A-man930

Ok I've got my pinout, and it looks like the connector itself is the same as the '91. So hopefully I'll be able to switch just a couple of wires around and get it to work. (I'll probably be asking further questions in that area... stay tuned). Still looking for as many pictures of H.O. engine bays as I can get ahold of. Boilermaker was able to grab a few, but the more the merrier! :cheers:

Ok I've got my pinout, and it looks like the connector itself is the same as the '91. So hopefully I'll be able to switch just a couple of wires around and get it to work. (I'll probably be asking further questions in that area... stay tuned). Still looking for as many pictures of H.O. engine bays as I can get ahold of. Boilermaker was able to grab a few, but the more the merrier! :cheers:

Ok I'm gonna need some info asap guys, the only things holding me up from tearing into this thing tonight is knowing what I'm gonna have to do with this bulkhead connector issue. I'm confident I'll be able to figure out the rest of the loose ends, but I at least need to know what the configuration is on the '90-style bulkhead. I'm super-anxious to get this underway, and I don't have any issue jumping right in, but I'm going to be bumming rides and inconvieniencing my family while the truck's down... so it's not entirely up to me.

ok I've got the pinout diagram for the '91 harness, but the pdf file I have for the '90 doesn't have a corresponding picture for me to go by... Also, I could use some pictures of how the MAF sensor hooks up, and the whole right side of the engine bay for that matter. For instance: Can't find which one goes here... if I had a HO engine bay to look at it would make things easier, but I don't so pictures will have to suffice. Much thanks again

I think you got the second and third pics switched... oh well. That connector I'm holding by the throttle body definately doesn't have a place to connect to. My wiring diagram for the '91 says I should have a MAP sensor. The crank position sensor is right at the back of the head, and I don't see a cam position sensor (only two cps sensors I could come up with :???: ) The only reason I'm asking these questions is I have to make sure this harness will work before I go tearing into doing the swap. I can only afford my truck to be down for so long unfortunately. Thanks again for all the help :cheers:

Ok, I got the harness earlier today and it looks 10000000% better. Big thanks to Boilermaker! Now I've only got a few loose ends to tie up! :D Here are a couple of plug-ins that I'm not sure about... I'm assuming that a couple of these will sort themselves out when I have it in the chasis, but if anyone has any advice that would be helpfull.

I would like one more person to verify what hornbrod is telling me before I let boilermaker know exactly what to send me... just to make me feel at ease

That is the best news I've heard in my entire life I swear... Somebody else agree with him Quick! lol

Gotcha. I'll be looking into finding one of those electrical FSMs soon. I talked to boilermaker yesterday and there's still a little confusion about what what exactly I'm going to need to get from him. Mainly its the dash harness that's in question... can I re-use mine or do I need the '91 piece?? And if not, is my '90 guage cluster going to be compatable?

What's the PDC? And IIRC the renix flywheel has a the reluctor for the CPS on it (at least that's what it looked like when I had my tranny out a couple of months ago...) what does the HO sensor use?

Looks like I've got a line on straight-up trade for a harness and ecu from an AX-15 equipped '91 MJ, couldn't ask for much better! Now, what compatability issues should I expect with this swap (wiring wise)? I'll have a '90 truck with a '95 engine and (soon) a '91 harness and ecu... are there any "extra" plug-ins/sensors/do-dads that'll I'll need to deal with??

I have a new appreciation for the saying about ASSuming things... I'm retarded. The wiring harness I pulled is from a '96 XJ, I ASSumed it would work just fine on my '95 H.O. that I'm putting in my '90 MJ. Well this doesn't seem to be the case :wall: But in hopes of not making another un-informed purchase/sale, I would like to find out for sure that there is no way I could get the '96 unit to work. As stated, the ECU and complete engnie harness is out of a '96 AW4-equipped XJ, its supposed to run a '95 H.O. in my Comanche. I don't particularly want to re-use my RENIX manifolds on the H.O. motor, I'm aware that is an option. If I'm really not able to splice'n'dice to make the '96 stuff work, then exactly what harness/ECU do I need to look for to make my swap work in the easiest way possible? Thanks guys

Started tearing into my "new" motor earlier this week, she seems to be in great shape! More to come...

I used an 8.25 out of an XJ (not sure what year) and a 30 out of an '86 to '89 MJ... I did the whole axle swap for the same reason.

I went from 3.07s to 3.55s and couldn't be happier! It's close to stock as far as the speedo is concerned and I can actually use 5th gear now. And yes, you can swap the rear and wait for the front, just don't engage the case and you'll be fine.

Well they DO bolt into the bores in the knuckles just fine, that's why I didn't have any second thoughts about it untill I went to do the brakes. I've only checked on NAPAonline, I'll be able to check a little more officially tomorrow when I'm at work... If you've got any pictures that would be good.

So I have to either put my old knuckles on, or change to the correct hubs and rotors... fantastic, all I need is more money to spend! So that brings up another problem: I looked up the hub units online and the same number was listed for all years... BR930040 (NAPA number), I'll check at work tomorrow just to make sure.

I'm literally in the middle of swapping in my new(er) HP30 into my 'manche and I'm running into issues that I didn't expect, mainly because the axle is supposedly out of another MJ, turns out she is full of surprises! My biggest issue right now is with the brakes. Evidently they changed for the 1990 model year (what my truck is), and now I notice that the "new" axle isn't the same... Both axles have the CAD so I know I'm pretty limited on how many years it could be from. -On my old one the caliper mounting brackets are cast in with the rest of the knuckle, this one has them bolted on. -My original pads are physically too big to fit in the grooves that they're supposed to rest in. I got ahold of some pads for model years '86 to '89 and they fit perfectly... So I fitted up some '86 to '89 calipers and pads and called it a night. Today I notice that I've got them on backwards (bleeder screws are on the bottom) and they just look funny to me... here's some pics. Is the piston supposed to come up over the pads??? The pads rest just perfectly. Sorry for the huge pics, I ran out of time to re-size them... any help is appreciated!

Mine didn't take much to get off, just a couple of wheels and some patience. I've had good luck with DeWalt wheels

Y? Don't you know XJ sliders won't work on a MJ? :rotfl2: Hardly Image Not Found

Subscribing.

Sweet, just making sure

I've had a kit waiting to be applied for around a year now, someone told me to use 80 grit paper as well...

http://www.4wd.com/productdetails.aspx?partID=7856 Are these the bushings that are set in the axle? The picture doesn't show...

I'm about to undertake a similar swap, I'll post up the info I've gathered so far when I get a little more time.