Join Date: Sep 1999
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Re: Anyone seen Mopar port fuel injection kit
I came acroos a 91 Xj 4.0 motor for a good deal and put it in my wife's 83 -7. Don't try to use the factory harness as I did, it was such a headache, I found out about HESCO (the company that makes the mopar kit from what I can tell), and they sold me the individual parts from the kit that I needed to make the install. Going with an XJ motor required a few additional things, for instance, the engine driven fan is offset and i had to replace the water pump with a YJ one to mount a fan to it. HESCO had a harmonic damper that replaces the stock one and allows you to mount the tdc sensor on the front (just like the mpfi kits for the 4.2) so no bellhousing mods were needed. Used the same belhousing, and the motor mounts off the 4.2 bolt to the 4.0 with tapping of only one hole. I could go on and on, just write if you want more info. Yes there were some headaches, but nothing a little common sense couldn't fix. It made a huge difference in driveability. The 4.2/carb ran surprisingly well, never really gave me any problems, but the FI is nearly impossible to stall. The first test run I put it in low,low and went up a steep hill and pushed on the brake and it still kept climbing, pushed harder till it started to stumble, let off and it smoothed right out and kept climbing. Also made a big difference on the highway, revs better with more power in the top end. This is with 3.31 gears and 32" tires. Will eventually go to 4.10's, can't imagine how much better it will do on the interstate. All in all an awesome deal, and money wise would not have been to bad if not for some mistakes I made (Custom Jeep out of Texas was supposed to make me a harness out of the original cj and xj harness, as well as some bellhousing mods, $800 late it didn't work and they never made good on it, live and learn I guess, if they are still in business AVOID LIKE THE PLAGUE) It is especially nice since it is my wife's Jeep, the easy starts no matter how cold, smooth running, makes it easy for her to live with it.
89 XJ-stock, 83 CJ-7/4.0HO-t18-d300-locked-2.5" rancho-32 bfg mt, 79 Blazer/454-t400-np205-locked-4w disc-35 bfg mt, 67 CJ-5/231-t18-d18-4.88-front disc-rear 11" drum/front locked/30-9.50's