motor for future

[dirty88comanche]

i had a friend of the family (30 year mechanic) check out my comanche and my motors pretty beat he said. it can make it threw the next year plus but just as a driver, so i can't go having too much fun in it.

 

my question is whats a good motor to try and replace it with. I'm looking for something to have as a daily driver but to be able to have some fun in the woods too. my only problem is i have to wait till after i ship for bootcamp cause I'm short on funds.

[87manche]

what motor and trans do you have now?

[fiscus]

Assuming you have an 88 4.0L 4x4, I would say a 91+ HO 4.0L with low miles.

While you're upgrading, you might as well swap in a newer AW4 (or AX15 if you have the peugot currently).

[Pete M]

I realize that it's totally possible, but I hesitate taking anyone's word that a Jeep motor is on its way out. I don't mean to imply that all mechanics are trying to screw over Jeep owners, but our engines just seem to show "signs" of dying when in fact they aren't. What makes him think yours is failing? Noises? compression? Leaks oil? :hmm:

[DirtyComanche]

Both the 4.0 and 2.5 don't really die. Well, eventually they will. But they'll smoke, leak, run weird, not have any compression, etc, but still be perfectly driveable and continue to even make alright power.

 

 

It's when you start seeing metal in the oil that you know it's getting near the end.

 

 

 

 

Anyways, I'd just build a 4.0 to match whatever was in it. If it had a renix, build a renix. If it had a HO - build that. If it had a 2.5 accept that you are eternally damned from making any power and either build a 4.0 (plus a drivetran) or build a 2.5.

[feerocknok]

Four wheel drive? If 4x2, rotary power... brap, brap, brap!

[87manche]

if it was a 4.0 I'd consider a stroker.

minimally more expensive than a good rebuild, and you can make anice 4.5L unit that will run on 87 octane and still make nice power.

look here for basic blueprints about what you need.

http://www.angelfire.com/my/fan/

[comancheman]

if u decide u want to keep it original and u have a 4.0 ive got an 88 4.0 w/ 80k that id be willing to sell. doesnt matter when, as its still in the truck. ive got a whole drivetrain if u want it.

[comancheman]

make sure that yours actually has issues though. the 4.0 is a beast

[carnuck]

If the power has dropped, your cat may have imploded and puked it's innards into the muffler, making a darn good clog to power and exhaust output. I gutted mine after I dropped to only being able to drive 55 mph and that cured it!

Run Chevron Delo 15W40 (and stock up on the regular non-low sulphur stuff if it's still available in your area)