Dumb MJ ?

Shanbo44 · Oct 6, 2004

I have an 88 XJ and just bought an 86 MJ to use as a work truck. My questions are...

engine... 2.8 V6
Tranny ???
T-case... 207
Front axle ???
Rear axle ???

It is a manuel tranny, and it has the XLS package if that means anything.

And yes I did search.

Yucca-Man · Oct 6, 2004

Shanbo44 said:
I have an 88 XJ and just bought an 86 MJ to use as a work truck. My questions are...

engine... 2.8 V6
Tranny ???
T-case... 207
Front axle ???
Rear axle ???

It is a manuel tranny, and it has the XLS package if that means anything.

And yes I did search.

4 or 5-speed tranny? AX-4 = 4-speed...AX-5=5-speed. NP207 t-case. D30 front; the rear is probably a D35 but could be a D44...what's it look like? http://www.yuccaman.com/jeep/gear1.html#axle

Eagle · Oct 6, 2004

Actually, the heavy-duty axle in 1986 was not the Dana 44 but the AMC Model 20. It's easy to recognize -- it's HUGE, and the diff cover is a perfect circle. There's no predicting where it may show up -- there's a Shell gas station down the road that has an 86 MJ 4-cyl that they use for plowing the driveway, and it has the AMC Model 20 axle.

Shanbo44 · Oct 6, 2004

Yucca-Man said:
4 or 5-speed tranny? AX-4 = 4-speed...AX-5=5-speed. NP207 t-case. D30 front; the rear is probably a D35 but could be a D44...what's it look like? http://www.yuccaman.com/jeep/gear1.html#axle

yucca, thanks I have been trying to find that page for an hour! It is a 35.

Its a 5 speed, and if its a D44 it would not last long in the MJ.

Yucca-Man · Oct 6, 2004

AMC20? No kidding? Was it the good one out of the SJ, with one-piece axles or was it the problematic CJ version?

Shanbo - glad I could help.

Jeff in VA · Oct 6, 2004

One piece shafts. Look up Pete M on here or the MJ Yahoo group http://autos.groups.yahoo.com/group/jeepcomanche/

He's running a 20 in his MJ.
Jeff

Pete M · Oct 8, 2004

The big SJs are known to bend the tubes due to the big Jeeps' weight. The CJs are known to spin the 2-piece shafts due to whatever idiot thought up using 2-piece shafts. The MJ has neither of these issues.

Plus, it's about as unique as axles get. Only one year, on one model, on one optional package. Most seem to come with 4.10 gears too.
Jeep on!
--Pete

This one is mine:

Dumb MJ ?

Shanbo44

NAXJA Forum User

Yucca-Man

NAXJA Member # 683

Eagle

Lifetime NAXJA Member

Shanbo44

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Yucca-Man

NAXJA Member # 683

Jeff in VA

<---respect

Pete M

NAXJA Forum User

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