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Old 07-07-2018, 10:38 AM
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Father Son Build - Daily Driver?

It is a bit of a long story. My number 2 daughter bought a 1992 YJ as here first car and decided she does not like it. I decided to trade a 2006 Subaru Forrester to her for it. Now I have a 1992 YJ as my daily driver.

I want to keep the car as my daily driver and a father son build with my number 3 child (almost 13 year old boy)

I have an issue though. Last week the 2.5L spun a bearing, I think. It had a catastrophic loss of power with a serious rattling. Now it won't start but it will turn over. I have not spent much time diagnosing the issue.

My question is this. If the 2.5L needs a rebuild what is the best option for getting the YJ back on the road? I have done a frame off restoration on a 1967 Corvair. I have a shop and every tool one could need, including a MIG welder.

I also have a 1998 Ford Explorer with a 4.0L V6 that could be a donor engine. Should I swap with a 4.0L Jeep engine, use the Ford V6 I have, hunt for a donor V8? I can garage the Jeep and let this be a long term build with my son, so I have time but would like to keep the budget reasonable. The boy has to match all of the money spent into a mutual fund, so we are not rolling in money.

What are your thoughts on ease, practicality, ROI, etc.

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Old 07-12-2018, 12:16 PM   #2
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Quote:
Originally Posted by StephenCBrinson View Post
It is a bit of a long story. My number 2 daughter bought a 1992 YJ as here first car and decided she does not like it. I decided to trade a 2006 Subaru Forrester to her for it. Now I have a 1992 YJ as my daily driver.

I want to keep the car as my daily driver and a father son build with my number 3 child (almost 13 year old boy)

I have an issue though. Last week the 2.5L spun a bearing, I think. It had a catastrophic loss of power with a serious rattling. Now it won't start but it will turn over. I have not spent much time diagnosing the issue.

My question is this. If the 2.5L needs a rebuild what is the best option for getting the YJ back on the road? I have done a frame off restoration on a 1967 Corvair. I have a shop and every tool one could need, including a MIG welder.

I also have a 1998 Ford Explorer with a 4.0L V6 that could be a donor engine. Should I swap with a 4.0L Jeep engine, use the Ford V6 I have, hunt for a donor V8? I can garage the Jeep and let this be a long term build with my son, so I have time but would like to keep the budget reasonable. The boy has to match all of the money spent into a mutual fund, so we are not rolling in money.

What are your thoughts on ease, practicality, ROI, etc.
Before you toss your old 2.5l in the trash double check nothing went astray with the timing chain. Loss of power and rattling are two very indicative symptoms of a timing chain thatís gone bad. Throw a stethoscope on the timing chain cover and listen to see if it comes from there. If not, then yes your motor is toast.

I would say stray away from the V6 from the Ford, thatís way too much work. Go ahead and sell the explorer with the engine and use that to buy yourself a 4.0 Jeep motor and AX-15. Iím sure you can sell your AX-5 from the Jeep for a little extra cash too. My recommendation would be to buy a used Cherokee with the 4.0 so you have the wiring harness and everything youíll need. Then sell the Cherokee off when youíre done for more cash!

Thatís the route I would go, and I think itíd be a relatively inexpensive way to get a 4.0.

Keep us posted, I love father and son projects.

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Old 07-13-2018, 09:12 AM
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Thanks for the replies. I'm leaning towards the jeep 4.0. Even though a 4BT would be off the charts, but don't have the cash for that.

What are thoughts on, buying a used engine and trans over finding a donor car/Cherokee. If I go donor Cherokee should I hold out for a 4x4 for the transfer case? Should i stock with the same model year range?
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Old 07-18-2018, 06:28 PM   #4
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A donor vehicle really helps because then you get all of the related parts like ECM, wiring harness, etc. that help make the swap easier.

None of the swaps are easy so be sure you know what you are getting into before you decide. Novak has a lot of technical information about various engines, transmissions, etc. on their website. https://www.novak-adapt.com/knowledge/
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Old 07-19-2018, 11:29 AM   #5
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Agreed. A swap is a swap. Although a 4.0 swap seems like it should just drop in there, there is a lot of stuff that needs to be changed. There is tons of info on here about swaps of all kinds. Read as many threads as you can. If it were me, and it has been, I would just go straight for the V8 swap. It is hard to beat an LS swap. They are readily available, done by everyone so the information is out there, and pretty inexpensive if you plan it right. Even the little 4.8 is great in a Jeep.
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Old 07-20-2018, 08:14 AM
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Thank you all for the input. I have much to think about as we build this jeep together. I am currently working to just get the thing running again. Which is turning out to be a bigger challenge then hoped. Ill update this build as things progress.
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Old 07-23-2018, 06:27 PM   #7
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Did the original diagnosis of a spun bearing in the 2.5 prove out or is it more than that?
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Old 07-23-2018, 07:43 PM
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Still working on the 2.5L. It is not a spun bearing. I have replaced the timing chain but do not have it running yet. I have a thread, about this repair. Ill update when I have an solution.
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Old 07-24-2018, 08:01 PM
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The 2.5 is running again!!!!
Ended up being the distributor was misaligned. Likely a combination of timing chain and distributor. you can read the saga on the thread "HELP! 92 2.5L Cranks but won't start"
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Old 07-25-2018, 09:00 AM
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Now that the jeep is running again. We can start on the build. Since this will be my daily driver for the next two years or so I need to do some maintenance. Up next is suspension. I would like to work out some of the radical bounce and oversteer when going over bumps. I do not expect to get it all out but changing lanes when hitting a bridge transition is a bit much.

