I used information from your site to repair my 1993 Mighty Max (also sold as the Dodge D50) 5-speed manual, 4WD truck. The truck had 185k miles and showed smoke so it wouldnÆt pass the Colorado emissions test. I pulled a 3.0L from a 1989 Plymouth van with 105K, missing the water pump and front plastic covers. Even though it was a cross-fit engine it looked the same. The oil filter was in the wrong place so I found that the left motor mount of the Mits engine would cover the filter attachment boss on the Chrysler and used the original Mits oil pump. Using a handmade gasket between the mount steel and the block, oil flows correctly and there are no leaks. The bolt holes for the Mitsu mount align with the Chrysler filter attachment boss holes, but you have to trim the motor mount some to get the dipstick to fit. Interestingly, the flywheel fits the Chrysler version and the transmission input shaft carry bearing (idler bearing) is integral with the flywheel so no problem existed there.

At first I used the cast cam sprockets from the Mitsu but found that somehow the Mitsu sprockets are not centered on the Chrysler cams. The cam drive belt would alternate between too tight and too loose and made a repetitious noise like one or more of the lifters was faulty. I finally found the problem after using a stethoscope and noting that the noise was accompanied by a movement in the heater supply hose! I changed to the stamped Chrysler cam sprockets and eliminated the problem. It was difficult to comprehend how the timing belt survived this torture but it seems to be fine.

I used the Mitsu injectors and plenum, distributor, starter and motor mounts. The oil dipstick ended up being on the driver side instead of as in the Mitsu on the passenger side.

The truck seems to have a little more power, gets a little better fuel economy and passes emissions. I can easily accelerate from 30 mph in 5th , the truck will go over 100 mph (if you are brave enough to keep it up) and get about 27 mpg in mixed, but mostly highway driving.

Salvage yards wanted over $900 for a rear-drive engine from a Montero and I got the Chrysler engine for less than $100.