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87 4Wd Conversion.


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Hello everyone. My name is Joseph. I am new to this sight but reading through everyone's post I felt this was the place to come to for some questions.

I have a 87 2wd comanche that was given to me. While it has no motor (but have disassembled, original owner told me it's needs to be rebuilt) at this moment it had a 4.0 originally, I believe the transmission is the ba10/5.

I have a awesome running 96 cherokee that's 4wd. I want to do a engine swap along with the 4wd. I understand the transmission will need to be swapped to, it's a aw4, along with the transfer case. I understand I will have to shorten the drive shaft and all looks pretty straight forward except I guess for the fuel pump. Will the original pump cause me problems, and if so what can I do about this. And what about the electrical. Can I use the wiring harness from the 96 cherokee.

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Thank you for the responses so far. I'm super excited to start on this project. I hail from Red Bluff in Northern California. Plans for this week intail stripping the cherokee down, bagging and labeling everything. I originaly planned on taking the manifold, exhaust, and injectors from Renix and putting them on the HO and using the wiring from the comanche, but further investigating showed that this will not succeed. The main reason is that I will need the cherokee computer and wiring for the aw4. I guess that that leaves me with a complete transplant. I have never tackled a project quite this large but I believe patience and motivation will carry me through. After all the reading I have manged thus far I guess what makes me the most nervous is the electronics, more specifically transplanting the gauge cluster. I'm also not quite sure if the OBDII system will cause me a head ache. Any help and advice those who succeeded in such a project will be much appreciated. Thank you for your time. Joseph

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Sounds like you got your head around what your doing, since its a total transplant gut one, replace with the other.

Tail lights would be about your only wiring hurdle, but easily overcome, I think the data is in the "what is the most important tip you'd share with MJ owners" file.

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if you swap the XJ over wholesale, I think the fuel tank level wires need to be switched.  something in my brain says they flipped them along the line and so an early sender with a later gauge (or vice versa) would give you a backwards gauge.

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Thank you for the information Pete. I'll be sure to keep this in mind.

Well today when I get off work I'm going to start stripping down the cherokee. I bought a few boxes of zip locks and a package of sticky labels at our local Wallmart so I can label everything as I disassemble. I'll be sure to take a zillion pictures as I progress. Since this will be my first project on this scale would any be willing to offer advice on the order they would take the cherokee apart. I have a general idea on how I might do it but would be much happier with a little advice from one much saltier.

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Take lots of pics. Mark or label everything as you remove it, Baggies is a big help here. Memory is a funny thing, You start putting something back together again, it's amazing what you've forgotten.

Why is everything I'm typing underlined?

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Ugh terrible news, called into work for another shift so the dismantling will take place tomorrow, or at least some of it. A few questions though.....

1) Can I keep the same steering column?

2) Will the gauge cluster from a 96 Cherokee fit into a 87 comanche (the dash is inch better shape).

3) I have heard somewhere a little rhetoric about the cherokee haveing airbags and the comanche not, will this affect me, if so how to work around?

Once again thank you for everyone's time.

Joseph

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Best way, use the Cherokee column and dash. EVERYTHING from the Cherokee into the Comanche SHELL.

You definitely need to use the cluster from the XJ (HO) dash and column because they are HO also.

 

 

x2.  the only things you should be reusing from the MJ are the MJ-specific things like the gas tank, rear lights, etc.

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... all looks pretty straight forward except I guess for the fuel pump. Will the original pump cause me problems, and if so what can I do about this...

 

As fuel goes it pumps ok...

 

... I think the fuel tank level wires need to be switched.  something in my brain says they flipped them along the line and so an early sender with a later gauge (or vice versa) would give you a backwards gauge.

 

Really interested in what you find with this. I want to say that the '96 XJ fuel sender is a different animal from the '95 and down.

 

Have a look at THIS BUILD. Pretty much the same story as you... '87 MJ + '96 XJ.

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Ok , started stripping the cherokee, everything pretty doable this far. Started thinking on what I should do about the lift. Issue is that I really don't have the xtra cash to put a lift that I would like at this time so I was going to leave it at at stock height while I drive it as my dd. but if I don't do soa in the rear now it means I will have to pay again in the future for another cut and balanced drive shaft. Hmm, what to do.

I have photos I would like to share of the progress but have not figured out how to load them via iphone. As soon as I can do so I will start a build thread in projects for those interested.

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A few questions though.....

1) Can I keep the same steering column?

You can (and IMHO should) keep the original steering column. Chrysler switched from a GM Saginaw column to their own in 1995. The Chrysler column and steering wheel have a driver's side air bag. If you want the air bag -- switch. If you don't feel the need for an air bag, there's no reason to change the steering column.

 

2) Will the gauge cluster from a 96 Cherokee fit into a 87 comanche (the dash is inch better shape).

Yes. It will fit. But the '96 Cherokee cluster is all electronic, including the speedo. The MJ cluster for '87 used a mechanical speedometer.

 

3) I have heard somewhere a little rhetoric about the cherokee haveing airbags and the comanche not, will this affect me, if so how to work around?

Cherokees did not have air bags until 1995. Comanches never did. The "work around" is to not change the steering column. Unless you want the air bag, there's no reason to change.

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