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Old 07-20-2010, 11:20 AM   #1
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NEW MEMBER, NEW JEEP new question!

hello all!
I am new to the forum and I have been reading for a week or two and I have learned a lot about my new jeep! thank you verrrry much! I posted a pic, let me know what you guys think! it's an 04 with 4.0l, 5spd with 40,026 miles on it! now my question is, is that I think it's a dog! lol... well I know it's a jeep and all, but on the interstate in 5th gear I can't maintain 60mph. In 4th ill get it to 70is and when I go to 5th it slowly drops to about 55. I did read something about re gearing the axels? So what do you guys think! ohh and also if I have the AC on forget about it! it has nooo pick up! now I know I have 35 all-terrains, so is that the magical number? what do I have to do? I was thinking new gears... but what ratio? and maybe an electric fan. well if any of you guys can help that would be great! thanks in advanced! also I would like to add that I am the second owner on this and all the add ons were just added right before I bought it! It has never seen mud! I know I can't believe this! but there is no mud on top of the gas tank or any on top of the tranny. I am very mechanically inclined and I have a decent amount of tools, but I donít know much about suspension mods or 4x4s.... lol, Im more of a MARK IIII 454BB wedged into a 4th gen camaro kind of guy! lol.... but I soooo do love this jeep! there is nothing like it!
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Old 07-20-2010, 11:23 AM   #2
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I believe 4.88 is recommended for a 5 speed and 35s. Nice lookin jeep, and welcome to the forum

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Old 07-20-2010, 11:38 AM   #3
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Very Nice. I really like the red accents on silver. Welcome to WF
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Old 07-20-2010, 11:41 AM   #4
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Nice Jeep....Best of luck!
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Old 07-20-2010, 11:42 AM   #5
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Welcome. Do you know which rear axle you have? dana 44(metal fill plug) or dana 35(round plastic fill plug)?
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Old 07-20-2010, 11:44 AM   #6
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Great looking ride.
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Old 07-20-2010, 11:44 AM   #7
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Beautiful rig.

I've always loved the Silver and Black combo.

Mine's just black.

Not "Blacked out" like all the cool kids. Just normal black like from the factory.

Boring...but inexpensive.

I really like your look.

Cant comment on the top-end. Mine cruises 80 on 31" without much trouble. (auto)

I can see some room for aerodynamic disadvantage with the lift, but I cant imagine it would generate THAT much additional drag.

And I would think that once you got up to a cruising speed....the drive train should be able to MAINTAIN that performance. Getting there should be the problem.

As the name says...I'm just a noob. Thinking out loud.

But it is a curious topic........
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Old 07-20-2010, 11:45 AM   #8
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Nice lookin jeep! I as well love the red accents.
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Old 07-20-2010, 01:11 PM   #9
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Welcome to the forum! As 4Jeepn mentioned above, your rear axle is going to be key here. Look at it to determine which one you have, and on the metal tag will be your current gearing. If you have a D35, you will most likely want to downsize your tires, or upgrade your axle. I'm guessing you do since it's that doggy. D44's come with 4:10 gears which aren't ideal for 35's but shouldn't be such a dog.

Here's a chart to help you identify your axle:
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Old 07-20-2010, 06:51 PM   #10
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Thanx.....!

WOW.... thanks for all the comps! you guys are great! it quick responses! here are pix of my axels! i think they are 30 up front and 35 in back! so what do you think? i have to swap them? were would i find new ones? i could do the swap myself, just dont want to get ripped off with the new ones? and wouldnt bigger make it slower? and if i dont do much off roading, couldnt i just swap out the ring and pinion? why are these axels so bad? and also the clutch is getting bad! i think, or well at least the throughout bearing is going bad! its sounds super bad! like metal balls in a can when the clutch is out while not in gear! could that be making it super slow??? well either way i need to find the power i think the jeep has lost! because im so not exaggerating! its a slow slow dog! lol... but i love it! and with the low mileage and it being super clean i would think it because of the lift and tires! so i guess im asking "help! what do i do?" lol... and i dont want to go with smaller tires! i like the all terrains and i like the 35s
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Old 07-20-2010, 06:57 PM   #11
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Its recommended swapping at least the rear axle when you go up to 35's. It cant handle the stress that size tire will put on the axle. You can probably find something at a junkyard, such as a dana 44. As for the front axle, I have heard quite a few people say that a D30 can handle quite a bit of abuse, even with 35's. As far as gaining your power back, you will want to change your gears...and with a manual I believe 4.88's are the good choice for 35's. With this you will gain back some power, and she wont be such a dog
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Old 07-20-2010, 07:03 PM   #12
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cool, ill have to see what i can find! do you think im in any harm driving the way it is for now? i wont be off roading or hot rodding? ill see if i can find a 44. then i guess i have to regear it! lol... also do i need to regear the front if i do the rear? or will it be all messed up in 4wd?
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Old 07-20-2010, 07:39 PM   #13
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If you can find a D44, it should have 4:10's which will be better than what you have now most likely. Did you clean off the tag to read the gearing? The gears in front and rear must match if you want to engage 4WD. Pretty sure GroundHawg is right about lower than 4:10 being better for 35's. If you are easy on the gas, you'll be ok for a while, maybe forever, there are some conflicting schools of thought on that... (like everything else). I'm guessing you figured out why the PO chose to get rid of it right after adding all the upgrades... Not that it's a real problem, I'm sure they just didn't want to throw any more money at it, and maybe afraid that they'd messed it up completely.... good news for you!
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Old 07-20-2010, 07:48 PM   #14
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Great looking Jeep! Welcome to WF!
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Old 07-20-2010, 09:01 PM   #15
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Infernogirl pretty much hit it all. If you are easy on the gas and arent offroad, you can probably last for a little while, but most wouldnt recommend keeping it that way. You CAN regear just the rear if its absolutely necessary, but you WILL NOT want to use 4wd if this is the issue. You can ruin a lot of things that way and put yourself deeper in a money pit.
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Old 07-20-2010, 09:37 PM   #16
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O/T where in SC are you located?

