View Full Version : 85 CJ7 teardown

08-29-2015, 10:25 PM
I posted a few pics on Facebook, but figured I should eventually start a thread here.

I bought the CJ about two years ago, had the Carter carburetor tuned, did the standard maintenance, wheeled a few times and dropped the AMC20 for a Dana 44 from an Isuzu. I had the 4.10 gears put in with the new rearend. The PO decided to put 33's on without changing the gears or the speedo.

I never was very happy with the AMC 4.2/carter combo. I still had some engine ticking, oil seeping everywhere, and two stuck lifters. I was originally going to rebuild the 4.2 from scratch, but decided to bite the bullet and just tear it all down to the frame and toss in a rebuilt Ford engine.

The plan is sandblast and primer frame and axles, then source a 5.0HO ford injected engine, T-18 transmission and stick with the D300 if possible. No one seems to be interested in 4.2 engines with a t176 and a carter... I wonder why.

Pics in next post

08-29-2015, 10:27 PM
After wheeling a few times:

Dana 44 rear end:

Locked & Loaded
08-30-2015, 08:19 AM

08-30-2015, 08:47 AM
Clean looking Jeep

08-30-2015, 10:05 AM
Clean looking Jeep

It may look like that, but I'm not sure how much of the body is going to be salvageable. Rusted through in multiple spots. Once i fully strip the body, i'll reassess. The PO(s) had a good time with way too much bondo... 1/4-1/3" thick on the hood of all places...

08-30-2015, 12:44 PM
so why don't you put in a amc v8 instead, your trans, motor mounts, and accessories will bolt up. if you want fuel injection put tbi or one of the newer injection setups in. if you need parts or help let me know.

08-30-2015, 11:29 PM
so why don't you put in a amc v8 instead, your trans, motor mounts, and accessories will bolt up. if you want fuel injection put tbi or one of the newer injection setups in. if you need parts or help let me know.X2… Since they came with a AMC V8 option, this is about as easy-peazy a swap as there is. ;) That's what I did many long moons ago. ;)

08-31-2015, 09:00 AM
A off road modified MC2150 carb is $300 from the ebay guy.

01-03-2017, 08:14 PM
Well, a lot has happened in the last year... I finished the teardown, body isn't worth anything, so many rush bolts and halfway fixes.

This is the state of things now:
Rolling chassis with new rough country 4" lift and shocks, chassis was blasted and painted with frame paint, Eastwood internal frame paint on the inside since blasters did a crazy good job getting it all cleaned out. New bolts here and there, repainted gas tank, new brake lines and extensions, painted axles and new crown tie rod/drag link, and rough country steering stabilizer.

Ended up buying a cherokee 1991 ho 4.0 engine, boring .030 over, resurfacing head and block, something with the big end being too big, turn and balance crank, all new rebuild kit. Hopefully it's back this week so I can start the rebuild myself with a mechanic friend's help.

Going to drop in a new body, either from a cj or yj.

In need of the following, but cash is tight:
4.0 vapor canister and all emissions lines
Steering wheel since mine is shot
YJ 4.0 dash, engine, and rear harness, 4.0 compatible senders and gauges since my CJ ones will probably be wrong, any guidance here?
Re-welded/upholstered bucket seats because I want to keep my stock buckets, but one broke and lays back on its own now.

Full cage tied into frame will come later.

What else should I add to that list?

01-03-2017, 08:20 PM
Here's a bit of the rebuild...


01-03-2017, 08:24 PM
And a few of the teardown...

01-03-2017, 09:46 PM
It is great to see this thread get updated. :cool:

01-13-2017, 03:46 PM
I had basko engine do the work. 30 over, balance crank, rebuild kit, valve job, etc... looks amazing from what I took them.






01-26-2017, 06:37 AM



01-26-2017, 09:57 AM
looks good, did you scrub the block after you got it back from the rebuilder before you start your build? should be a good all around power plant for you. best if you get all the parts from a yj with the 4.0 and use in yours, shoot you might as well get the tub also.

01-26-2017, 11:37 AM
Yeah, I washed it down per instructions from my mechanic.

The only things im missing from the powerplant are sensors, an AC bypass plate, and the idler assembly. Gonna junkyard those last two bits. Leaning toward Dakota Digital, so im holding off on sending units for now.

Im also leaning toward the hesco kit as well.

Im not decided on CJ7 body vs YJ body yet, but i may go YJ body, which means my thread is now in the wrong subforum...

03-24-2017, 07:54 PM
lots of things going on with this build. I keep forgetting to come in here and post.

I found a 1990 YJ body in Tucson and towed it up here. got it completely stripped and lined the bottom with 3M underbody coating after scraping off the old oily, dusty, crap. I also cut a new hole for the gas filler on the right side. I'll get the left filled at some point before I do the Monstaliner OD Green kit inside and out.

New parts have been showing up left and right, my credit cards hate me right now.

Hoping to wrangle a few bodies from the neighborhood tomorrow morning to put the body on and start getting it ready for new exhaust and emissions.

04-06-2017, 10:55 PM
rebuild status: picture heavy

engine rebuild
71302713037130471305713067130771308713097131071311 71312713137131471315713167131771318713197132071321

used engine teardown - 1991 cherokee engine
71322713237132471325713267132771328713297133071331 713327133371334713357133671337

Engine rebuild - bored 30 over, head decked, block decked, crank balanced and ground
71338713397134071341713427134371344713457134671347 71302713037130471305713067130771308713097131071311 71348713127131371314713157131671317713187131971320 71321

Engine installed
71349713507135171352713537135471355713567135771358 71359713607136171362713637136471365713667136771368 7136971370713717137271373713747137571376

1990 YJ body from Tucson

Tub teardown

Underbody coating removed - 3M added

Power Brake Upgrade

Gas moved to passenger side

fender/grill fitment

New Corbeau Moab Tan seats installed

04-06-2017, 10:57 PM
waiting on my steering column, then timing the distributor properly and finally exhaust, emissions, and registration.

waiting until fall to do the Monstaliner. Hopefully they have an Anvil Grey tint by then!

04-08-2017, 01:47 AM
I can't thank you enough for this thread, and the tons of pics you're posting! I'm studying every pic closely, and each one takes me back to the time my step dad and I restored a 1975 CJ5 about 10 years ago. So much fun to see those components torn apart, and put back together again. Please keep this thread going!

04-09-2017, 02:22 PM
AZHoosier - Glad you like all the pictures. I have a boatload from documenting the teardown, but none are annotated, so they probably wouldn't be of much help at this point. I've replaced so many parts with new, bought more bolts and nuts than any one person should ever have to buy, and still have to buy a few more to finish it off. Looks like my oil and fuel gauges might be shot, but everything else seems to be working for the second that it fires up before dying again. I think the timing is still off by a hair.

As far as conversions go, I had to clean up a LOT more of the jeep to get it ready, but it's been worth it so far.

04-09-2017, 02:47 PM
Great build!
Thanks for taking the time to post all the pics!!

04-09-2017, 06:31 PM
For future reference, blue is hot on start only, I hooked the starter to that wire. Red w/ white tracer is hot on start and run, I hooked engine harness, fan relay, and alternator to that even though the Hesco doc said I needed to hook everything to the blue wire.

04-09-2017, 06:32 PM
and my red/trace is 12v all the time, not 6v like someone posted on FB... this going to screw things up?