What would you all suggest as a basic suspension upgrade to give better daily performance and a slight off road improvement. Not looking to rock crawl yet, that will come when we do the full restoration.
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Old 07-25-2018, 06:16 PM   #11
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Glad to hear you got the 2.5 running.

If you are getting a lot of bounce steer your shocks may be toast but also need to check the steering linkage including the column bearing in the engine compartment.

A compromise suspension upgrade would involve a 2" lift that would require new springs and shocks. You probably get a lot more than 2" of actual lift because the original springs are probably pretty flat by now. Many have been able to install the 2" lift without needing to deal with the drive shaft angle issue but if you end up with a vibration issue a transfer case drop is a cost effective short term solution for many.
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Old 08-23-2018, 07:22 AM
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The YJ build is off to a start.
We have all the parts together for a suspension and steering upgrade. Starting this afternoon we will be installing a Rubicon Express 2.5in lift kit, 1" shackles, ball joints, tie rods and drag links, and removing the track bars.

I was sold on a BDS lift until I discovered the local 4 Wheel Parts store. RE has the same warranty and I have a local source of I have problems. Plus I saved several hundred dollars for all the parts.

I am excited to see how this goes, as the son (12 year old) will be doing the work since he bought the parts.

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Old 08-23-2018, 11:23 AM   #13
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Awesome... put that boy to work.
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Old 08-23-2018, 11:42 AM
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He did the timing chain replacement a few weeks ago.

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Old 08-23-2018, 12:49 PM
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As I prep for todays Lift Kit install. I have printed all the instructions, torque specs, etc. I figured I would update the thread with the parts the Boy will be installing on Tim. Tim is what was decided for the name of the YJ.

Rubicon Express 2.5in Lift kit. RE5505
1" Greasable Shackles, Greasable Bushings
Tie Rod and Drag link and Ball Joints
Sway Bar bushings
We will be removing the front and rear track bar with this install.

Following are pictures of the parts.
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Old 08-23-2018, 12:52 PM
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More Parts
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Old 08-23-2018, 12:54 PM
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More Parts
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Old 08-23-2018, 12:57 PM
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More Parts. This project is a lot of parts.
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Old 08-28-2018, 04:41 PM
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Got the RE lift mostly stalled. Still need to install front brake line extensions, sway bar disconnect tabs on the axle tube, and the tcase drop.

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Old 08-28-2018, 06:02 PM
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I have a few new projects as a result of this lift install. I have to add new upper rear shock mounts, a section of frame, and replace the tcase skid plate and some of the frame at the skid plate.

I have question about the skid plate. There are supposed to be 6 bolts but mine has two pins. Any ideas?

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Old 08-28-2018, 06:03 PM
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I forgot to add the photos

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Old 08-28-2018, 06:17 PM   #22
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The skid plate is suppose to bolt to nuts welded into the frame. It appears that someone had problems with those and rigged something else. Does anything come through to the top of the frame? Does it look like someone welded the frame in the area of the pins?
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Old 08-28-2018, 06:21 PM
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I don't see any weld evidence. But lots of rust. There is some kind of foam in the frame around these pins.

I agree it PO rigged something.

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Old 08-28-2018, 06:37 PM
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Nothing comes through the top

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Old 08-29-2018, 12:02 PM   #25
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That sure looks odd. Someone did something that isn't quite right. That certainly includes putting spray foam inside the frame. That stuff holds moisture and promotes more rust. scrape that crap out of there. Brake cleaner should dissolve it too.
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Old 08-29-2018, 06:29 PM   #26
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How can you see foam inside the frame (it should be a full box)?
I know it sounds drastic but I would say cut the heads off so that you can get the skid plate off and get a better view of what the heck was done to the frame. They sell a replacement frame section that includes the welded in nuts if I recall correctly.
You will need to repair/replace the skid plate as it appears the holes that the bolts are suppose to go through are rusted oversize.
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Old 08-31-2018, 01:49 PM   #27
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Fantastic! This is an awesome project to do with your son. You are both very lucky!
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Old 08-31-2018, 03:08 PM
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I got the sway bar disconnect mount tabs welded on and the disconnects installed.

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