JT4x4

The Mud Pit => Wrenching => Topic started by: reptile610 on December 23, 2011, 05:51:16 PM

Title: gear identification
Post by: reptile610 on December 23, 2011, 05:51:16 PM
was told when i bought the cj that it had a dana 30 up front and amc 20 rear both are locked but wasn't sure on the gears.

front diff
(http://i40.photobucket.com/albums/e218/reptile610/1982%20CJ7/IMG_20111223_105009.jpg)

(http://i40.photobucket.com/albums/e218/reptile610/1982%20CJ7/IMG_20111223_105038.jpg)

(http://i40.photobucket.com/albums/e218/reptile610/1982%20CJ7/IMG_20111223_105310.jpg)

(http://i40.photobucket.com/albums/e218/reptile610/1982%20CJ7/IMG_20111223_105603.jpg)

rear diff
(http://i40.photobucket.com/albums/e218/reptile610/1982%20CJ7/IMG_20111223_113552.jpg)

(http://i40.photobucket.com/albums/e218/reptile610/1982%20CJ7/IMG_20111223_113557.jpg)

(http://i40.photobucket.com/albums/e218/reptile610/1982%20CJ7/IMG_20111223_113733.jpg)

no idea about the front but it looks like the rear is welded.

so.... what do i have here ???
Title: Re: gear identification
Post by: BlacXJeep on December 23, 2011, 10:00:07 PM
looks like its open up front to me sir
Title: Re: gear identification
Post by: Bill3753 on December 23, 2011, 11:19:04 PM
You have 3.73's.
Title: Re: gear identification
Post by: reptile610 on December 24, 2011, 01:19:11 AM
cleaned them out with a rag and then put them back together. filled up the front and most of the rear but noticed it was seeing slightly so i stopped and am going to check it tomorrow after the rtv sealer has finished hardening
Title: Re: gear identification
Post by: Mr Rock on December 24, 2011, 02:35:07 AM
front is open!
Bill, as usual is correct. the 41 11 stamped in the ring gear tells you that the ring has 41 teeth and the pinion has 11, 41/11=3.72272727....
Title: Re: gear identification
Post by: Bill3753 on December 24, 2011, 02:42:12 AM
Look at this on my phone earlier and didn't feel like typing much on there.  Anyways, like I said earlier definatly 3.73's.  As others have mentioned, definatly open diff on the front.  As you already mentioned, the rear is welded.  However, those welds don't look the greatest specifically on the upper side of the carrier to spider gear weld.  If it were me I'd run it till it broke that way, but I wouldn't push it hard it you want it to last.
Title: Re: gear identification
Post by: Mr Rock on December 24, 2011, 03:28:03 AM
Look at this on my phone earlier and didn't feel like typing much on there.  Anyways, like I said earlier definatly 3.73's.  As others have mentioned, definatly open diff on the front.  As you already mentioned, the rear is welded.  However, those welds don't look the greatest specifically on the upper side of the carrier to spider gear weld.  If it were me I'd run it till it broke that way, but I wouldn't push it hard it you want it to last.
Yes, but you are Mr Overkill! the welds will hold up for most wheeling, I would have no problem running 33's on that rearend, but I would think about if you run 35's
Title: Re: gear identification
Post by: gearhead1985B on December 24, 2011, 05:15:08 AM
i thought you was selling it but just get it road worthy and drive the piss out of and fix it as you break it and if you find cheap front fenders on craigs list buy them cause you will hit a tree
Title: Re: gear identification
Post by: reptile610 on December 24, 2011, 03:21:51 PM
i thought you was selling it but just get it road worthy and drive the piss out of and fix it as you break it and if you find cheap front fenders on craigs list buy them cause you will hit a tree

haven't you learned from me yet that i change my mind about 100000 times.  ;D no longer for sale but being moved up to my old high school and my brother is going to mess with the electrical nightmare up there. it's free labor and i don't have to worry about where to put the jeep until school lets out which hopefully by then i can drive it.
Title: Re: gear identification
Post by: gearhead1985B on December 24, 2011, 07:04:59 PM
i thought you was selling it but just get it road worthy and drive the piss out of and fix it as you break it and if you find cheap front fenders on craigs list buy them cause you will hit a tree

haven't you learned from me yet that i change my mind about 100000 times.  ;D no longer for sale but being moved up to my old high school and my brother is going to mess with the electrical nightmare up there. it's free labor and i don't have to worry about where to put the jeep until school lets out which hopefully by then i can drive it.

just bring it to me and i will fix it all but i need 10k for parts
Title: Re: gear identification
Post by: Mr Rock on December 27, 2011, 08:15:14 PM

just bring it to me and i will fix it all but i need 10k for parts

Even then it won't be finished! lol
Title: Re: gear identification
Post by: reptile610 on December 30, 2011, 04:42:08 AM
Just Empty Every Pocket