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Old 10-05-2010, 03:53 PM   #1
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Do I need new axles for my modifications?

I have a 2 inch spacer suspension lift kit on and I want to take those out to put a 6 inch long arm kit in, I will also be adding a 1 inch body lift and 36" tires... Will I need new axles? I know I need an SYE and driveshaft but not sure about the axles. I'm running a 4.0l '98 sport edition wrangler and have stock axles. If I need new axles with 36s can I just go with 35s to prevent having to buy new axles? Thanks

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Old 10-05-2010, 04:21 PM   #2
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Assuming you have a D30 front and D35 rear - If you put cromoly axleshafts in your front D30 it might survive with 35s or 36s - depending on how you drive. However if you have the D35 rear it will be a ticking time bomb with tires that big - even with a super 35 kit I would think. Lockers will make it even more vulnerable to grenading. Some will say it is do-able, but most would advise you to at least upgrade the rear to a D44 with cromoly shafts. Ideally with 36" tires, front D44 and rear D60 would be the choice I would go for. If money permitted.

Oh - and you will also need bigger brakes.

Oh - and upgraded HD steering.

And probably some other things I'll think of later.

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Old 10-05-2010, 04:26 PM   #3
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You do not NEED them but you will want them. The D35 rear is a major weak point. I think you can keep the front and upgrade as stated above, but the rear should be a D44...however, if you will only be doing fire roads and street driving, you may be able to make the rear axle last a little while, it all depends how you drive. I have seen a D35 break with only 32 inch tires.
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Old 10-05-2010, 04:52 PM   #4
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How can I find out what axles I have on there right now? And thanks for the replies and helpful input.
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Old 10-05-2010, 04:58 PM   #5
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You have a D30 front for sure. If the rear looks like the pic, you have a D35 rear. If it has a different shape and a metal fill plug instead of rubber, you have a D44 rear. Also in the pic inset you can see where it is stamped "35".
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Old 10-05-2010, 09:04 PM   #6
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Here are a few pics of my rear axle. see what you guys can make out of it.. I have no idea which axle this is
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Old 10-05-2010, 09:11 PM   #7
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You've got a Dana 35 rear. You're going to want new axles if you're going to be running 35 or 36 inch tires. If it's going to be a mall crawler, you MIGHT be able to get by, but if you plan on using this Jeep and not being a poser, you're going to want a better rearend. And I wouldn't run 36" tires on the front, even with a chromoly axle kit. So you're probably going to want a new frontend as well.
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Old 10-05-2010, 09:15 PM   #8
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so I would need a D44 front and D60 rear for 35" tires and a 6" suspension lift and a 1" body lift? how much would these axles cost me? I've already got the other stuff I need except the axles
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Old 10-05-2010, 09:21 PM   #9
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Okay, 1st a few questions, why do ya want 36 tires? what kind of wheeling do you do? As for custom axles you could spend thousands.
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Old 10-05-2010, 09:21 PM   #10
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You could get by with front and rear D44s from a Rubicon.....IF you can find them. Another option is to do a Ford 8.8 rear swap from a late model Ford Explorer. You don't need a D60 for 36" tires. A D60 typically has a HUGE pumpkin, necessitating BIG tires to gain ground clearance. An 8.8 swap would cost ABOUT the same as a D44 once you've purchased it and had the new mounts welded to it. It's NOT a direct bolt-in, but they're in EVERY junkyard out there and they're stronger than the average D44. Any good 4x4 shop has probably done a bunch of 8.8 swaps, so they'd be able to quote you a price. As for a frontend, you COULD probably get by with a later model HP D30 from a Jeep Cherokee (XJ). They run reverse-cut gears and are reportedly about 35% stonger than our TJ LP D30s. Just some more options for you. Currie, Solid, Genuine Gear, and others sell ready-to-install diffs as well.
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Old 10-05-2010, 09:40 PM   #11
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so I should basically just go to a local 4x4 shop and ask them? everything needed for this conversion is: D44 or ford 8.8 in rear, D30 from an XJ or D44 in front, 6" lift kit, 1" body lift kit, 5 35" tires, SYE, Driveshaft... am I missing anything?
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Old 10-05-2010, 09:52 PM   #12
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new tie rod
drag link
gears front and rear
Labor for gear install about $700-$900
New Brake pads all around
new rims cant use ur stock ones (unless u get spacers)
if ur getting all 5 tires...new rear bumper w/tire carrier

