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Old January 23rd, 2008, 07:03 PM   #1
Rocky
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Default reuseing ring gear bolts

Good or bad idea?

The master install kit I bought from DTS 4 of the 10 ring gear bolt threads pulled off before I even hit 70 ft lbs.The other 6 looked like they were about to rip off, once I removed them. They are grade 8 3/8-24 NF.

The old ones are grade 9's with a larger bolt head and are serrated. I installed them in place of the new ones with red loc. I figured they have to be better than the POS new ones.

BTW I did not try to press the ring gear on the carrier with the bolts.
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Old January 23rd, 2008, 10:26 PM   #2
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Most ring gear bolts are not technically torque to yield.

I have re-used them before, but I try not to.

As long as they have good threads and there is no nicks or notches in the shank or bearing surface they should be ok.

Red Lock Tite always.
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Old January 23rd, 2008, 10:27 PM   #3
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I have had the same problem with the garbage bolts DTS includes in their kits. I usually replace them with new one's from ARP. If you're in a time crunch and the old bolts check out ok I don't think you will have a problem.
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Old January 23rd, 2008, 10:30 PM   #4
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Thanks I was lucky it wasn't my brand new ring gear that I tore the threads out of. The old bolts looked fine. Put some red lock tite on the threads and ran them down to 80 ft lbs. all is good now. Just need to set it up tomarrow.
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Old January 24th, 2008, 06:41 AM   #5
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what RG are you running that you need to torque the bolts to 70 than 80 ft lbs??? Your jeep the RG bolts get tightened to 55 ftlbs. front and rear
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Old January 26th, 2008, 08:59 AM   #6
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what RG are you running that you need to torque the bolts to 70 than 80 ft lbs??? Your jeep the RG bolts get tightened to 55 ftlbs. front and rear
dana 30 fsm 70-90
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Old January 26th, 2008, 09:22 AM   #7
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No problem. I've done it several times. Use red locktight though.
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Old January 26th, 2008, 09:29 AM   #8
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Originally Posted by KILLER"B"468 View Post
what RG are you running that you need to torque the bolts to 70 than 80 ft lbs??? Your jeep the RG bolts get tightened to 55 ftlbs. front and rear
i don't know 'bout that. last i checked d-30's were torqued to 70 ft-lbs as well as the 8.25
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Old January 27th, 2008, 12:11 AM   #9
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if you want to get real techinical the torque is 70-105 depending on the build of material info

but yes 70 is where they should be set.
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Old January 30th, 2008, 07:39 PM   #10
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dana 30 fsm 70-90
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i don't know 'bout that. last i checked d-30's were torqued to 70 ft-lbs as well as the 8.25
Sweet.

I always used Randy's R&P chart and they call for 55ftlbs on the ring gears for both applications. I have never seen a RG bolt break at 55 lbs. I have at 70ftlbs. I also have never had any back off. Take it for what it is worth.
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Old January 30th, 2008, 08:54 PM   #11
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Sweet.

I always used Randy's R&P chart and they call for 55ftlbs on the ring gears for both applications. I have never seen a RG bolt break at 55 lbs. I have at 70ftlbs. I also have never had any back off. Take it for what it is worth.
Me either. The threads just pulled off the bolt. I would post a pic but I think I threw them all away.
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Old January 31st, 2008, 06:53 AM   #12
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if you want to get real techinical the torque is 70-105 depending on the build of material info

but yes 70 is where they should be set.
I would like to see a 3/8" bolt torqued to a 105 ftlbs. without breaking.

70 - 90 NM would fall in the 50 to 60 ft lb range. wonder if the torque values are messed up. The torque ratings are to high for that size bolt.
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Old January 31st, 2008, 07:43 AM   #13
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Quote:
Originally Posted by KILLER"B"468 View Post
Sweet.

I always used Randy's R&P chart and they call for 55ftlbs on the ring gears for both applications. I have never seen a RG bolt break at 55 lbs. I have at 70ftlbs. I also have never had any back off. Take it for what it is worth.

I just replaced all my ring gear bolts last weekend because 3 were in the bottom of the diff and the other 7 were all loose. I could move the ring gear away from the spool by about a half an inch.
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