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Old 03-03-2004, 09:38 AM   #1 (permalink)
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D30 vs. D44

I have searched this site and havent quite found what i am looking for in this subject...
i have a jeep and it has a D30 in it w/4:56. i want to get the upgrade to the stronger U joints and hubs. the reason is simply cost. it would cost me about $600 for the upgrade as compared to a couple/few thousand for a D44 with the same size ujoints.
so what i am wondering is if i get this upgrade for the D30, what is going to be the next weak point? Assuming i get some really good u joints, will my knuckle break? will my axle break? or will it be the ring and pinion?
i will be running 36" tires. and an ARB in the front.

so far with 35's and no locker and two+ years, i have yet to break anything on my front D30 with the small ujoints. .. but then again i have yet to go through little sleuce.

anyway any info on this subject would be greatly appreciated.
Thanks!
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Old 03-03-2004, 10:08 AM   #2 (permalink)
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It sounds like you are going to have all the work done for you if you are expecting 2k for a front dana44? You can swap a 44 front for much cheaper if you do it yourself, just gotta be willing to get your hands dirty. You have to look at your overall goal for your Jeep to decide if you want to polish a dana 30 or go with a 44. What kind of Jeep is this for? If you are going to swap in locking front hubs and are set on keeping the 5 on 4.5" wheel pattern, don't bother. The hubs with that set up are pretty weak and there really isn't a way to beef them up. if you really want to polish a turd then imho go with alloy inner and outer axles, and the 297 series Ujoint. I'd leave the hubs alone (ASSuming it's a YJ, TJ front dana 30). This would leave the ring and pinion as your weak point, which is not really a good fuse IMHO.

Since you are planning on using 36's and an ARB, I'd go with a 44 and be done with it. Unless you have a dana 60 . You'll spend more time and money trying to band aid your dana 30 along then if you just go with a 44 from the start. Maybe not what you want to hear, but that's my opinion.
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Old 03-03-2004, 10:22 AM   #3 (permalink)
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1st - this really belongs in the newbie section

2nd- A D30 in what Jeep? I'm guessing you have a CJ based on the u-joint comment, but it would be reallly beneficial to mention that little tidbit.
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Old 03-03-2004, 10:36 AM   #4 (permalink)
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If it's a Dana 30 in a Cj, I've seen tons of stock hubs break running 35's. I have also seen a handful of shafts bust on 35's. Go with the warn hubs and alloy's if you are going to keep it. You will kill that axle running 36's. I've seen knuckles and everything else break on 36's.
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Old 03-03-2004, 10:47 AM   #5 (permalink)
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If its a CJ no way in hell. I've seen CJ ring and pinions blow up with 31's. If its a TJ/YJ upgrade to alloy shafts and upgraded U-joints and you should do allright.

Also there is no reason a dana 44 swap has to cost anywhere near $2000. Also with longfield/CTM/ox joints a dana 44's weak spot is the shafts, even with upgraded shafts, so it is definatly an upgrade above a 30.
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Old 03-03-2004, 10:59 AM   #6 (permalink)
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I am swapping the 30 for a 44 on my CJ right now. After looking at the cost of upgrades for the 30 & the AMC 20, it was MUCH cheaper to swap in 44's from a Wag (actually mine came from a J10). If you keep your eyes open and don't get in a hurry, you can find some good deals where people are ditching set-up 44's in favor of something even beefier. Just my experience, though `
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Old 03-03-2004, 11:17 AM   #7 (permalink)
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not to jack the thread but does a stock d30 from a cj have the same size outer shafts as a yj d30 stock. there all 19 spline right
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Old 03-03-2004, 12:29 PM   #8 (permalink)
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I say just go strait to the 44, don't waste your time with the 30. If you do, you'll regret it in the long run.
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Old 03-03-2004, 12:50 PM   #9 (permalink)
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The D44 is by far the better way to go, but if you have a hard on for yer D30 you could get an ARB 30/30 kit, trus the sucker, get hardened gears for it and run drive slugs rather than lock outs.

But then again, that D44 would be cheaper after adding all that bling to yer turd 30. A D30 is save-able but at what expence.

Even with a D44 yer still gonna end up needing alloy shafts and CTMs to keep it alive under hard use........I know I did.

The real Q is why not a D60, I know I wish I had a front D60..... actually I do but it's going in the rear
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Old 03-03-2004, 12:54 PM   #10 (permalink)
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Since this is already here and not in Newbie, I'd like to ask for one clarification.

A RC D30 is stronger in a front app. gear wise than a standard D44, is this a concern? I mean I hear of U joints and shafts going but rearly gears.

I ask because I am going to upgrade my Xj and I am wondering if I can go with an early Cherokee 44 (LP but high stear possible) or a ford 44 ( RC but must swap parts for high stear.

TIA
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Old 03-03-2004, 01:00 PM   #11 (permalink)
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Ford 44 have flat top knuckles on the 3/4 versions.
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Old 03-03-2004, 03:18 PM   #12 (permalink)
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Re: D30 vs. D44

Quote:
Originally posted by Rastamon
I have searched this site and havent quite found what i am looking for in this subject...
i have a jeep and it has a D30 in it w/4:56. i want to get the upgrade to the stronger U joints and hubs. the reason is simply cost. it would cost me about $600 for the upgrade as compared to a couple/few thousand for a D44 with the same size ujoints.
so what i am wondering is if i get this upgrade for the D30, what is going to be the next weak point? Assuming i get some really good u joints, will my knuckle break? will my axle break? or will it be the ring and pinion?
i will be running 36" tires. and an ARB in the front.

so far with 35's and no locker and two+ years, i have yet to break anything on my front D30 with the small ujoints. .. but then again i have yet to go through little sleuce.

anyway any info on this subject would be greatly appreciated.
Thanks!

again..IF it's a CJ

weld the spiders....fawk the ARB
throw in some 297 joints and carry spare axles. that's all you need to do.
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Old 03-03-2004, 05:41 PM   #13 (permalink)
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A RC D30 is stronger in a front app. gear wise than a standard D44, is this a concern? I mean I hear of U joints and shafts going but rearly gears
IIRC only the XJ's and ZJ's came with RC front dana 30's, YJ's and TJ's have the regular low pinion 30. Let us know what Jeep this is for
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Old 03-03-2004, 05:44 PM   #14 (permalink)
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Originally posted by JohnnyJ
1st - this really belongs in the newbie section
Yup.


