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Old 04-16-2013, 11:19 AM   #1
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Question help with gears please!!

I am new to Jeeps and the forum, I have a 97 Tj that I bought about two months ago. Have done a few things to it and am self teaching as I did not have a lot of experience growing up. What I need help with is gear ratio, I have the 2.5 5 speed and it seems to run just fine, I have put a new valve cover on and no major leaks. 126,000 miles on it. So i read on here where to find the ratio on it, I got under it last night and I did find a circle tag and it said New Process gear, it had an assembly number and s/n number then at the bottom it had 272 ratio. My jeep has 32x11.50x15 tires and lift on it. I need guidence on where to go with this, do I need to look at regearing and at what ratio. Like I said new but very excited to learn as I go. Otherwise seems to run great, but cant keep speed on the highway here in Oklahoma. (wind) Want to be able to get into the hills and play on the family land. Thanks for any help!!!!!!!! From what I read this gear selection is way off.

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Old 04-16-2013, 11:22 AM   #2
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I just had 4.88 gears installed in my 2012 jk with 35" tires. I had previously had 3.21 and what a difference it made. it feels so right and there is no loss of power at all. I would do some research into gearing if I were you.

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Old 04-16-2013, 11:50 AM   #3
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Quote:
Originally Posted by mcalesterjeep View Post
I am new to Jeeps and the forum, I have a 97 Tj that I bought about two months ago. Have done a few things to it and am self teaching as I did not have a lot of experience growing up. What I need help with is gear ratio, I have the 2.5 5 speed and it seems to run just fine, I have put a new valve cover on and no major leaks. 126,000 miles on it. So i read on here where to find the ratio on it, I got under it last night and I did find a circle tag and it said New Process gear, it had an assembly number and s/n number then at the bottom it had 272 ratio. My jeep has 32x11.50x15 tires and lift on it. I need guidence on where to go with this, do I need to look at regearing and at what ratio. Like I said new but very excited to learn as I go. Otherwise seems to run great, but cant keep speed on the highway here in Oklahoma. (wind) Want to be able to get into the hills and play on the family land. Thanks for any help!!!!!!!! From what I read this gear selection is way off.
Welcome Aboard! Sounds like the tag you found with the ratio is for the transfer case and not the axles. This is where we welcome new members so you may not get answers. Post your questions here in the TJ forum so fellow owners may help: TJ Jeep Wrangler Forum - Jeep Wrangler Forum
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Old 04-16-2013, 12:13 PM   #4
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4.10 gear ratio (4.10 Front/4.11 Rear) likely came stock in your 4cyl 5 speed. Their should be a metal tag on your rear differential cover to verify. For 32"/33" tires, head to 4.88 ratio...costs about $1200 to get it done.
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Old 04-16-2013, 09:50 PM   #5
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I used to DD a 94 4cyl with 4.10 gears and 32" tires. It sucked. 4.56 gears would get it done but with the low power of the 4cyl you may look into 4.88s. I'm sure there are some others who can jump in and give their experiences. 32s/33s are sort of the tipping point where 4.88s start to make sense. Personally, for a DD 4cyl I would recommend 4.56. For a weekend toy that mainly sees trail, 4.88.
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