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Old 02-08-2009, 01:42 PM   #1
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Making my Jeep more streetable

Hello everyone, I'm a newb here!

I have a 91 Wrangler with a 4.0L and 5spd. It has a 4 inch Skyjacker suspension lift and a 1.25 inch shackle lift. 35" tires with stock axles (ouch).

I really like this Jeep and its in pristine condition, but its horrible to drive on the street. 5th gear is worthless on the highway. I have owned this thing for years, but have only put about 1,000 miles on it within the last 4 years. I just don't drive it because its a pain.

My original plan was to lift it, put big tires on it, and then put big axles with good gearing in it. The axles are not going to happen. Its just way too expensive and I don't have the time to fab anything.

My next plan is to remove the 35" tires and go down to a 31". The problem is that it will look goofy with small tires, 5.25 inches of lift, and TJ flares. I was thinking that maybe I could remove one leaf from each spring pack to lower it down a little bit. I was also hoping that this would lower the spring rate a little bit and result in a softer ride (this thing rides like a tank). Approximately how much height will I lose by removing one leaf?

Sorry for the extremely long post.

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Old 02-08-2009, 01:58 PM   #2
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First, welcome to the forum. You have some pics you can post? I think it would be better if you went to 33s instead of 31s and that would fill the wheel well more and not look so "goofy". Just my opinion.

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Old 02-08-2009, 02:08 PM   #3
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I believe that it's a Jeep code of order, somewhere, that you're NOT allowed to use the works Jeep & Street-able in the same sentence.......I need a judgment call on this.....

J/K Welcome to the forum!!!!
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Everything else is O-ridge-in-AL!!!!
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Old 02-08-2009, 02:09 PM   #4
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Ditch the schackles. Grab some 33's. What kind of shocks are you running? That might be part of the issues for the ride.
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Old 02-08-2009, 02:11 PM   #5
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Here is a pic of it:



I thought of going down to 33's, but the 3.07 gears were lousy even with the 30" tires that it came with. The shocks are Skyjacker Nitro's (they came with the lift). The only think I like about the longer shackles is that it rides a bit smoother with them. I put the stock shackles on a Samurai I used to own, so I would have to buy new ones if I wanted to replace them.
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Old 02-08-2009, 02:30 PM   #6
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I believe that it's a Jeep code of order, somewhere, that you're NOT allowed to use the works Jeep & Street-able in the same sentence
I know, I know. I figured I would take some heat for this. The truth is that I don't get to take it off-road anymore. There is just nowhere to go where I live. Someday I hope to live somewhere where I can, but for now I will just have to deal with keeping it to the streets.
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Old 02-08-2009, 02:57 PM   #7
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You have 35s and still the stock 35s gears?

I would regear instead of installing some smaller tires.
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Old 02-08-2009, 03:13 PM   #8
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It would be cheaper to put 4.10 gears front and rear than buy new tires.
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Old 02-08-2009, 03:20 PM   #9
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Or better 4.56...
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Old 02-08-2009, 03:23 PM   #10
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Or better 4.56...
True That
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Old 02-08-2009, 03:35 PM   #11
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It would be cheaper to put 4.10 gears front and rear than buy new tires.
How so? It seems like it will cost a small fortune. Doesn't re-gearing a stock 3.07 D35 axle to anything numerically higher than 3.55 require a new differential? Is it worth it to invest any money into the stock axles? I get the impression that everyone seems to think the stock axles will self-destruct if you so much as look at them funny.

I can afford to spend a few hundred dollars on tires, but not a few thousand on axles. I can probably find someone to trade me a set of 31" tires for my almost brand-new 35" Goodyear MTR's. I'm not enjoying my Jeep at all with it sitting in my garage collecting dust. I'm just trying to find the best solution to be able to drive it again.
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Old 02-08-2009, 03:41 PM   #12
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The stock D30/D35 axles are ok with 35" tires for on road use and soft offroading.
For higher gears you need a new diff carrer, but if you donīt want a locker thatīs not very expensive.

Trading 31s for your 35s is the cheapest way. But how would your nice YJ look with only 31s? IMO itīs better to keep the 35s and to modify something else like the gears.
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Old 02-08-2009, 04:01 PM   #13
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I meant just throwing a 4.10r D30, D35 out of a 4 cyl. in it. It is very cheap. I put a pair in mine for $250.00.
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Old 02-08-2009, 04:12 PM   #14
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I meant just throwing a 4.10r D30, D35 out of a 4 cyl. in it. It is very cheap. I put a pair in mine for $250.00.
I didnīt know that Jeep axles are that cheap over there.
That would be a very good idea. And itīs done in less than one day. Bolt-On.
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Old 02-08-2009, 04:28 PM   #15
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I didnīt know that Jeep axles are that cheap over there.
That would be a very good idea. And itīs done in less than one day. Bolt-On.
I bought the axles and a NP231 transfer case for 350.00. I put a SYE kit in/on the transfer case while mine was still in and just switched them when I did the axles. What was he saying about the higher ratios not fitting? I'm not familiar.
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Old 02-08-2009, 04:33 PM   #16
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There are 2 different diff carriers available for the axles.

D30:
carrier for ratios up to 3.55
carrier for 3.73 and higher ratios

D35:
carrier for ratios up to 3.31
carrier for 3.55 and higher ratios

D44:
carrier for ratios up to 3.73
carrier for 3.92 and higher ratios
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Old 02-08-2009, 06:37 PM   #17
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I'm running a 4 inch lift, 2inch shackle lift with 33's and 3:07 gear ratio and mine still runs like a raped ape!! I do use super for gas and it does make a difference. I'm also running Skyjacker Nitro 8000 shocks. One thing u may check into is getting soft ride leaf springs. It will soften the feeling of riding on rocks, been there done that... Also, if your shocks are a bit old, maybe just changing them will help some too, been there done that as well.

T
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Old 02-08-2009, 06:49 PM   #18
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I'm running a 4 inch lift, 2inch shackle lift with 33's and 3:07 gear ratio and mine still runs like a raped ape!! I do use super for gas and it does make a difference. I'm also running Skyjacker Nitro 8000 shocks. One thing u may check into is getting soft ride leaf springs. It will soften the feeling of riding on rocks, been there done that... Also, if your shocks are a bit old, maybe just changing them will help some too, been there done that as well.

T
If you like it with 3.08's and 33's put in 4.10's like I did and you'll be very pleased. It makes a big difference. I toar the s(*& out of it when I had my stock ratio a 3.07 in my 4.0, manual YJ, but now I do it better.
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Old 02-09-2009, 12:10 AM   #19
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Where could I find a set of 4.10 axles? I have never seen a Wrangler in a junk yard.

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