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Unread 09-14-2013, 05:51 PM   #1
kpfilmz
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Gearing questions

I have a 96 zj 4.0 with a 5 inch lift and 32x11.5x15s. I daily drive my jeep but I want to go to 285/75s (33s). I average 15 mpg with mixed driving but I am at the limit of my gearing. I live at the beach so it's all flat but I'm curios of the cost to regear, what gears, and mpg gain from gearing

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Unread 09-14-2013, 08:00 PM   #2
Technohead
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1.) You will NEVER recover the cost of regearing from improved mileage.
2.) Expect to spend a MINIMUM of $1,000 per axle to regear properly. Double that if you want to add traction
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Unread 09-14-2013, 08:02 PM   #3
dave_dj1
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First off you will probably not gain any gas mileage. Bigger rolling resistance and the height, it's like you are pushing a box down the highway.
As far as cost, it will vary but probably would be in the 1200 dollar range for both axles. Say 300 a piece for gears and install kits and 300 each axle for labor, depending on where you go for service.
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Unread 09-14-2013, 08:18 PM   #4
kpfilmz
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Quote:
Originally Posted by dave_dj1
First off you will probably not gain any gas mileage. Bigger rolling resistance and the height, it's like you are pushing a box down the highway.
As far as cost, it will vary but probably would be in the 1200 dollar range for both axles. Say 300 a piece for gears and install kits and 300 each axle for labor, depending on where you go for service.
Thanks for the info
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Unread 09-14-2013, 08:28 PM   #5
PolkaPower
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I get better MPG in my niner than that hahaha
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Unread 09-14-2013, 09:56 PM   #6
Texas ZJ1
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Regearing will get your stock mileage back. Do it, you won't regret it.
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Unread 09-14-2013, 10:19 PM   #7
kpfilmz
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Quote:
Originally Posted by Texas ZJ1
Regearing will get your stock mileage back. Do it, you won't regret it.
That would be nice
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Unread 09-15-2013, 12:11 AM   #8
PolkaPower
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You can consider a V8. If you have not owned one I would give it a shot. You won't go back. The 4.0 isn't a bad trail beater but the V8 is great all around.
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Unread 09-15-2013, 09:43 AM   #9
jorhay
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I just paid just shy of $700 for R&Ps and master install kits for a 30/44a and paid a very friendly $300 cash for the install. 4.10s make the 32s a lot better, but haven't hit the highway yet
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Unread 09-15-2013, 09:56 AM   #10
kpfilmz
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What gears would be suggested for a daily driver with 285/75s (33s)
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Unread 09-15-2013, 10:00 AM   #11
riot1987
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I would go with 4.56's. ...Maybe 4.88's but that may be too deep. That 4.0 is working pretty hard to move those 33''s so 4.88's would def give you a lot more power to the wheels but might end up killing some of your highway driving
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Unread 09-15-2013, 10:01 AM   #12
riot1987
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check this out
gear_ratio_chart.gif

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Unread 09-15-2013, 10:16 AM   #13
kpfilmz
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Quote:
Originally Posted by riot1987
check this out
Thanks I will probably go with 4.11s
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Unread 09-15-2013, 10:21 AM   #14
PolkaPower
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4:11's are a waste. You should go with 4:56
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Unread 09-15-2013, 10:28 AM   #15
riot1987
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Quote:
Originally Posted by PolkaPower View Post
4:11's are a waste. You should go with 4:56
I agree. Youll feel a difference with 4.11's but I believe 4.56's will be more bang for your buck. And the price difference between the gears wouldnt be much at all.
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