Hi everyone. New to the site. Lots to learn about my new project, a Jeep CJ5, soon to be with an 1.8L 4FB1 Isuzu Diesel. My build is a first to me in almost all ways. This is my first 4x4, first Jeep, and is the first diesel motor I have ever owned personally. View attachment 34876 View attachment 34877 The 1.8L 4FB1 I found on CL, out of a Chevette, with @ 55,000 original miles. Auto trans was left behind, as of no interest to me whatsoever. Got it cheaper, too. I have been meditating on the concept for a year, so when I saw the 1.8L, I did some fast research, and I jumped. Parts seem to be a slight concern, but they are out there. But the tiny size and proven reliability should more than compensate. Actually just spoke with a guy who has plenty of spare motors just a few hours away. And for those out of the loop, these weigh @ 368lbs FULLY DRESSED, and have ALL the features of a high end boosted diesel. Piston squirters, beefy rods and crank, ect... Here's a crazy thing: I bought this motor UBER cheap on CL, before I did any research on Jeep transmissions. Or before I had the Jeep. Now, there is an UBER rare Isuzu Rodeo 2.6L I4 2WD 5 spd bell housing that mates MY engine(@ '82 vintage Isuzu Chevette sourced), with a Jeep T5. As in the SAME bolt pattern as the Jeep T5. Haven't looked too deeply into input shaft dia., or clutch components yet. But still, WHAT are the odds of THAT? A VERY kind soul met at an Isuzu forum found one in an AZ pick-your-part, pulled it, mailed it, no money up front. Goals of the project are: 1) Mechanical injection exclusively. NO electronics on running motor. I don't care if it hurts economy slightly. 2) Cheap Fuel The ability to dump nearly any kind of waste/junk oil into the tank. Constructive input welcome here, but I have personally seen everything from used soybean oil, used motor oil, to old auto trans fluid used in various diesels (including common rail). No strange additives, mixing, ect. Works great, cheap, and easy. I have seen mid 90's Ford common rails burning just about anything. My personal thoughts are if the "junk"(filtered to 1 micron) is cut with diesel #2, you would have no real concern. Diesel #2 has a much higher sulfur content, which is very slippery...And #2 is STREET LEGAL in a diesel older than mid or late 90's(correct me if I'm wrong for OH at least). Just read the placard on a diesel #1 pump the other day. It said RECOMMENDED for older than late 90's... 3) Power Perhaps @ double or triple factory HP, which is possible. 4) Reliability 5) Simplicity 6) Cost (as in, as little as possible), but with a huge nod towards safety and reliability. And after buying the CJ, and the motor, I am WELL under my goal of > $2,000 so far. And still have plenty $$$ for trans., transfer case, and tires(which I feel will be the pricier items). 7) Fuel economy I know a 4x4 brick is not efficient, but if I can bag 30-40 MPG on the highway, I'd be happy. And no I don't want huge knobby swamper/mudder tires. I noticed a Isuzu P'up at another site, that is running an Eaton M90 SC. Works very nice. Used Cummins 4BT boost timing components installed inside of the Isuzu "Altitude Compensator". View attachment 34875 It's of particular interest to me as the gentleman I bought my 1.8l diesel from threw a Ford M90 in, along with a inter-cooler(i believe from a Saab). It reminds me of a modern radiator, with plastic tanks on either side. Glad I have a Ford M90, as they are much more adaptable... However in the mean time I am tossing the idea @ of using it, as it is on hand, free and ready to roll(as far as the unit itself goes). Versus trying to buy/ship a turbo(or two) that probably wouldn't be quite right anyways. I noticed the T25's are too big really, and the T15's seem small. To use the turbine side of a T15, and compressor from T25, well, there's 2 used turbos I gotta buy, still have to have it balanced, rebuild the unit. Then fab pressure oil line, return... Prelim rough calculations if I were to use the M90 reveal @ 1 to .95 (appx) drive would yield @ 12- 15psi at 6,000 RPM's. The blower would live dang near forever. I know TECHNICALLY the M90 is way too big. But it's THERE and READY. I think personally for my project my goals are to get full boost at 5,000RPM(this motor's Red Line), and keep it conservative, as I won't go that high often(hopefully). I'd like to HAVE the power there, available, but actually use it as sparingly as possible(so I don't stand out like a lil ol' lady angering everyone else merging with traffic!) My biggest concern is parasitic losses @ cruise, and at redline. Tiny motor can't afford much HP to spare...But decent economy is also a factor, but then it WOULD be uber reliable, and 150 lbs torque is fine... And perhaps I could wire up a on/off switch to a A/C clutch, ala Mercedes Benz and/or Mad Max. All the project goals are slightly variable, to a point... AND, the buddy who lent me the trailer gave me: A set of military tailights(one is glass lens!!), a spare tire mount, a Gerry can from 1945( I already have one from '51). He also has a set of 4 NICE chrome 15x7(instead of the 8's that stick out 2+ inches) that he'll sell CHEAP!! Mounted a 235/75R 15 on it, and it's about right. Sticks out from under the tub BARELY. Worried about water "rooster tails" as I go down the road (or trail) with no flares... PO called and said he found a set of the military 16x4.5 wheels he'd trade for my crappy 15x8's! Think I'll widen them to @ 7-8", in the future(as $$$ allows). That will really help with the look I'm shooting for, AND help with tire selection, as 15's are slowly going away. STILL have to get back down there and pick up my roll bar and axles. MAN, I'm having a HARD time finding a CJ5/M38A1 short nose!!!