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  #1  
Old 02-25-2013, 05:55 PM
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Dr. Marneaus Dr. Marneaus is offline
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Quadra-Trac Axles and Dana 20

To keep this conversation out of my other axle rebuild thread, I've created this one.



I've searched the web and read about people swapping from a QT t-case to a D20, and keeping the stock offset QT Dana 44 rear end. I'm doing the opposite, I'm looking to throw a QT D44 under my 73 wag with a D20. So, I figure thats mostly the same. Prior to picking up the axles I did some mild research on the swap and read that its quite straight forward.

A lot of these threads all over the web just kind of end with out any results being posted, or any definite answers, a lot of hearsay.

I've read that running a D20 on a QT offset D44 'SHOULD' be fine. I haven't read a whole lot about anything with a lift. I'm running 4" lift over stock.

I'd like to hear from anybody that either swapped their QT for a D20, or anybody that has thrown QT axles under a FSJ with a D20, if you are lifted, that's even better!
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The Beast Build Thread:Marns '73 Wagoneer Thread
1973 Wagoneer - 1987 360 w/ factory 4bbl - TH400 - D20 - D30/D44
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  #2  
Old 02-25-2013, 06:04 PM
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Jeepguy77 Jeepguy77 is offline
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You can always get a high angle u joint. Tom Wood offers a unjointed for those applications. There site is 4xshaft.com
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Old 02-25-2013, 06:06 PM
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HeavyMetalThunder80something put a D20 in his Q-trac Cherokee and I don't recall him complaining about anything but tire noise and a rough ride from the lift.
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Old 02-25-2013, 06:23 PM
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HeavyMetalThunder80something


Pull your head back
Hold your hands high
Shake your body
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And your brain hurts
Fill your heads with heavy metal thunder


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I LOVE how Ristow has stolen my comment about him ... "Quoted" it ... and made himself famous for being an ***hole to people. Hahahahahahahahahha!


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  #5  
Old 02-25-2013, 06:32 PM
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http://www.youtube.com/watch?v=T9Ika-PNmHg
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i bet it was Simon....
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  #6  
Old 02-25-2013, 07:07 PM
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My 68 glad had a D20 w/ an offset D53 rearend from the factory. Will work fine. Little more work for the ujoint being at an angle.
edit: & it was lifted 4". Never had a prob.
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  #7  
Old 02-25-2013, 07:31 PM
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Dr. Marneaus Dr. Marneaus is offline
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Thanks for the derailment guys haha
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Dr. Marneaus is now officially my idol.

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The Beast Build Thread:Marns '73 Wagoneer Thread
1973 Wagoneer - 1987 360 w/ factory 4bbl - TH400 - D20 - D30/D44
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  #8  
Old 02-25-2013, 07:44 PM
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Quote:
Originally Posted by 68glad
My 68 glad had a D20 w/ an offset D53 rearend from the factory. Will work fine. Little more work for the ujoint being at an angle.
edit: & it was lifted 4". Never had a prob.

From the limited pictures I have seen of a d53 there does not appear to be nearly as much offset as the qt d44 :-(
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Originally Posted by FSJunkie
Dr. Marneaus is now officially my idol.

The Mag - The Wag

The Beast Build Thread:Marns '73 Wagoneer Thread
1973 Wagoneer - 1987 360 w/ factory 4bbl - TH400 - D20 - D30/D44
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  #9  
Old 02-25-2013, 08:27 PM
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dbabicky dbabicky is offline
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I'm putting a T-18/D-20 in my 75 J-10 which is an original TH400/Q-Trac with the offset rear. There's no issue with offset rear, just put new u-joint's in when you install it and run the heck out of it.
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  #10  
Old 02-25-2013, 10:27 PM
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Heavy_Metal_Thunder_81 Heavy_Metal_Thunder_81 is offline
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No problems with my set up, Doc. 4in spring lift, 1.5" block in the rear and 1" lift shackles in the front (About ~5inches of lift total), Dana 20 transfer case and offset rear Dana 44 axle. Been running this way for a little over 4 years now.
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  #11  
Old 02-26-2013, 07:17 AM
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I swapped the qt for a dana 20 about 4 years ago also, SOA with shackle flip in the rear, no problems other than those created by my own lack of maintenance.
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73 j-4000 "buttercup"-SOA 36's 4 door cab


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  #12  
Old 02-26-2013, 11:59 AM
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Well then, glad to hear there are a few folks in a similar situation that have had good results, that puts my mind at ease, for now at least.
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Quote:
Originally Posted by FSJunkie
Dr. Marneaus is now officially my idol.

