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Old 03-08-2012, 11:13 AM   #1
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Need More Power!

Hey all, I just bought a 98 Tj with 115k, has a pretty new Jasper motor in it, (less than 30k), Its my first jeep and i drive a good 80+ miles a day to & from work. Shes a 4cyl with a 5 speed. I love this Jeep but is there any way to bump up the hp? Its lifted 0n 33's, has working ac, ( a MUST in S Texas). It came with a folder with tons of receipts on maint., motor, lift, bumpers, instructions, etc. It was well documented but cant find anything on its gearing. Has a cold air intake but thats about all i can see. Im familiar with throttle body spacer & other stuff but i need to hear from you veteran Jeep owners. Thanks for your time in advance guys & gals

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Old 03-08-2012, 11:21 AM   #2
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Id say that gearing is the first thing I would figure out. You can spend a lot of money on things that will only get you a couple hp. The real solution is proper gearing that will put you back in your power band.

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Old 03-08-2012, 11:28 AM   #3
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Old 03-08-2012, 11:29 AM   #4
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I'd get some 4.88 gears for it. You likely have 4:10's now.
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Old 03-08-2012, 11:34 AM   #5
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Ok so upgrading to 4:88's is key, what can I expect to pay for them? I'll install myself with a buddy. Done a few Stangs in my day
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Old 03-08-2012, 11:40 AM   #6
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Old 03-08-2012, 11:45 AM   #7
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Dextreme, you rock brada! Appreciate the links, So roughly about $400 n change plus some hefty shipping. We have a 4wheel parts in Sa, I'll check with them also. Will i lose bottom end? Spend more time on the highway than on trails sadly.
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Old 03-08-2012, 11:51 AM   #8
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Originally Posted by MrHix View Post
Dextreme, you rock brada! Appreciate the links, So roughly about $400 n change plus some hefty shipping. We have a 4wheel parts in Sa, I'll check with them also. Will i lose bottom end? Spend more time on the highway than on trails sadly.
You will be gaining bottom end. The stock 4:10 (2.5L/5speed) gear ratio was setup for the stock P205/75R15 tires (27"?)....so now that you have 33's, you are geared really tall. Going to 4:56 or 4:88 gears will lower your gearing getting that bottom end back.
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Old 03-08-2012, 12:29 PM   #9
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Howdy neighbor...don't forget the master install kits for your budget. You'll need one for each axle. Also that would be a great time to add front and rear lockers, super 35 upgrade....so many options...so little time. I'm up in Kerrville btw.
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Old 03-08-2012, 02:20 PM   #10
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That sounds great, would love to add lockers, but im super involved in gunsmithing right now and dont have the extra cash for lockers. I know i'll regret it when the time comes but I dont wheel that hard to warranty the purchase. Yet.....

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