 1.3" head bolt is 12 point 1/2" Head of bolt is marked Oliver Std USA ARP 819. If any one has any information on the correct torque, angle and or stretch it would be greatly appreciated. I will call ARP next but they have never provided any information on anything that is made as a proprietary bolt for a manufacture Bruce Lee  Experience is what you get when you don't get what you want. | ||
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| DRR S/Pro |
Oliver has a unique process for torquing their rod bolts that requires the use of a Snap-On TA360 (Or similar made tool). I've forgotten the exact process but it requires tightening the bolts to a pre-set number, then relaxing the nut, then tightening it a second time to a stretch number using the TA360. You really need to contact Oliver about the process, someone at ARP may have the info, and with all due respect, call Oliver I think the bolt material may be proprietary, not the normal ARP material found in a catalogue. Good luck: Bob | |||
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| DRR Pro |
Thanks Bob Yes Oliver uses the torque angle to check stretch. Due to the bolt being Oliver proprietary ARP will not provide any information. I thought of replacing the bolts but ARP does not have any bolt listed in their catalog that is 1.3" under head length. Bruce Lee Experience is what you get when you don't get what you want. | |||
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| DRR Pro |
Did you see this on their site. https://oliverracingparts.com/...5/2023-BOLT-INST.pdf 2BKING   1980 Camaro Taking the Best Working Small Tire Shyt Box & making it Greater Than Before! 3100 lbs. Pump Gas 436 | |||
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| DRR Pro |
Mr. King, yes I have been all over that page. The bolt I'm needing information on is only 1.3" under the bolt head long. All of the Oliver and ARP bolts are minimum 1.5" Bruce Lee Experience is what you get when you don't get what you want. | |||
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