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1987 XJ 4.0 AW4 My mileage just dropped to 10 MPG and I traced the problem to a failed FPR. I checked my usual online OEM parts sources and found the regulator priced at $160. I called the local dealer and they said they could get it for $95.20, but the supply was very limited and that there...

I want to install tinted glass in the rear doors and the rear quarters. I started with the rear doors but can't seem to get the old glass out. I have the FSM and have found all the hardware referenced in the FSM, except a rivet, which I can't find. I searched here and found one reference to a...

I have been in Moab since Sunday and haven't seen anyone else from NAC. I thought Johnny and the misses would be here for their anniversary. I really hope someone else is here to act as a judge at the car show tomorrow evening. At least one judge from each chapter is expected. Surely someone...

I have been running an '87 XJ Dana 44 rear axle for several years now. I am tired of bumping the lower shock mounts on rocks and want to raise them. I realize I will need to buy shorter shocks. Can somebody recommend a source for ready to weld on, raised lower shock mounts?

The inner steel door panel in my 1987 XJ is torn http://www.naxja.org/forum/showthread.php?t=1072835&highlight=doorand I am looking at replacing the entire door before I spend any more time on this one. This is back when AMC was in charge of the paint codes and the aftermarket paint suppliers...

2000 XJ 4.0L AW4 bone stock. I am the second owner since 2004. I currently also drive a 1987 XJ and have previously driven 1990, 1994 and 1996 4.0 XJs with the AW4. This 2000 XJ has always taken more effort to steer than any of the previous ones mentioned. After I bought the car, I read...

While disassembling my 4.0, I found the plastic timing chain tesion shoe that clips to the side of the timing gover has the tab broken off one end. I want to replace it. I thought it would possibly come with the new timing set, but it is not shown in the pictures and is not in the description of...

I would appreciate knowing what pistons people have used to rebuild their stock (non-stroker) engines. I chose the OEM Tech forum, since the only possible modification I will do is aftermarket pistons. If the moderator thinks this belongs someplace else, go ahead and move it. I have a bone...

I know several people on here have had to deal with a cracked 0331 head. I have one now. I don't want to loose the small exhaust ports and other things that give this head the low RPM torque. I called Clearwater Cylinder Head, wanting to know how closely their head specifications compare to the...

2000 XJ 4.0, AW4, NV242 I just took a road trip to visit a friend 900 miles away. After leavine his place, I stopped for gas. When I restarted the engine, I had a Check Gauges light and the voltmeter read zero volts. The engine was running fine, so I figured it was eroneous and I drove on. I...

1987 XJ, 4 door, Electric doors & windows Six months ago I took my driver's door open to investigate a banging noise when I closed the door. I discovered a crack in the inner sheet metal near the window motor, alowing the motor to swing when the door is opened and closed. I found a 1/16" thick...

I am looking for a good good, straight HP D30 housing to replace one with a bent axle tube. Anybody got one for sale? I am near Rochester, NY.

1990 XJ Laredo - I am replacing the headliner and need to replace the fabric on the sunvisors while I am at it. I can't figure out how to release the vanity mirror from the right side sunvisor. It looks as though there is a clip at each end (behind the bulbs) that each go through a hole in the...

2000 XJ, 4.0L, 120,000 miles Everything stock... I'm a little rusty at diagnosing piston slap. Not to date myself, but the only engine where I have heard it was the 292 cuin 6 in my 1955 Chevy Sedan Delivery... Gee I wish I still had that truck. I have been chasing this noise for a couple of...

I am building a budget stroker on a RENIX block. I would like to use a stock HO camshaft. Surely someone has built a high RPM street stroker and replaced their stock cam with a bigger one. Please let me know if you have an HO OEM cam available. TIA MoFo

I am building a budget stroker on a RENIX block. I would like to use an HO camshaft for the low RPM torque potential. Possibly somebody has built a high RPM stroker and replaced their stock cam. Please let me know if you have an OEM cam available. TIA MoFo

I am selecting a cam for my 4.5 L budget stroker. My goal is low RPM torque and optimum fuel economy with 87 octane pump gas. This engine will probably never run over 4K RPM. The only head work I am planning is to smooth and CC match the chambers and port match. I would like to use the cam from...

Does anybody know where I can get a copy of the book P5007161, Mopar Jeep Engines 3rd Edition Performance Modifications? I have searched all the popular places online and came up empty. I have read some bits about a PDF version available, but that has not panned out either. Any ideas where I...

I am planning a budget stroker and need help with parts decisions. I have 2 running RENIX 4.0 engines and a 99 4.0 with a spun rod bearing. This stroker will be replacing a 4.0 in a 1987 XJ. I am planning to use a RENIX block because: No ECU or harness changes required Knock sensor Stronger...

1987 XJ 4.0 When my gas tank is completely full, the gauge is on the full mark, never above, like I have seen in my other XJs. When the gauge reads 1/8 of a tank, the low fuel warning light comes on as expected. I can easily drive 75 miles with the light on. If I fill it up when the light comes...