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Old 01-27-2014, 12:14 AM
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Uh, do I need new axels and what swaps?

I have a 1994 YJ, going to be putting some 31s or 33s on it eventually- and I might go a clutch type locker. My little Wrangler is a four banger. I haven't even ID'd the axels yet- but reading some posts here gets me to thinking- is it that easy to break axles on my jeep and do I need to swap- and what should I look for? I am guessing that anything Coil spring won't work from a coil spring jeep?

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Old 01-27-2014, 12:26 AM   #2
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What are you wanting to do with your jeep?

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Old 01-27-2014, 12:29 AM   #3
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you can go with a ratchet locker if you are on a budget One of the guys that wheels with me has a 4banger with 488gr,37", and ARB lockers and does real good with it.
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Old 01-27-2014, 01:06 AM   #4
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If your axles are stock, you have a Dana 30 HP in the front, and a Dana 35 in the rear. With 4.10 gears.

If you are only going to 31" tires then all you need is the lift, but if you are going to 33" tires then you will need to re-gear with a set of 4.88 ratio gears.

You wont need any different axles in your machine if you keep the 4 popper motor, cause it doesn't make enough torque to hurt anything in the drivetrain.

Its when you have a 4.0L 6cyl., that's when you would want a different rear end, but then again it isn't needed for 33's as long as you are sensible when you wheel. I ran a D35 on 33's for 10yrs. without a problem.
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Old 01-27-2014, 10:02 AM   #5
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If your axles are stock, you have a Dana 30 HP in the front, and a Dana 35 in the rear. With 4.10 gears.

If you are only going to 31" tires then all you need is the lift, but if you are going to 33" tires then you will need to re-gear with a set of 4.88 ratio gears.

You wont need any different axles in your machine if you keep the 4 popper motor, cause it doesn't make enough torque to hurt anything in the drivetrain.

Its when you have a 4.0L 6cyl., that's when you would want a different rear end, but then again it isn't needed for 33's as long as you are sensible when you wheel. I ran a D35 on 33's for 10yrs. without a problem.
I have 33's on my 2.5L with stock 4.10 gears. No complaints. I guess it's personal preference. I suggest running stock gears first and then change if you feel the need.
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Old 01-27-2014, 01:08 PM
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I do mostly commute to work on days and lots of lava rock crawling to the beaches on weekends. Unique enviroment. Wiapio valley is the worlds steepest paved road- not for the faint of heart.

Waipio Valley - Wikipedia, the free encyclopedia

I bought the jeep because it has a four banger and I need the mpg- it looks more and more like 31s are the tire for me LOL
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Old 01-27-2014, 01:23 PM   #7
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With the type of use you described I honestly don't think you need new axles.
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Old 01-27-2014, 03:21 PM   #8
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I don't either. However, if you go to 33's you'll want to regear to 4:88's to make up for lost power. The 4 banger is a great motor, but it's lacking in the power dept.

Just remember to take it easy on the rocks. The weakest link is the rear Dana 35. They don't call it the "turdy 5" for nothing. I busted one all to pieces by power shifting a 4 banger with 31's on it. This was on pavement tho. I can't afford to drive like that these days lol.
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Old 01-28-2014, 02:15 AM
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I know where a guy has three jeeps with factory sixes in them- I did not look close enough to see what models they are. If I were able to get a matching front-rear set, what swaps to my jeep? Got to cut off spring perches if coil over and weld on leaf spring type? I am a certified welder, so I can do some fab work, just would like to know what kine
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Old 01-28-2014, 06:51 AM   #10
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More than likely the 6 banger Jeeps have the same axles as your 4 banger Jeep. Dana 30 front, Dana 35 rear. There are some exceptions, as the Dana 44 was an option on some Jeeps for the rear.

If you get them out of a TJ (97-06) they'll be set up for coil springs & you'll have to cut the coil spring components off & weld on pads for leafs.
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Old 01-28-2014, 12:45 PM   #11
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I know where a guy has three jeeps with factory sixes in them- I did not look close enough to see what models they are. If I were able to get a matching front-rear set, what swaps to my jeep? Got to cut off spring perches if coil over and weld on leaf spring type? I am a certified welder, so I can do some fab work, just would like to know what kine
Don't take axles from a 6 cylinder, they'll have 3.07 or 3.55 gears.
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Old 01-28-2014, 06:26 PM
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Good info- thanks guys! Where should I look for better axels for my jeep, just in case I run across the right thing in my travels? Lets pretend I want to run 33s ? Where is the best kind of vehicle to find what I want? I have to scrounge on island, obviously.
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Old 01-28-2014, 06:52 PM   #13
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Ford explorer 8.8 rear end. yes you'll need to fab spring hangers, some one will come along and tell the right year models, some where in the 90s, Oh and the Merc. SUV that was same thing as Ford.
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Old 01-29-2014, 09:07 AM   #14
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Ford explorer 8.8 rear end. yes you'll need to fab spring hangers, some one will come along and tell the right year models, some where in the 90s, Oh and the Merc. SUV that was same thing as Ford.
Its about 96 to 2000. There is a gear ratio code chart around here dont have it handy now. But it tells code on the door for what gear and posi or not. My next project is find a 410 posi 8.8 and fab it in. No regear as our yj is 410 now..
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Old 01-29-2014, 11:28 PM   #15
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The gears you have should do you good for what are wanting to do not. Always go with rule of thumb If it is not broke don't fix it. Go run what you got until you brake it then spend the money to step up a size.
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Old 01-30-2014, 01:31 AM
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The gears you have should do you good for what are wanting to do not. Always go with rule of thumb If it is not broke don't fix it. Go run what you got until you brake it then spend the money to step up a size.
I live on an island made of lava- I always have to assume it will break and I will have to fix it and it will be expensive unless I search ahead of time LOL

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