what 6" kit are you going with?
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Old 10-05-2010, 10:35 PM   #13
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I was thinking Black Diamond's kit is the one that appealed to me the most. Just the basic 6" lift from them. However, seeing all of this stuff I need to install with the lift kit and tires, it may be over my budget. I might need to reconsider and try to go with a 4 or 5" lift with 33s and a 1" body lift. If I used a 5" kit with a 1" body lift and 33 inch tires, I wouldn't need to swap out my axles would I?
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Old 10-05-2010, 11:05 PM   #14
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6" of lift with 33s!??! go for the Rubicon Express 3.5" superflex kit (its actually 4-4.5") lift with 33's with ease and if you wanna fit 35's down the road get a JKS 1.25" body and you'll be fine.

RE7003 - TJ/LJ 3.5" SUPER-FLEX SYSTEM - Rubicon Express
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Old 10-05-2010, 11:10 PM   #15
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Is that in quadratec? And that sounds reasonable.
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Old 10-05-2010, 11:13 PM   #16
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Also, would I need an SYE and driveshaft for a 4 inch kit and 33s? Would my stock axles be fine as well?
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Old 10-05-2010, 11:22 PM   #17
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Quote:
An 8.8 swap would cost ABOUT the same as a D44 once you've purchased it and had the new mounts welded to it.
It depends, if you're willing to put the time and effort into it, a Ford 8.8 is a heck of a lot cheaper. If you're willing to research and learn from the 3 million guides about 8.8 gearing and weak points, then you'll spend less on a better axle. At 4 inches, you don't usually NEED one, but your drive shaft will be sitting at a bad angle and should be addressed.

I'm going the Ford 8.8 route, and I spent $200 for a axle with 4.10 gearing and a LSD from a member on here. $425 for the entire installation kit. $100 to have it welded. $100 for the brake rebuild. The rest of the work is being performed by myself and a friend who knows gearing. I'm leaving it at 4.10 with 33s for the time being, but eventually I'll be setting up to 4.88.

For a setup Dana 44, you'll spend at least $500 more and it's a weaker axle.
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Old 10-06-2010, 06:13 AM   #18
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if you wanna do it right the first time than this is this is your best bet

Its the RE 3.5" Super-flex kit (with the upper arms also to adjust your pinion angles after the sye install), w/sye and driveshaft, and shocks all as one big kit. people have given 95% great reviews about this kit. its everything you need + more.

Rubicon Express RE7000-3 3.5 Super-Flex Kit & SYE Combo and Shoc

every jeep is different some need a sye at 3" lift some can get away with it until 5" with a TC drop and MML it all depends on the jeep.

and just like burton said above me go for an 8.8 if ya have the cash after the lift, sye, and tires. if not the d35 will hold up just fine with 33's only if you dont lock the d35.
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Old 10-06-2010, 07:59 AM   #19
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Originally Posted by burton160w View Post
It depends, if you're willing to put the time and effort into it, a Ford 8.8 is a heck of a lot cheaper. If you're willing to research and learn from the 3 million guides about 8.8 gearing and weak points, then you'll spend less on a better axle. At 4 inches, you don't usually NEED one, but your drive shaft will be sitting at a bad angle and should be addressed.

I'm going the Ford 8.8 route, and I spent $200 for a axle with 4.10 gearing and a LSD from a member on here. $425 for the entire installation kit. $100 to have it welded. $100 for the brake rebuild. The rest of the work is being performed by myself and a friend who knows gearing. I'm leaving it at 4.10 with 33s for the time being, but eventually I'll be setting up to 4.88.

