Pro Mod I-beam rod torque

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Oct 12, 2006 | 11:56 PM

67Firebird455

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From: Visalia, California

Pro Mod I-beam rod torque

Read an article, these rods use bolt stretch instead of torque... Another article said to torque to 70 ft-lbs. I don't have a rod bolt stretch gauge, how many ft-lbs are recommended? Opinions?

Oct 13, 2006 | 08:18 AM

BES Stroked Nova

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My engine builder wouldn't torque any rod bolt ever again. Thats what he told me, so i would buy one if you could...

Oct 13, 2006 | 10:26 AM

67Firebird455

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Wouldn't it make a difference since the rods have been used? All I know is these are some big *** rod bolts!

Oct 13, 2006 | 02:12 PM

JOHN LAWSON

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Not all Torque wrenches read the same.
Thats why to use a stretch guage.
ARP recomends .0045" - .005"

Oct 13, 2006 | 02:15 PM

67Firebird455

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I'll see if I can round one up... Thanks for your help!

Oct 13, 2006 | 02:20 PM

67Firebird455

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Gonna pick up a stretch gauge... Is that the actual spec for those rod bolts? 4.5-5 thousandths of an inch? Only problem I see, is that these rods were already used... Doesn't affect stretch and strength?

Oct 13, 2006 | 11:20 PM

streetlegalls1

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Once the rod bolts are torqued,there done,they are stretched,you will have to replace them for this type of procedure.

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Oct 13, 2006 | 11:30 PM

Ferocity02

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I torqued mine to 75ft-lbs. They had already been stretched when they were installed the first time so there is no way of knowing what the proper torque is. I heard 70-75 ft-lbs if torquing after stretched is about right. You don't have to get new bolts after stretching. When checking/setting bearing clearances, the bolt bolts are tightened and loosened many times. 810 miles on the motor and my rods are still in one piece.

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Oct 14, 2006 | 12:38 AM

67Firebird455

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From: Visalia, California

I would definitely trust you.. If it was going to let go, it would've done it by now! LOL I agree, I was going to shoot for 70 ft lbs... Thanks for the advice guys, and thanks for chiming in Ferocity, always good to hear from you!

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