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Old 03-03-2004, 06:32 PM   #15 (permalink)
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Quote:
Originally posted by wheelerfreak
IIRC only the XJ's and ZJ's came with RC front dana 30's, YJ's and TJ's have the regular low pinion 30. Let us know what Jeep this is for

no that's not true
YJ's are RC
TJ's are low pinion
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Old 03-03-2004, 07:53 PM   #16 (permalink)
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Save yourself the hassle and do a 44. Your tires are to much to expect a 30 to handle.

Walt

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Old 03-03-2004, 09:31 PM   #17 (permalink)
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Quote:
Originally posted by wheelerfreak
IIRC only the XJ's and ZJ's came with RC front dana 30's, YJ's and TJ's have the regular low pinion 30. Let us know what Jeep this is for
I just read my post again and right below this statement i say

"I ask because I am going to upgrade my Xj and I am wondering "
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Old 03-04-2004, 04:14 AM   #18 (permalink)
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Quote:
Originally posted by deadmeat


I just read my post again and right below this statement i say

"I ask because I am going to upgrade my Xj and I am wondering "
i would shoot for a high pinion front axle if possible. not only for the stronger gear configuration but an equally valuable ground clearance attribute.
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Old 03-04-2004, 04:44 AM   #19 (permalink)
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I may be wrong, but I thought high pinion axles are inherently weaker than low pinions(of the same axle). Something abut the way the gears are cut?
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Old 03-04-2004, 06:06 AM   #20 (permalink)
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Quote:
Originally posted by Monkeybutt
I may be wrong, but I thought high pinion axles are inherently weaker than low pinions(of the same axle). Something abut the way the gears are cut?
Not up front.
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Old 03-04-2004, 06:26 AM   #21 (permalink)
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Go with a D44 up front. It'll be much better in the long run. You are asking too much from the D30 with the 36" and an ARB, IMO.
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Old 03-04-2004, 10:44 AM   #22 (permalink)
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Quote:
I just read my post again and right below this statement i say
Quote:
"I ask because I am going to upgrade my Xj and I am wondering
wash the sand out of your vag The comment was directed to the original poster Rastamon not you. He never mentioned in his post what Jeep he was talking about. Unless of course deadmeat and Rastamon are the same person, cohabitate, or share some illicit man love affair.
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Old 03-04-2004, 10:58 AM   #23 (permalink)
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sorry guys, i have a YJ. it is a 93.
the thing is i would like to get a dana 60, but i am not going to be able to afford it until next year *hopefully** so i am thinking that it would be cheaper to upgrade the D30, then next year go all out and put in the D60.
if it is cheaper to do the D44 (which i cant imagine it is...) then i would gladly do that. the problem is money. i get the D44 and i have to do a lot of modification from what i have read here on teh board. i can do the welding of things and even the gear and locker, but from what i have read most D44's dont just fit. they need to be shortened, custom axle shafts, u joints, etc etc.
plus i havent found a supplier or junkyard locally that will part with a front D44 for less than 3-400 bucks. from any vehicle. does anyone know of a place in the sacramento area who would sell me one D44 for cheap? i'd be in the market for sure.
thanks for the help, BTW.
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Old 03-04-2004, 11:28 AM   #24 (permalink)
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Quote:
Originally posted by Rastamon
sorry guys, i have a YJ. it is a 93.
the thing is i would like to get a dana 60, but i am not going to be able to afford it until next year *hopefully** so i am thinking that it would be cheaper to upgrade the D30, then next year go all out and put in the D60.
if it is cheaper to do the D44 (which i cant imagine it is...) then i would gladly do that. the problem is money. i get the D44 and i have to do a lot of modification from what i have read here on teh board. i can do the welding of things and even the gear and locker, but from what i have read most D44's dont just fit. they need to be shortened, custom axle shafts, u joints, etc etc.
plus i havent found a supplier or junkyard locally that will part with a front D44 for less than 3-400 bucks. from any vehicle. does anyone know of a place in the sacramento area who would sell me one D44 for cheap? i'd be in the market for sure.
thanks for the help, BTW.
right on TEAM YJ

ok............here's what i did:

you can get axles for the 95 YJ that will fit right in your tubes/hub bearings assembly. no mods needed. these axles will house the 297 or even the newer 760 joints. just order inner/outers for the 95 YJ. or find some used ones....either way. and pick up spares whenever you can because you will be breaking axles and spinning u-joints if you do any hardcore shit like i do.

being open is why you haven't snapped yet. even with 35's...open is the keyword here.

you already have 4.56 gears so i wouldn't go any lower and run a puny pinion gear. if you have or get the t-case 4:1 gears you will be at 75:1 crawl.

as for the ARB.......fawk that
get a detroit

run on this for a while till you get the full width 60's, BOUGHT, BUILT and INSTALLED. that can take some time.
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Old 03-04-2004, 01:39 PM   #25 (permalink)
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If yer then plannning on going to a D60 next year, then stick with the D30 and 35" tires for now, and save your bread for the D60 build up.....
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