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Old 05-24-2008, 02:42 PM   #1
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Do not trust axle tags

A little backround first. I bought my Jeep new in 2006 and one of the main selling points to me was the 4:11 gear ratio with trak loc on the window sticker. While removing the bolts for the reat dif cover to change the fluids I noticed on the tag it said 3-73! I got very aggravated and was thinkin about how to go about sueing everyone from the dealer to Chrysler. After removing the cover it was a tracloc and the gears were 4:11s.
My theory is someone during assembly put the wrong tags on.
If my theory is correct there may be a jeep out there with 4:11 tags on the axle cover but only 3:73 in the case.
My advise to anyone buying a used jeep is to jack up the vehicle and spin the tire one revolution and count how many times the drive shaft turns.

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Old 05-24-2008, 02:47 PM   #2
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???? do you think it may be the factory tag and it came with 3.73's and someone changed them to 4.11's and just slapped the cover/tag back on it.

Or did you buy the jeep ''NEW"??

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Old 05-24-2008, 02:50 PM   #3
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I bought my Jeep brand new, and the bolts and tags where all undisturbed. No sign of chipped paint on bolt heads, you could even see the paint overlapping onto the tag from the cover.
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Old 05-24-2008, 02:55 PM   #4
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he said new in 06 =p cant you read?
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Old 05-24-2008, 02:58 PM   #5
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he said new in 06 =p cant you read?
Whoa, little testy are we?
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Old 05-24-2008, 03:12 PM   #6
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Whoa, little testy are we?
just giving dist a rough time =D

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Old 05-24-2008, 03:15 PM   #7
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just giving dist a rough time =D

Now where did the mod's put that ignore button....


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Old 05-24-2008, 05:00 PM   #8
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i know people change gears and leave tags, but from the factory, that sucks. i never trust the tags on a jeep.
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Old 05-24-2008, 06:34 PM   #9
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#2!! My old Jeep was in the shop 3 times because of this!! While I was in school, I had a 97 wrangler sport, and was not comfortable with a rear end rebuild at that point. I payed a shop to do it. 2 weeks after it was done, the rear went. Took it back, same thing, 1-2 weeks later went again. The shop was puzzeled, couldnt figure out what was going on. The tag from my original rear said the same as the tags from the low mile junkyard rears the put in. The cracked the case on my original rear end and the gear ratio was different, but all the "used" rear ends had the correct ratio by the tag. Thus, obviously, my rear ratio was different than the front. Everytime I put the jeep in 4wd, it was tearing up the driveline.

DOUBLE CHECK THE RATIOS WHEN YOU BUY YOUR JEEP, by spinning the tire in the air and counting the shaft... Unless you have a Rubi
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Old 05-24-2008, 08:16 PM   #10
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My advise to anyone buying a used jeep is to jack up the vehicle and spin the tire one revolution and count how many times the drive shaft turns.
you have to spin both tires same direction, or take the amount of times the driveshaft spins an double it
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Old 05-24-2008, 08:28 PM   #11
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you have to spin both tires same direction,
Tracloc= posi rear both tires spin in same direction and will spin driveshaft
open rear= opposite tire will spin backwards and possibly will not spin driveshaft solution: leave one tire on ground

ensure transmission is in neutral and don't forget to block the front tires so vehicle does not roll away on you.
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Old 05-25-2008, 11:59 AM   #12
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on an open diff, if you are only turning one tire, you can't just count the number of times the drive shaft turns in relation to the tire. for example if you have 4:11 gears, and you spin one tire one revoulution, the drive shaft will only spin a little more than 2 revoulutions. it will not spin 4+revoulutions. If you don't believe me, go try it
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Old 05-26-2008, 07:48 AM   #13
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if you have 4:11 gears, and you spin one tire one revoulution, the drive shaft will only spin a little more than 2 revoulutions.
No need to get nasty but that must be some new math you are using if you are only getting over 2 revolutions you are doing something wrong or you really have 2 something gears

4:11= approx 4 to 1 revolutions
2:73=aprrox 2 3/4 rev to 1
3:56=approx 3 1/2 rev to 1

for example: if you have one gear with 10 teeth on and another with 40 teeth
the 10 tooth geer must rotate 4 times to make one revolution around the 40 tooth 4*10= 40 or 40/10=4 ie 4:1
to make it possible to determine exact gear ratios. You just count the number of teeth in the two gears and divide. So if one gear has 60 teeth and another has 20, the gear ratio when these two gears are connected together is 3:1.
60/20=3 3:1


I am just trying to help there is no need to attck me with your go try it yourself comment
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Old 05-26-2008, 12:26 PM   #14
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Not trying to be nasty, sorry if it comes across thet way.
What you are saying is true . But what you are not considering is how a differential (open) functions. Think about it this way: If the engine is spinning the driveshaft and you are going straight down the road, in the diff the pinion gear is turning the ring gear and the ring gear is bolted to the carrier. So the whole carrier assembly is turning as well as the axles. What is not turning in this scenario are the spider gears. They are going round and round with the carrier, but they are not spinning. Now if you stop one wheel/axle as the carrier spins the spider gears are rotating around the stopped gear on the end of the axle, and they in turn are rotating the other axle at double the speed.
I'm not sure if I expained it in a way that you can understand because I am not good at explaining things with just words, I need my hands or other visual aids.
Seriously though, if you have an open diff on your Jeep, try it. Lift one wheel off the ground. Get under the Jeep and make a reference mark on the driveshaft, have someone spin the wheel one rotation and see what you find out.
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Old 05-26-2008, 12:30 PM   #15
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I am just trying to help there is no need to attck me with your go try it yourself comment
Oh, and seriously, not meant as an attack by any means. I am just trying to help as well.
Once again, sorry If I offended you.
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Old 05-31-2008, 11:07 AM   #16
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So, nothing else to say?

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89 yj 4 banger 5sp. 2" BL 31x10.50 fixed up and sold
97 tj 4.0 Auto 4"RC lift 33x12.50 mud rovers on outlaw IIs . Smitty bumpers
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