The Mag - The Wag

The Beast Build Thread:Marns '73 Wagoneer Thread
1973 Wagoneer - 1987 360 w/ factory 4bbl - TH400 - D20 - D30/D44
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  #13  
Old 02-26-2013, 04:04 PM
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wao wao is offline
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I did this swap in my 1969 . The good news was that I could run the fuel skid plate and not interfere with the drive shaft. The bad news was the ever present vibration. I do recall going through u-joints pretty often as the offset was almost 6" more than stock 1969. I eventually took a dana-44 from a 1973 non quadra-trac Wagoneer and re-drilled the axles to 6 on 5 and a half pattern. This had the one piece axles and the correct offset. No more vibration. I had to lose the skid plate though, too close to the drive shaft. Hope this helps.
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  #14  
Old 02-26-2013, 05:23 PM
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Hmmm ... You got me thinking about this now Doc. My plan is a carbon copy of yours ... swap out the TH400/QT for a TH400/D20


Which parts have you acquired? So far I have the TH400, D20, and front shaft. They're going in my '74 J-10


I didnt know the offset was going to be such an issue. I guess I should start looking to swap out my axles.





Eventually I want to upgrade to 3/4 ton or better GVWR so I can toss a slide-in camper in the back.

Nice to have something more than a standard shell to put a roof over my head ya know.
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  #15  
Old 02-26-2013, 05:27 PM
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Dr. Marneaus Dr. Marneaus is offline
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Quote:
Originally Posted by Tigger4X
Hmmm ... You got me thinking about this now Doc. My plan is a carbon copy of yours ... swap out the TH400/QT for a TH400/D20


Which parts have you acquired?

So far I have the TH400, D20, and front shaft.

No, my plan is the opposite of yours. I already have a TH400/D20, i'm just swapping QT axles under my rig.

So, to the best of my knowledge, I have all the parts. All I need are the axles, since I already have the D20 drive shafts, the D20, the correct TH400, etc.

Quote:
Originally Posted by Tigger4X

I didn't know the offset was going to be such an issue. I guess I should start looking to swap out my axles.

Uh, apparently its NOT and issue? Did you read above? Seems to be fairly common, so far only 1 person has mentioned having issues with it, several others have said it went fine.
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Quote:
Originally Posted by FSJunkie
Dr. Marneaus is now officially my idol.

The Mag - The Wag

The Beast Build Thread:Marns '73 Wagoneer Thread
1973 Wagoneer - 1987 360 w/ factory 4bbl - TH400 - D20 - D30/D44
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  #16  
Old 02-26-2013, 05:35 PM
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My '77 wag is SOA/SF with the th400/QT with a centered rear 12 bolt axle on 37" tires. Been wheeling the piss out of it and no problems so far!

(knock on wood)
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  #17  
Old 02-26-2013, 06:29 PM
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Quote:
Originally Posted by tigger4x
Hmmm ... You got me thinking about this now Doc. My plan is a carbon copy of yours ... swap out the TH400/QT for a TH400/D20


Which parts have you acquired?

So far I have the TH400, D20, and front shaft.
Quote:
Originally Posted by Dr. Marneaus
No, my plan is the opposite of yours. I already have a TH400/D20, i'm just swapping QT axles under my rig.

So, to the best of my knowledge, I have all the parts. All I need are the axles, since I already have the D20 drive shafts, the D20, the correct TH400, etc.

Carbon Copy = opposite. Of which we were both wrong.

We are both going to be running the TH400 with Dana20 in our rigs.

And I have the axles you are looking for.



Quote:
Originally Posted by Dr. Marneaus
Uh, apparently its NOT an issue? Did you read above? Seems to be fairly common, so far only 1 person has mentioned having issues with it, several others have said it went fine.

I musta missed that somehow.

But in all reality if I could find a set of 3/4 ton axles that will work with the TH400/D20 combo then I'd like to swap them in.

I just installed a set of J20 springs up front and figure I can run a full length Add A Leaf in the rear with a supplemental air bag system.
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Old 02-27-2013, 12:31 AM
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I have always admired your rig as it is the same year as mine without the QT. If I could offer a piece of advise...don't do it. You have a great thing going with the D20 and although I really like my QT it is a distraction, do to scarce parts and the like, so I have looked into all the options and the pros and cons of axle swap. Now that being said I haven't made the switch but if I do I am going with the center pumpkin. The QT with the offset still has a bit of an angle and when coasting makes some vibration bit most of the folks I have talked to said that the D20 w/o replacing the rear axle would cause a lot of vibration and noise. I am sure many folks have done it and not saying they are wrong but we all have varying levels of tolerance. Plus the added stress to varying points is easily avoided, some to think about when you are towing the camper.

BLUF: keep it simple: D20=Center Diff; QT=Offset Diff!
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Old 02-27-2013, 09:40 AM
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Just so you know and understand, the dana 20 equipped rigs with a rear 44 are NOT centered, they are still offset to the pass side just not as much as the qt axles.
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  #20  
Old 02-27-2013, 09:53 AM
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Quote:
Originally Posted by trickc
Just so you know and understand, the dana 20 equipped rigs with a rear 44 are NOT centered, they are still offset to the pass side just not as much as the qt axles.

Yeah. This is partly why I didn't think too hard on it, but I didn't realize how mich more the qt axle is offset
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Quote:
Originally Posted by FSJunkie
Dr. Marneaus is now officially my idol.

The Mag - The Wag

The Beast Build Thread:Marns '73 Wagoneer Thread
1973 Wagoneer - 1987 360 w/ factory 4bbl - TH400 - D20 - D30/D44
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