Comanchemodder

Does it happen only when your low on fuel, say 1/4 tank or less? When you have a full tank, it runs fine?

Well, your like most guys. but we get forced into it.... :doh: :doh: :doh: :doh: :doh:

When I got married, we both kept our last names (no hypens). too much trouble changing paperwork, for what? change it back after you get divorced? We ended up staying married for 10 years and counting.

I had dealer installed a/c; the evaporator is smaller and the rockauto and jeepair.com cores are for factory air and won't fit in the airbox.. I ended up yanking a factory air box from the JY and swapping mine out. Now the factory evaporator cores fit. see my last update: http://comancheclub.com/topic/41895-direction-unknown-build-87-25l-2wd/

Trucks! episode 2010-17 used it on their project superdually: http://www.powerblocktv.com/episodes/TK2010-17/super-dually-part-5-sound-insulation-bedliner-installation

From the 1989 Jeep Cherokee service manual for the 4.0L in-line 6: Bore: 98.42-98.48mm Max Taper: .025mm Max out-of-round: .025mm

But the TJ is 2.5L is drop in. You just need to unbolt some stuff to get it as a long block form. If you want to keep your existing ECU and RENIX injector system, its an easy swap. If you want to use the TJ system, there are a few more things (my list).

You will need to choose if you retain the RENIX system or the TJ system. Differences: 1) ECU. If the engine comes with the full harness, this is do-able. 2) Distributor 3) Flywheel 4) accessory pullies my be offset slightly different (oil slinger?) 5) The Alternator. The TJ has an externally regulated. Your 86 has internal. 6) Fuel pump. The TJ requires the higher pressure. There may be some others. Basically you need to decide if you retain your RENIX or not. If yes, its a no brainer easy. I managed to do it, and if I can, anyone on this board can. If you want the MPI, there a couple of more things to take care of.

I'm trying to get my A/C up and running before the heat of Houston is in full power. I discovered my Jeep, although it has "A/C", it was a dealer installed A/C. There are a few differences I discovered when trying to install new evaporator. 1) The heater boxes are different. The dealer installed A/C uses a smaller heater box and smaller evaporator core as a result. A standard factory evaporator will not fit. I went to the JY and pulled a Cherokee heater box and installed it. It was a bolt in fit. The factory A/C heater box has a "bulge" to allow the larger evaporator to fit. 2) The A/C controller needs to have some mods to the vacuum lines. The dealer A/C controller "crimps" two vacuum lines coming from the controller. These two lines are responsible for activating the heater control valve. To supply vacuum to the control valve when A/C is selected, I cut the crimps and connected the lines.I guess if you eliminated the heater control valve, you could leave it as is.

After this weekend of trying to get my hub and brakes installed, I can's recommend enough the advantages of local Auto. Advantages: 1) You can buy a bunch of different stuff and return the stuff that doesn't work. 2) If you miss something, drive back and get it. 3) price is not that bad; very comparable to on-line. Disadvantage: 1) May not get the brand selection as you would on-line. 2) High performance stuff is not readily available.

Here is a pic of the 2WD hub assembly for future reference: Side: Stub shaft:

I replaced the driver side spindle. It is tough to find spares for the standard '87 2WD spindle, which uses a car style spindle with replaceable wheel bearings. Apparently, in '92, Jeep changed the 2WD spindles to more of a 4WD style which uses a hub and stubshaft. I picked up one of these assemblies from the junkyard. Some notes: 1) hub/knuckle bolts into the inner C of the '87 beam axle without issue. 2) The new hub requires a different brakek caliper. Although the hole spacing is the same, the threads for the mounting screws are smaller. Used a '93 XJ caliper. 3) The brake pads are different. They are slightly longer since the bracket on the knuckle is slightly larger. I also replaced the master cylinder while I was into the brakes. I must say, the stopping power is significantly better! Previously, my brakes were marginally safe; with the brakes repaired, maybe I can drop that extra life insurance policy? 2WD Hub assembly profile: 2WD stub shaft installed into hub. You must have this shaft since it hold the bearing together and would result in a lost wheel without it! Hub installed. The bracket for the brakes is slightly wider spread, requiring the '93 pads to properly straddle the bracket.

I edited the post to clarify the assembly was from a 2WD.

Spindle replaced with '93+ XJ 2WD knuckle assembly (hub with stubshaft). The knuckle bolted right into the 2WD inner C. However, new equipment needed: 1) New brake rotor 2) New caliper (the mounting screw threads are different on the bracket) 3) New pads (to fit new caliper)

There is a lot of starter info here, including bolt sizes: http://comancheclub.com/topic/41367-christmas-eve-starter-problems-please-help/

place the axle level (the differential output shaft or spring perches are level) look at the inner C's. They should have a "backwards" rake to them (Jeeps have about 4-5 degrees I think). If they are straight up and down (zero caster), you may have some drivabilty issues. Nice truck BTW.

I was a the JY at lunch. I picked up the 2WD spindle. Turns out it was a stub-shaft knuckle assembly from the later years. I bought it and let you know how it installs this weekend.

I found a couple on car-part. I called and the JY owner said its "just the spindle" when asked if it was a knuckle assembly. Can a spindle be re-pressed into my knuckle? I have a monster arbor press to do it, but I guess I am not sure if a good fit can be maintained if a used spindle was removed from an old knuckle and then get pressed again. Yellaheep: PM sent

More work than I really wanted to do at the moment. Anyone know where to get a new spindle? The dealer?

I blew a front whel bearing and it destroyed the spindle. I can't seem to find where to buy one. I was thinking of going to the JY to get a 4wd front knuckle and use a fresh 4WD hub and brake rotor. Will this work?

If that is a Scout II axle, it has zero caster. Keep that in mind if you will be keeping this a streetable truck.

Drove home tonight to a freakish grinding-rattling noise. The wheel bearing blew out. The only way to describe the experience of driving on spindles is "god I hope I make it home..." Anyone know where to buy 2wd spindles? [/url]">http://

eBay. Thankfully I don't make a living from it. I tried to sell my wife's iPhone. Finally after 5 auctions ( Relist and buy it nows), I got paid for the item. It took over two months with open claims and all.

Thanks for posting this. I appreciate the assessment of suppliers (good and bad). The price of this lesson was not cheap but I hope it helps others.

Does the plastic housing which has the cores fit in all trucks? I'm going to the JY to get a new one and want to know what trucks are compatible before I yank a dash at the JY.