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Old December 23rd, 2011, 10:53 AM   #1
reptile610
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gear identification

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








rear diff






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

so.... what do i have here ???
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Old December 23rd, 2011, 11:04 AM   #2
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He lied, you have 3.73s with an open front and a really shitty welder rear.
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Old December 23rd, 2011, 11:06 AM   #3
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The 41 and 11 you can read on the ring gear in pic 3 is how many teeth are on the ring gear and pinion gear.
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Old December 23rd, 2011, 11:06 AM   #4
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Quote:
Originally Posted by chadcooper55 View Post
He lied, you have 3.73s with an open front and a really shitty welder rear.
figures, i have no idea how old this front axle is but it's drum brakes. i'd like to put scout 44's under it eventually but thanks for the info.
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Old December 23rd, 2011, 11:07 AM   #5
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Quote:
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The 41 and 11 you can read on the ring gear in pic 3 is how many teeth are on the ring gear and pinion gear.
so wouldn't that mean i have 4.11 gears?
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Old December 23rd, 2011, 11:08 AM   #6
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Quote:
Originally Posted by chadcooper55 View Post
The 41 and 11 you can read on the ring gear in pic 3 is how many teeth are on the ring gear and pinion gear.
i tried to get a pic of the #'s on the rear but i can hardly read them with an LED light on them
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Old December 23rd, 2011, 11:11 AM   #7
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so wouldn't that mean i have 4.11 gears?
No 41/11 equals 3.72xxxxx the pinion gear has to turn 3.72xx to make the big gear go around once.
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Old December 23rd, 2011, 11:12 AM   #8
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No 41/11 equals 3.72xxxxx take the the pinion gear has to turn 3.72xx to make the big gear go around once.
o ok. i didn't know u had to divide them. thanks for that
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Old December 23rd, 2011, 11:14 AM   #9
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now when i put the covers back on i have to put some type of sealant on it right?
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Old December 23rd, 2011, 11:15 AM   #10
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ya just get a tube of rtv sealant
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Old December 23rd, 2011, 11:23 AM   #11
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will do, thanks for the info guys
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Old December 23rd, 2011, 11:38 AM   #12
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You may want to consider a better weld job on that rear. Looks shady as hell to me.
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Old December 23rd, 2011, 12:16 PM   #13
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i think the most hardcore wheeling this will be doing anytime soon is driving down a dirt road
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Old December 23rd, 2011, 12:55 PM   #14
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Even still, I would weld that up better. I wouldn't hardly trust that weld job down the driveway and back

sent from my driod x, via my fingers through tapatalk
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Old December 23rd, 2011, 01:18 PM   #15
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Even still, I would weld that up better. I wouldn't hardly trust that weld job down the driveway and back

sent from my driod x, via my fingers through tapatalk
X2

Chances are you will break a weld rounding a corner on the street vs on the trail. Dirt gives, asphalt doesn't.
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