Were is a good place to get a replacement 4.0 liter crate motor or long block I think I am going to need on for my 92 it has some rocker arm nosie and has low oil pressure I just want it to last till I can save up enough for a new one. or would it be better to get it rebuilt once it craps??
Run some 10W-30 or 20W-50 in it to builid up some extra oil pressure until you are ready. Aside from Mopar (which offers a 3 year 36000 mile warranty) there are tons of places for a crate engine, you could always go to a salvage yard and go used if you can find a low mileage one.
Dodge/Chrysler/Jeep Technician 14 Years
ASE Master Certified
L1 Advanced Engine Performance
I've got one you can have for $50 lol. It ran when I pulled it from an XJ, only problem was it reved uncontrolably high from twisting on a broken motor mount. It has 190,000 and I don't know the history of it. I'm the 3rd owner. I'd say buy a junker and build a stroker. It isn't hard or expensive, you can do it for under $500 + engine. All you need is a 258 crank and connecting rods and your set. Or if you really want to be sure it's a good engine, get the 258 crank and rods, bore it out .030 and get some cheap pistons.
"Nitrous? So is that like viagra for your Jeep?" -mom
Well I could go pull a engine from the junkyard and build a stroker but I dont know if could rebuild it myself?? I dont really have the tools or expertece (spelling??). but a stroker for 500 + engine sounds pretty good! I think I could pull the motor and reinstall it it is just getting it rebuilt.
Jaspers can be expensive, but you get a good warranty behind it. At the shop I work at we are a Jasper installer and we actually do a lot. We have a Hummer H1 and a Motorhome right now that we are doing. I believe the warranties are like 3/yr 75,000 parts/labor.