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Old May 5th, 2007, 05:19 PM   #1
The PIG Smith
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Default WJ Axle Swap

With my ever ongoing front brake issues with my WJ and my love for Full Sized Jeeps, with access to many FSJ part resources...

...I was thinking about swaping a Dana44 from the front a Grand Wagoneer to my WJ.
Gain some lift, stronger axle for more meat and brake issue solved!

Here is an example of what I would try to pick up as a donor for my WJ Axle Swap Project:



FSJ use GM (Chevy 1/2 ton PU) brakes componets.
My Wagoneer stops on a Dime, with 31" tires and 3" lift kit.

I know the WMS (wheel mount surface) to WMS for a Wagoneer front axle is 61"
I do not know is what the WMS to WMS is for a WJ.

The Waggie axle is leaf spring mounted whereas the WJ is coil spring mounted.
A little cut and welding would fix that.

Without crawling underneath both my rigs, I am not for sure how the steering is setup on the WJ.

Both axles are Driver's drop (post 80's Wagoneer) so the diff should not be an issue.
Maybe I need to get the front driveshaft modified.

The rear axle ratio would need match the new Dana44.
Maybe swap in a Dana44 in the rear, also!
I think all these issues are solvable.

Some show stopping gotchas:
Axles width? Would be costly to have a Waggie axle narrowed.
Steering issues?
What to do with the Anti-lock brakes?

What have I overlooked?
So, how crazy I am for considering this?

As always, any thoughts, ideas, comments and flames are welcome.
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Old May 5th, 2007, 06:50 PM   #2
BigBlkYJ 355
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You also need to consider if u have the varilock axles or open diffs. Some WJ's already came with D44a's in them so you might want to just see if u already have that. If you have the varilocks you will have the quadradrive t-case which will not function right unless they match, meaning both axles have the right posi in them. If you have either quadradrive or quadratrac II you will need to look into it because you have all time 4WD which could also pose problems. The front driveshaft will need to be replaced most likely due to the ball and cage style cv joint on it instead of the u joint style you need.
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Old May 5th, 2007, 07:15 PM   #3
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Quote:
Originally Posted by BigBlkYJ 355 View Post
You also need to consider if u have the varilock axles or open diffs. Some WJ's already came with D44a's in them so you might want to just see if u already have that. If you have the varilocks you will have the quadradrive t-case which will not function right unless they match, meaning both axles have the right posi in them. If you have either quadradrive or quadratrac II you will need to look into it because you have all time 4WD which could also pose problems. The front driveshaft will need to be replaced most likely due to the ball and cage style cv joint on it instead of the u joint style you need.
Good points!

I have a Dana30 up front, Dana35 out back.

Yes, I have the Quadra-Trac II system with the NV247 transfercase.
So, I suppose that means I have varilock axles that are engaged when the 247 feels like it.
I've whined about the 247 before; on ice/slick road, if I am not careful, the rearend will come around before the front axle kicks in.
I'm told that is by design, but I perfer to have a xcase and axles that I lock in 4WD, not some system that does not know a dry road from a slick road.
So, I have adjusted my winter driving according.

So, if I dumped the Quadra-Trac II/NV247 and replaced it with a NV242, would that solve the open front diff issue?
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Old May 5th, 2007, 07:48 PM   #4
BigBlkYJ 355
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The q-trac II uses open diffs or trac-lok (i should have mentioned that in the first post i made) in 99', but the trac-lok was optional and not available with the V8. The q-drive (and only q-drive) uses only vari-lok. The 242, or select-trac was the selectable 4wd version, as you said above. So yes i would assume this would solve the AWD problems you would encounter.
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