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Old 09-30-2010, 11:20 PM   #1
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Stock gear ratio 97 Tj?

Hi so I recently bought my first car and its a jeep. Already lifted 4 inches with some 33's on it but my speedometer is way off. I have been looking everywhere and people just cannot straight up answer the question.
I know i can look on my diff covers but they are just way to banged up and dirty.
So does anyone know the stock gear ration for a 1997 TJ 4.0 liter 6 cylinder manual?

Also my steering wheel makes noise when I turn really sharp anyone have any suggestions for that? like it squeaks as if it needs grease or something.

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Old 09-30-2010, 11:26 PM   #2
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It'd be either a 3.07 or 3.73. There should be a metal tag bolted on the the diff at the 9 o'clock position.

I think you can turn the wheel and watch the drive shaft, one full turn of the wheel should turn the shaft 3.07 or 3.73 times. I read that is pretty inaccurate though and I wouldn't trust it.

Easiest way is to call up a Jeep dealer with your VIN number and ask them to look it up or order you a build sheet.

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Old 10-01-2010, 08:33 AM   #3
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If it already had a 4" lift w/33's, it's quite possible the stock gearing has been changed also.

Doing as jwm suggested and lifting the rear and turning the tires to count the drive shaft revolutions would be the best way to know for sure.
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Old 10-01-2010, 09:30 AM   #4
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I work at a dealer whats your vin#
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Old 10-01-2010, 09:40 AM   #5
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d-kroha will probably help you the most. You could also pull your diff covers off and read the numbers on the gears themselves, but the odds of them being stock are slim to none.
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Old 10-01-2010, 10:34 AM   #6
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They could also be 3.55 that was an option in 97.
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Old 10-01-2010, 10:46 AM   #7
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the whining noise when steering, theres a rubber bushing where the steering wheel shaft goes threw the fire wall. most jeeps it will do it when its cold but my 97 started doing it all the time. under the dash rub some marine grease on the shaft and bushing
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Old 10-01-2010, 08:07 PM   #8
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How about using the "turn the tire and count the driveshaft rotations" trick? Then you'll know for sure.
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Old 10-01-2010, 08:14 PM   #9
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I would like to know why you won't look on your covers if you know that's where the info you are requesting is located? When most people regear they remove the tags. So not looking because the PO might have regeared is fishy. How far off is your speedo?

It is not a car.

You won't get a straight up answer from anyone. This is going to take effort on your part. Giving someone the VIN is your best way out.
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Old 10-01-2010, 08:16 PM   #10
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It's either 3.07 or 3.55, 3.73 didn't come along until 1998.

Dirty or banged up, you should still be able to read the ratio that you'll find embossed into the tag bolted to the left side of the differential cover. If it's too dirty to read, wash it. The below tag shows the axle in the photo has a 3.73 ratio.
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Old 10-01-2010, 08:44 PM   #11
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Quote:
Originally Posted by nick50471 View Post
I would like to know why you won't look on your covers if you know that's where the info you are requesting is located? When most people regear they remove the tags. So not looking because the PO might have regeared is fishy. How far off is your speedo?

It is not a car.

You won't get a straight up answer from anyone. This is going to take effort on your part. Giving someone the VIN is your best way out.
Using the VIN is only good if the PO hadn't changed the gearing. That's why I suggested the spin and count method.
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Old 10-01-2010, 09:28 PM   #12
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Originally Posted by 03 RUBI View Post
Using the VIN is only good if the PO hadn't changed the gearing. That's why I suggested the spin and count method.
It was suggested twice before you mentioned it.
Soooo.... to the OP...... Spin the wheels and check the driveshaft revs!!!
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Old 10-03-2010, 07:40 PM   #13
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Originally Posted by HyperBuzzin View Post
It was suggested twice before you mentioned it.
Soooo.... to the OP...... Spin the wheels and check the driveshaft revs!!!

It's sure NOT the first time I've seen the same thought or suggestion repeated (and repeated) on this forum.

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