YJ to XJ axle swap

boise49ers · Jan 19, 2007

I have bought axles from a 93 YJ w/disconnect and I want to put them in my 1988 XJ with the same set up. The YJ axles are larger along with the larger u-joints. Is there anything else I will need to change on the XJ before installing ? Are the seals the same ? I know they say change the seals when you pull an axle, but I've had them out 4 times and never have and they don't leak.When they leak then I will. Thanks for any help !

Gerr · Jan 19, 2007

larger diameter axel shafts will need new seals in most cases. but you can always try

boise49ers · Jan 19, 2007

Yep that is true, except I notice where the seals go on the shafts that it tapers down there. So I'm not sure if they are the same and I have no Micrometers to check. Just hoping some one knows. Also will the YJ hubs bolt up just like an XJ ? I'm trying to prevent any swap day surprises if you know what I mean. I need it for work the next day. :repair:

Gerr · Jan 19, 2007

my 89 yj has difernt knuckels than any of my xj's so I dont think the
unit bearings will bolt up unless you swap knuckels

rockwerks · Jan 19, 2007

the unit bearings are the same on all pre 91 dana 30's from my experience and if the axle shafts are the disco version with the larger U joints then they will fit into the XJ axle without any mods. This also means that the yj axle has already been converted to 95 shafts. the 93 came stock with the smaller 260 joints from the factory

jrowell · Jan 19, 2007

xjnation said:
the unit bearings are the same on all pre 91 dana 30's from my experience and if the axle shafts are the disco version with the larger U joints then they will fit into the XJ axle without any mods. This also means that the yj axle has already been converted to 95 shafts. the 93 came stock with the smaller 260 joints from the factory

x2

I installed 95 YJ axles into my 87 XJ just to gain the bigger U-joints. While you have them out, go ahead and put full-circle C-clips on them.

boise49ers · Jan 19, 2007

jrowell said:
x2

I installed 95 YJ axles into my 87 XJ just to gain the bigger U-joints. While you have them out, go ahead and put full-circle C-clips on them.

Did you have to swap seals ?

jrowell · Jan 19, 2007

boise49ers said:
Did you have to swap seals ?

Nope!

rockwerks · Jan 19, 2007

boise49ers said:
Did you have to swap seals ?

nope direct swap....... and the diameter difference is in your mind...LOL other than different U joints the axles are nearly identical

boise49ers · Jan 19, 2007

xjnation said:
nope direct swap....... and the diameter difference is in your mind...LOL other than different U joints the axles are nearly identical

You are forcing me to take pictures :laugh3:

rockwerks · Jan 19, 2007

boise49ers said:
You are forcing me to take pictures :laugh3:

No Im not I have both sets here in front of me in the garage......they are the same

jrowell · Jan 19, 2007

As I recall, I did have to knock off the tone ring on mine... other than that, no problems.

boise49ers · Jan 21, 2007

They are almost 10cms larger. Looks like about 9cm. See how they taper towards the splines like I said ? The middle broken shaft is the XJ Shaft.

xjnation said:
No Im not I have both sets here in front of me in the garage......they are the same

rcnerd · Jan 21, 2007

boise49ers said:
Yep that is true, except I notice where the seals go on the shafts that it tapers down there. So I'm not sure if they are the same and I have no Micrometers to check. Just hoping some one knows. Also will the YJ hubs bolt up just like an XJ ? I'm trying to prevent any swap day surprises if you know what I mean. I need it for work the next day. :repair:

A crescent wrench is a good makshift shaft measuring tool ie micrometer.

rcnerd · Jan 21, 2007

jrowell said:
x2

I installed 95 YJ axles into my 87 XJ just to gain the bigger U-joints. While you have them out, go ahead and put full-circle C-clips on them.

Please explain "full circle c-clips" further Thanks

rockwerks · Jan 21, 2007

where your axle broke is the same exact diameter as the other or it wont fit into the gear case. So it is the weak point. who cares if the rest of the axle is wider. it makes no difference

boise49ers · Jan 22, 2007

xjnation said:
where your axle broke is the same exact diameter as the other or it wont fit into the gear case. So it is the weak point. who cares if the rest of the axle is wider. it makes no difference

Well yeah I knew that. I figured on getting an answer like that. Kind of funny how you can read people from just reading a post. I said earlier where it tapered down. Must be wonderful to always be right even if your wrong.

boise49ers · Jan 22, 2007

boise49ers said:
Yep that is true, except I notice where the seals go on the shafts that it tapers down there. So I'm not sure if they are the same and I have no Micrometers to check :repair:

boise49ers · Jan 22, 2007

xjnation said:
nope direct swap....... and the diameter difference is in your mind...LOL other than different U joints the axles are nearly identical

OK I'm over it I apoligize for getting snippy. I got the flippin flu. This line got under my skin, but after re-reading the thread this morning I see I was being a child.

eace:

rockwerks · Jan 22, 2007

boise49ers said:
OK I'm over it I apoligize for getting snippy. I got the flippin flu. This line got under my skin, but after re-reading the thread this morning I see I was being a child. eace:

Its cool...........I thought you where trying to be funny......it worked:confused1

YJ to XJ axle swap

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