For a setup Dana 44, you'll spend at least $500 more and it's a weaker axle.
I assumed that since he was asking so many newbie questions (no offense, OP) that he would have to pay for the 8.8, pay to have the Ford suspension mounts shaved, pay for a TJ mount kit, pay to have someone weld the mounts to the axle, pay for gears, pay to have someone install those gears, pay to have someone install the complete rearend, etc.....that's why I said that in the end, it would cost about the same as a D44. You and I know we can do it A LOT cheaper than a D44, but I'm assuming he can't.
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Old 10-06-2010, 08:00 AM   #20
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Also, would I need an SYE and driveshaft for a 4 inch kit and 33s? Would my stock axles be fine as well?
To do it right, yes.
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Old 10-06-2010, 09:33 AM   #21
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To the OP, you are a bit all over the place.

- How are you going to use your Jeep? Are you really using it off-road (and to what extent) or is this more for street and looks?

- What is you budget and how much work can/are you going to do yourself?

- Now that you are down from 36/35" tires to 33's, to fit 33's you do not need that big a lift. 2-2.5 spring lift + 1.25" BL is all you need. (on the street, you can get by with less)
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Old 10-06-2010, 10:26 AM   #22
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yo, you should be fine if you do like a 4 or 5 inch lift with 33 inch tires. thats what i got and i have the d35 rearend. ive done some serious shit with mine and so far no brakage. the black diamond suspension is really good offroad by the way, just on the highway you can feel every little pebble. and its hell on a gravel road.
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Old 10-06-2010, 04:25 PM   #23
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Yeah I'm new to this stuff but everyone starts somewhere right? I've been a Jeep owner for two months, give me a break.. anyways.. I went to a shop today, the mechanic said I should be fine with the axles I have with 33s. He said I should get a 3" BL because he can make modifications to hide the showing of the framework and that if I wanted to do the 3.5-4" suspension lift later I could with no problems.. I just don't know how 7" of lift would look with 33" tires.. at the moment I have a 2" spacer suspension lift and 31s
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Old 10-06-2010, 04:45 PM   #24
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Run away as fast as you can from any shop trying to convince you that a 3" BL is the way to go. They don't know Jeeps well enough evidently.
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Old 10-06-2010, 04:46 PM   #25
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WOW im confused are we doing 33s, 35s, 36s. according to my wife my opinions don't count for much but I think a lot of the questions have to do with what the jeep will be used for and what kind of budget are we looking at.. if that's endless danatrack Dana 60s and and an ls1 for me please
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Old 10-06-2010, 06:48 PM   #26
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He said I should get a 3" BL because he can make modifications to hide the showing of the framework and that if I wanted to do the 3.5-4" suspension lift later I could with no problems..
NO!!! Do NOT get a 3" BL!

Quote:
Originally Posted by LovethisTJ View Post
I just don't know how 7" of lift would look with 33" tires.. at the moment I have a 2" spacer suspension lift and 31s
Okay - here's what I think you should do. Keep the 2" budget boost and add a JKS 1.25" BL and 1" MML (motor mount lift) That will be fine with 33s. Go wheel it. You will soon realize your need for armor and a winch - and maybe if you break an axleshaft - chromoly shafts. Spend your money there first. Later if you want bigger tires there are many ways you could build your Jeep. Higher lifts or low center of gravity (LCG) builds which have become more popular lately. But if it's your daily driver I think 33s are as big as you may want to go.

To give you an idea - here's me on a pretty challenging rocky section of trail - running 33s on roughly 2" of lift and a 1.25" BL - front and rear TruTrac limited slip diffs - and the lifesaver here was my engine skid, control arm skids, rocker guards, and gas tank skid - which I dented and have since upgraded to 3/16" steel.

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Old 10-06-2010, 09:22 PM   #27
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I think I wanna do the 1 inch BL for now, then when these tires wear down I'm gonna add the 3.5/4 inch lift and 33s at the same time. I think this sounds like a good starting place, like I said I have only had it for about 2 months now and have done nothing except minor mods on the interior to this jeep. So I will keep my decisions updated, and thanks for all of yalls input, it's amazing what just being a part of an online jeep community can do for you.

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