Setting up 4.10 R&P (specs. for 20)?? - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 10-10-2000, 06:52 PM
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Setting up 4.10 R&P (specs. for 20)??

Does anyone know where I may obtain specs (backlash, pinion depth, etc) for setting up 4.10 R&P in the AMC 20? Haynes manual doesn't even have that [img]/wwwthreads_images/icons/shocked.gif[/img].
Thanks for the help.

Dody
81 CJ7 [img]/wwwthreads_images/icons/smile.gif[/img]
http://dodyjeephouse.homestead.com/jeepindody.html

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post #2 of (permalink) Old 10-10-2000, 07:21 PM
 
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Re: Setting up 4.10 R&P (specs. for 20)??

if you got new gears, they should have the instructions... However,
http://drivetrain.com/ringpinioninstal.html
should have all the answers to your questions!
Bob in MA

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post #3 of (permalink) Old 10-10-2000, 07:57 PM
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Re: Setting up 4.10 R&P (specs. for 20)??

Thanks Bob.
You've been great help.

Dody
81 CJ7 [img]/wwwthreads_images/icons/smile.gif[/img]
http://dodyjeephouse.homestead.com/jeepindody.html

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post #4 of (permalink) Old 10-10-2000, 10:48 PM
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Re: Setting up 4.10 R&P (specs. for 20)??

I just read those instructions, nice detail, but one thing, the backlash they recommend IMO is way too large, they say 8-12thou, but they do qualify that with saying STREET driven. I do believe in a 4by you will have better luck in the 4-9thou range, especially if you are running a locker. With a Detroit this is especially important because of the built in backlash in the unit.

Brad
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post #5 of (permalink) Old 10-11-2000, 08:38 AM
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Re: Setting up 4.10 R&P (specs. for 20)??

There is a write-up on my website that includes links that might be useful:
http://home.off-road.com/~tom85cj7/gearswap.htm

Later,

http://home.off-road.com/~tom85cj7/home.htm
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post #6 of (permalink) Old 10-11-2000, 09:56 AM
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Re: Setting up 4.10 R&P (specs. for 20)??

I have the factory manuals at home, 3 volumes, and can fax over pages if you have a number. They're for a 1978 CJ, but it's the same rear end as your '81.

JEEPN
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GM151/SM465/NP205 twinstick/7" Lift/33" Swampers/REP 8000/RS9000's/Scout II D44's F&R w/4.10's & Lockrights
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post #7 of (permalink) Old 10-11-2000, 10:11 AM
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Re: Setting up 4.10 R&P (specs. for 20)??

My model 20 backlash is set at .010-.012 and has run on and off road for 8 years. Gets inspected regularly and still looks perfect.
Mizu

post #8 of (permalink) Old 10-11-2000, 10:35 AM
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Re: Setting up 4.10 R&P (specs. for 20)??

Take a look at all those other sites that Tom has on his page. EVERY one of them says 4-8thous. Anything more than 9 is too big.

Brad
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post #9 of (permalink) Old 10-11-2000, 01:58 PM
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Re: Setting up 4.10 R&P (specs. for 20)??

I love this BBS [img]/wwwthreads_images/icons/cool.gif[/img] [img]/wwwthreads_images/icons/cool.gif[/img] [img]/wwwthreads_images/icons/cool.gif[/img] !!!
Thanks guys for the help.

Dody
81 CJ7 [img]/wwwthreads_images/icons/smile.gif[/img]
http://dodyjeephouse.homestead.com/jeepindody.html

post #10 of (permalink) Old 10-11-2000, 02:58 PM
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Re: Setting up 4.10 R&P (specs. for 20)??

www.ring-pinion.com has all the specs for all the common rearends on their site, too.

Jason '87YJ
"If you didn't build it, it isn't yours . . ."
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