MJ20

Where does the rubber bumper go? That may be why my e-brake won’t stay in the down position and releases and slams all the way upward.

My mj has a pilot bushing from advance adapters to mate the transplanted ’97 TJ 4.0 motor to the ’89 AX15. So there must be a difference in cranks between the 4.0 renix and ho motors I guess. I don’t have specifics but the po said it took a couple days to get it from aa and they knew what was needed.

I bought this fixed yoke kit special for $199 shipped, got it in a couple days. It comes with a cv yoke and you need a cv style drive shaft and pinion pointed straight at it. http://www.pirate4x4.com/forum/showthread.php?t=613060

Well I can’t find where I read about pre ‘91’s having a 21 spline output, but according to novak they all should be 23 spline. Only 21 spline output I can find is with the ba-10. So maybe I can play around with a np208 coupled to an ax-15 afterall.

I’m a member there too, and aren’t all the 208’s mated to 727’s? It’s np208am, for american motors. I don’t think they ever had a np208j. Do you have any info about the spacer? It can mate a 208am to an ax-15 with 23 spline? I haven’t read anything about that and I have an extra case out of my J20 I could play around with but unfortunately my ax-15 would be a 21 spline in the mj. I’m curious that it would have the same np 6-hole round pattern that my 727 auto has though.

The service rep found the separation while the tire was on the jeep by feel. I had a mild case of death wobble so I new it had to be steering and not drive train. You may want to determine if it’s death wobble or a really bad vibration

I had the same problem a few months ago on my xj except the death wobble was between 35-55mph. Nothing was loose and I’ve got good ball joints and damper. I had an inner tire separation on a michilen a/t.

The waggy 44 will be too narrow for a j truck and the chero wide track is also 2” too narrow. You need a j truck pass drop, chevy or cucv axles for a 67 to 69” wms/wms. Then do an soa on any of the j truck axles. I did the soa using a dana 60 high pinion and a shackle flip for the rear 60 so no blocks at all. I’m glad I didn’t have to deal with the post mount as it reads like a pia. There’s an ongoing write up about wms/wms at ifsja. Look for tadsal and it’s in his sig (url below). Tadsal also fabs the soa conversion kit for j trucks and has a write up for the post mount as well as doing an soa on a post mount and doing a shackle flip (not reversal) on the post mount rear springs to match a front soa conversion Here’s a note from this url. http://members.cox.net/tadsal/WMS.html FSJ WT & JTruck Note: "The open knuckle WT and JTruck front Dana 44's share the same housing and axle shafts within their respective years (passenger drop and driver drop inner shafts do not interchange but the outer stub shaft will). The difference in WMS seems to be consistent with a difference in the hubs and where that places the WMS."

I bought the cruise stuff with a gauge cluster so I would have every connection the same. It cost $80. I wanted the full gauges anyways. Now I have decided to swap in a tilt column at the same time. I posted this pic of the parts I got and JeepcoMJ replied “for that cruise control you will need the lower cable as well...the one currently in it isn't gonna work” I’m not sure what that means yet as I haven’t done the swap yet. I am working on getting the truck to pass emissions before I do any more work on it. Plus I can’t find a tilt colum from an ’89 xj.

Nice truck. 5000gvwr. 120” wheelbase. Dana 20 tc. That’s all I remember. I am a member at ifsja.org and have a J20. There’s a ton of info about the gladiator. Some of the guys have a lot of info on the post mount springs and what to do if you need aftermarket springs or bushings. Get ready for some fab. That closed knuckle 44 will have to go if you want to wheel or need a decent turning radius. There’s a vigilante club and some other ifsja member websites with some good info, too.

It looks like a renix knock sensor is installed where the temp sensor would be on a ’97 ho motor. The temp sensor in the ho t-stat then controls the ecu since it has been spliced from up above to the connector down below for the ecu temp sensor according to the fsm. The third connector is the o2 sensor. Does anyone see a problem with that? Now I don’t know what I will do for the open cooling swap since I thought I would use an ho t-stat temp sensor instead of the rad sensor.

I have to agree it looks like it’s for cruise. There are no other cruise components inside or out and the turn/wiper control looks like original equipment.

Thanks for the pics. The vac lines pic look like mine except for the big black part on yours has large tubes extending out from the large orfice and mine has a broken one on one side and nothing on the other. Where do those lines go? I will look for that sensor down below in your pic tomorrow but that is where the extended lines are heading. I have the sensor in the rad and it is connected. It still has the closed system. The fsm shows the cad vac system with a breather that must be the blue line. I guess it doesn’t connect to anything. The actuator pic shows a ball chain with a round connector at the tag end of the cable coming out of the big black thing (actuator). It sure looks like it would connect to the throttle body linkage somehow. I have the stock renix linkage going to the stock throttle body. This is a sportruck basic model with no crusie control but that’s what it looks like or maybe it closes the throttle body when the engine is shut off. I don't know it's not hooked up. .

