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Old 10-21-2009, 07:36 AM   #1
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Question Gearing

i there a way to tell what gears r in my tj like 4:10 etc. When in 5th gear doing 60 my rpm's r at 2500 (stock size tires 225/17/r15). idk how to tell if maybe the previous owner had the gearing changed or not.

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Old 10-21-2009, 10:21 AM   #2
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4banger or 6? 4 banger has the 4.10's.The 6 either has the 3.07 or the 3.73's. If it is a 6 check the diff tags. Normally at the 10 oclock position held on by the diff bolts.

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Old 10-21-2009, 10:35 AM   #3
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I have a 4 with 3.73's
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Old 10-21-2009, 10:38 AM   #4
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^wow really. I have only ever seen them with 4.10's I am sorry! I have 5.13's now
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If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 10-21-2009, 11:04 AM   #5
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3.07 & 3.73 are the typical gear ratios from factory.

The 03-06 TJ Rubicon is the only one I know that comes with 4.10 stock

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Old 10-21-2009, 11:12 AM   #6
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SNW-I had 4.10s stock in my 4 banger and all the yj's with 4bangers I have seen with 4.10s too. HMM interesting.
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If you haven't gotten more out of the insurance company than you deserve, then you haven't screwed them nearly as much as they have been screwing you for the past xx years.
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Old 10-21-2009, 11:51 AM   #7
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Ahhh interesting, didnt know that.
I wonder if it was to make up for the 4cyl for better driving.

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Old 10-21-2009, 02:01 PM   #8
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Quote:
Originally Posted by 2000SEWrangler View Post
i there a way to tell what gears r in my tj like 4:10 etc. When in 5th gear doing 60 my rpm's r at 2500 (stock size tires 225/17/r15). idk how to tell if maybe the previous owner had the gearing changed or not.
assuming you meant 225/70r15, and your speedo is correct, then you have 4.10s
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Old 10-21-2009, 06:47 PM   #9
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i thought they were 4:10 thanks everyone for letting me know. i just wanted to see if maybe the previous owner changed them.
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Old 10-22-2009, 12:31 PM   #10
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The first thing is to see if the factory tag is still attached to either the front or rear diff. cover bolts. It has the ratio stamped on it. If both of those are gone, you can determine the ration by using this very scientific poceedure; Mark your drive shaft with something like a piece of chalk, then mark one of your tires in the same manner, have someone count the number of turns of the drive shaft when the tire turns one full revolution. If the shaft turns slightly over 3 turn you have a 3:07, if it turn about 3 and3/4 tuns its a 3:73, et. Very scientific! But it works.
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Old 10-22-2009, 04:58 PM   #11
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The first thing is to see if the factory tag is still attached to either the front or rear diff. cover bolts. It has the ratio stamped on it. If both of those are gone, you can determine the ration by using this very scientific poceedure; Mark your drive shaft with something like a piece of chalk, then mark one of your tires in the same manner, have someone count the number of turns of the drive shaft when the tire turns one full revolution. If the shaft turns slightly over 3 turn you have a 3:07, if it turn about 3 and3/4 tuns its a 3:73, et. Very scientific! But it works.
true. but im lazy. its easier just to put the numbers in here 4LO.COM :: On-Line Gear/Tire Size Calculators


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