The best U Joints for the Dana 30 axle - JeepForum.com
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post #1 of 26 Old 11-16-2012, 09:37 AM Thread Starter
Dake
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The best U Joints for the Dana 30 axle

I want replace my factory U joint. What is the best brand to use? Greaseable or sealed?

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post #2 of 26 Old 11-16-2012, 09:38 AM
Anticanman
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If you're looking at the best, check out CTM.

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post #3 of 26 Old 11-16-2012, 09:51 AM
jbolty
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I have tried them all and the best, aside from CTM, is spicer. Also, I have better luck with the non greaseable; guessing the lack of a drilled hole means more metal.

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post #4 of 26 Old 11-16-2012, 09:55 AM
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Quote:
Originally Posted by Dake View Post
I want replace my factory U joint. What is the best brand to use? Greaseable or sealed?
I have never experienced the benefits of greasable. Sometimes I use them, some times I don't. I have seen them all break.
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post #5 of 26 Old 11-16-2012, 10:05 AM
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Does anyone think that the greasable function will displace water (assuming the axle is submerged) and prolong the life of the joints?

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post #6 of 26 Old 11-16-2012, 10:09 AM
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Quote:
Originally Posted by Anticanman View Post
Does anyone think that the greasable function will displace water (assuming the axle is submerged) and prolong the life of the joints?
I'm sure that's true but mine have always broken long before wearing out.

On the other hand, the spare shafts I carry are the originals from 1990 and pretty sure they have the original joints. But, my pile was never offroad until I got it.

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post #7 of 26 Old 11-16-2012, 10:15 AM Thread Starter
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Originally Posted by Anticanman View Post
Does anyone think that the greasable function will displace water (assuming the axle is submerged) and prolong the life of the joints?
Thats what I was thinking. The CTM's are a little or a lot higher than I was looking to spend. Over 200 a side
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post #8 of 26 Old 11-16-2012, 11:46 AM
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Does CTM even make u joints for the D30? All I see on their website are D60 and D44 u joints.

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post #9 of 26 Old 11-16-2012, 11:47 AM
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get a good dana spicer non greasable U joint

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post #10 of 26 Old 11-16-2012, 11:51 AM
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I always ran greasable in my CJ. I always gave them a pump after they were submerged. The Spicers didn't seems to push much of anything out but it did on the cheaper ones. I have been running the sealed one that were in my YJ for 3 years now and they are stil fine. How's that for an answer. Vague. I should be in politics = ). The only joint I ever busted was a greasable through the cap type spicer on a Dana 44.

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post #11 of 26 Old 11-16-2012, 12:02 PM
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Originally Posted by BlueRubiconrich View Post
get a good dana spicer non greasable U joint
+1 on this. When it comes to OEM Jeep Parts, you cannot go wrong with Spicer Products. If you're gonna do one side you might as well do the other. I'd reccomend sealed units. Unless you do alot of dry sandy/dirt type driving that really sucks the grease out of the U-Joints, in which a Zirk fitting is a must. I'd go with (2) Spicer 5-760X's
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post #12 of 26 Old 11-16-2012, 12:12 PM
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Originally Posted by SunDevilJeeper View Post
Does CTM even make u joints for the D30? All I see on their website are D60 and D44 u joints.
There are several ujoints that will fit different shafts for the Dana 30 axle.

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post #13 of 26 Old 11-16-2012, 12:43 PM
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I'll add here that I paint an "X" on the ujoint caps and axle ears. That way you can see if a ujoint cap spins in the axle. If it does, that means the joint should get replaced.

I've seen somewhere a joint where all 4 caps have zerk fittings in them. This allows the joint to be greasable, but without the thru-holes in the joint body. I thought that was cool, but now don't remember where I saw it, though I haven't really looked much. I run non-greaseables now.

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post #14 of 26 Old 11-16-2012, 12:54 PM Thread Starter
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Anyone run the Moog joints? I can get them today. They have greaseable and sealed.
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post #15 of 26 Old 11-16-2012, 06:29 PM
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Quote:
Originally Posted by Dake View Post
Thats what I was thinking. The CTM's are a little or a lot higher than I was looking to spend. Over 200 a side
Deals are out there.

I got 2 CTM's for $75. I will admit, it does help to be good friends with the guy who engineered them.

Quote:
Originally Posted by SunDevilJeeper View Post
Does CTM even make u joints for the D30? All I see on their website are D60 and D44 u joints.
The D44 CTM's are of the 760 flavor, so if you have the smaller Spicer 260 series axle shafts (like those that the OP has) with the smaller ear holes, the CTM's won't work (unless you machined them to accept the larger ujoint caps - but its not a good idea to install CTM's in a non-chromo type shaft. CTM's are happy with a Superior or Warn shaft).

Quote:
Originally Posted by evan1395 View Post
I'd go with (2) Spicer 5-760X's
Problem is - the OP can not run that series of ujoints because his year YJ can not fit them unless he has the ears machined.

Quote:
Originally Posted by PeteYJTJ View Post
I've seen somewhere a joint where all 4 caps have zerk fittings in them. This allows the joint to be greasable, but without the thru-holes in the joint body. I thought that was cool, but now don't remember where I saw it, though I haven't really looked much. I run non-greaseables now.
CTM's have a needle grease fitting in the top of each cap.

I ran CTM's for several years when I had a D30 up front.

CTM's have no needle bearings - which allows for the ujoint cross section ends to be larger - plus the 300M material is far superior to the "standard" material.

The caps are sleeved with bronze, and rebuild-able, plus a lifetime warranty.

260 series (not a Spicer) on the far left, Spicer 760 middle, CTM right.



Caps for each. Notice how whimpy the 260 series needle bearings are.



These are my old Warn shafts with CTM's installed.

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