I have a ’97 motor and head with all the renix stuff in my mj. I began going through everything the mechanic did in the swap for the po and there’s some disconnected stuff and some other stuff I can’t find in the fsm and my xj doesn’t have it. Here's some pics. Along the fender next to the air filter is an actuator. What is it? The ’97 head doesn’t have the temp sensor so I have a disconnected sensor wire. So I don’t have an idiot light? The blue vac line doesn’t have anything to connect to. Below the other colored lines all go to a vac manifold. Is this a breather or vac? The ‘97 ho t-stat housing has a temp sensor and the connector was cut off and extended to a connector coming out of a wire loom underneath next to the motor. Is that the computer control? I pulled the two wires up for clarity.

http://phoenix.craigslist.org/car/404106430.html TODAY ONLY!! '88 Jeep Comanche, 4wd, PS/PB, AC. $1000 obo TODAY ONKLY 602-703-3048 Today onkly? This may be a good deal. It was $1500. http://phoenix.craigslist.org/car/395694155.html

That’s my problem, too. It runs great but failed co2 badly according to the po. I have the egr and everything looks good but something is wrong. Looks like a few new sensors were put in with the engine swap or after it failed emissions and it has a brand new cat that was put in after it failed emissions. It barely passed hydrocarbons according to the po. The engine swap was done a year before the po registered the truck with a city address and then needed emission testing so as far as I know it’s never passed emissions since the swap as it didn’t need to. Then it started running bad right before he sold it to me but it runs great to me. I can only get two more temp registrations for a year so I have to get this truck to pass first time I try. You can only get three a year and I got one to drive it home when I bought it. The vehicle plates stay with the owner in this county.

Hmm, I think you’re my new best buddy here, lol. I have all kinds of questions about this setup coming up. I’ll try the stock cold plugs for now.

I read that same thing about the rc12ecc while I was surfing around. I’m wondering why the ’89 mj uses a cold plug like the rc9yc and my ’91 xj doesn’t. The only real difference is renix, right? I actually plan on using bosch super equivalent at some point.

I’m trying to decide which spark plug to try in my ‘89 comanche. It has a ‘97 4.0 tj motor/head in it with the ’89 renix stuff, intake, exhaust, dist, etc. I bought the jeep with the motor already swapped in. It has bosch super r6 plugs in it. I could go 3 ways on this. What do you think? Use the recommended champion rc9yc or equivalent for an ’89 comanche 4.0. Use the recommended champion rc12ecc or equivalent for a ’97 tj 4.0. Use the recommended champion rc12lyc or equivalent I already use in my ’91 cherokee 4.0.

I think I was looking at that mj too, but found a ’89 4wd model here for $800 a couple months ago. I never went up to look at it. Good find. I got mine off craigslist tucson, was searching all the southwest links for a year. I saw your thread on a local board about it. I’ll come up to a m&g or something and check it out. Or if you get it wheeling I’ll be around in my J20 until I get mine going on the rocks.

Great pics. The front view pic of the CJ8 makes me reminisce my CJ5 I owned for 26 years. I bought it new in ’80 and sold it last july 7th. I’ve been really bummed out about selling it but almost one year has gone by and I sort of replaced it with the comanche I bought recently. The CJ5 didn’t have ac and the short wheelbase isn’t what I need these days for the wheeling that I do. It was the greatest thrill of my younger years and a daily driver for 17 years as well. I still wish I had it now. I see a pattern here. Old Family of Jeeps New Family of Jeeps

Well having been born and raised in tenn I’ve killed and ate every one of those many times. My mom use to cringe every time I brought home another snapping turtle for supper. But now after living in the southwest for so many years I think I’ve had my fill of those critters so if I want something different I just eat the rocky mtn oysters. Where at in Tenn? i was born/raised in Cookeville many years ago Bristol. I moved out west when I was 18. Spent most of my youth on boone creek and south holston river.

That does look a little weird kind of like a razor/boobie grille. That’s my J20 in the fsj grille type pics, pictured for the 80-85 muscle grille types. AMC actually used that grille in ’86, my truck is living proof. I converted to a rhino a couple years after that pic was put together.

Yep razor grille. I was thinking about how cool a razor grille would look, too. Sounds doable. A rhino would be just too big to size down and look right. A scaled down model would work though. Here's a pic of them all. http://frontier.net/~mystkblu/fsjgrillesrevisedflint.jpg

Well having been born and raised in tenn I’ve killed and ate every one of those many times. My mom use to cringe every time I brought home another snapping turtle for supper. But now after living in the southwest for so many years I think I’ve had my fill of those critters so if I want something different I just eat the rocky mtn oysters.