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Old 07-20-2010, 10:07 PM   #17
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Great looking Jeep! Looks like it hasn't been abused or taken off-road either, that undercarriage almost looks clean enough to eat off of. As for the axles, I've got the d30/d35 as well. That was the biggest reason I didn't go any larger than 33's with the tires, call me paranoid.

If you've got the money to do it, upgrading to a d44 or s35 rear and re-gearing at the same time would probably be the most cost-effective solution. Doing it all at once saves you from needing to do it twice. That was one of the ideas I tossed around for my own when I wanted 35's, but decided against it due to the huge jump in costs for an extra 2".
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Old 07-21-2010, 11:44 AM   #18
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well thanks every one! i think what im going to do is regear the front to match the rear and ill get a new rear axel! ill see what i can find! (and oranjeep im in charleston/summerville area). so you guys dont then 4:10s would be enough? 4:88 seem super steep! and thanks for the under carrage comment! lol... i do like to keep it clean! lol... i was so excited to find one this clean! so its alot easier to keep it that way! i got a great trany guy who does gears too, so the job wont be too bad for me! i cant find on my axles what gears i have now in the 30 and 35s??? does any one know what they should be? and any one have any other comments on the 4:88s? well thanks again every one! you guys are a great help!
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Old 07-21-2010, 11:53 AM   #19
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You probably have something around 3.73 in there right now. It MIGHT be on the front axle on that little label on the left in your picture, I dont know if they label both differentials or not. It doesnt look like the label is on your rear anymore though. My understanding though is that the 4.88's will return you back close to factory power, so 4.10s wont be enough, although they will be an improvement on the gears you have currently
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Old 07-21-2010, 12:00 PM   #20
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cool... i just when and looked and on that tag it says:

2509919 3AE
3 07 611312-1

so is that saying i have 3:07?
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Old 07-21-2010, 12:03 PM   #21
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It sounds like it may be, I know that is a common gearing on jeeps also.
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Old 07-21-2010, 12:08 PM   #22
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i think it may be as well! im gonig to mark my drive shaft and spin the wheel this weekend and ill find out what it is for sure! lol... just count the revolutions! so it would make sense why i cant maintain 60mph in the highway if they are the 3:07s. so do you still think 4:88s?????? hmmmm........ ? thanks agian for your time man!
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Old 07-21-2010, 12:12 PM   #23
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I would still do 4.88. Ive done reading other places, and there is a senior member on here, Jerry Bransford, who also recommended that gear ratio to me with a I6 and 5 speed (thats also what I have)
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Old 07-21-2010, 12:17 PM   #24
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Here is a thread I started awhile ago when I was looking for the same answer you are. Jerry also recommends the 4.88s in post 7. This thread also reminded me about another option you can look into which is Superior's Super 35 kit.

http://www.wranglerforum.com/f5/been...ons-47492.html
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Old 07-21-2010, 02:14 PM   #25
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Yep, you have 3:07's that's why it's such a dog... Like everyone said gear it to 4:88's front and rear and you'll regain all your lost power.
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Old 07-21-2010, 03:03 PM   #26
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Originally Posted by 06challenger View Post
WOW.... thanks for all the comps! you guys are great! it quick responses! here are pix of my axels! i think they are 30 up front and 35 in back! so what do you think? i have to swap them? were would i find new ones? i could do the swap myself, just dont want to get ripped off with the new ones? and wouldnt bigger make it slower? and if i dont do much off roading, couldnt i just swap out the ring and pinion? why are these axels so bad? and also the clutch is getting bad! i think, or well at least the throughout bearing is going bad! its sounds super bad! like metal balls in a can when the clutch is out while not in gear! could that be making it super slow??? well either way i need to find the power i think the jeep has lost! because im so not exaggerating! its a slow slow dog! lol... but i love it! and with the low mileage and it being super clean i would think it because of the lift and tires! so i guess im asking "help! what do i do?" lol... and i dont want to go with smaller tires! i like the all terrains and i like the 35s
So now I am a little confused. The top image attached looks like the 44 pattern infernogirl linked?

Can someone explain the difference?
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Old 07-21-2010, 03:13 PM   #27
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This is a DANA 44


This is the DANA 30


The shapes are a bit different. The dana 44 is also a much stronger axle
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Old 07-21-2010, 03:25 PM   #28
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Sorry, re-read my post and it didn't get to my point. My question is basically why does infernogirl's bolt chart show bolt locations centered on each side of the diff cover for a Dana 30? Is there an internal alignment post?
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Old 07-21-2010, 04:36 PM   #29
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thanx for the post man! it help alot! i think im going to look to find a whole complete package deal with a dana 44 with the 4:88s for the wrangler and ill just swap the whole thing out one for one! ..... then problem solved! ..... but i have noticed they run like 2 grand! ouch!!!! but you gotta do what you gotta do! thanks for all the help!
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Old 07-21-2010, 04:39 PM   #30
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thanx for the post man! it help alot! i think im going to look to find a whole complete package deal with a dana 44 with the 4:88s for the wrangler and ill just swap the whole thing out one for one! ..... then problem solved! ..... but i have noticed they run like 2 grand! ouch!!!! but you gotta do what you gotta do! thanks for all the help!
You may look into some local junkyards or pick and pulls to see if you have any luck, they would be much cheaper.

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