I just found out today that my 4.0 needs to be replaced or rebuilt. I'm just not sure which route would be more cost efficient or the best way to take. It's only got 187k, so I'm pretty disappointed, but I bought it used with 182K and who knows how that guy treated it. Still with a 3" lift, safari basket, 31s and pretty clean for $1700, I can really complain. All suggestions will be considered. Thanks guys and gals.

 

Jasper engines are probably the best. They run $3200-3800 or so plus pulling and putting. They can have up to a 3 year warranty depending on what options you choose.

 

JY motor for less than a grand...

 

And it may not be any better than what he's pulling out.

 

All the ones I've done for plenty of vehicles come with a warranty.

 

I am in the process of rebuilding mine myself. Same mileage as your, had a rod knocking. I found a block and crank on Craigslist for $150, had the machine work done, bought a rebuild kit online for $535, including new hypereutectic pistons, cam, timing set, lifters, gaskets, oil pump.....etc etc....all in all I will end up spending less than 2K, and the good thing is, I know whats in the engine, and that it is assembled properly. Being a 1992, its been pretty labor intensive cleaning everything up, but it should be really clean and reliable when done.

 

Does that include free labor to do it over?

 

We don't know whether the original poster can do any or all of the work himself.

 

Go ahead. Spend 3+ times the amount.

I've never had to pull a motor after install, and like I said, I've done several.

And if the OP can't do any or all of the work himself, what does it matter? You'll still be way ahead if you have to pay labor twice, rather than shelling out 3k+ for what you suggest. Even then, the shop, if they are a decent shop, wont charge labor twice.

That's insane.

 

wish you were closer i put a long block in a 94 2wd for my sister n law just got the jeep back this weekend would sell the whole thing i paid $1200 for the long block from a local engine shop. she hardly drove it i put more miles on my mud truck a year than she did taking the kids back n forth did the r&r my self dont think i could get much more than that for the whole jeep

 

True that....was just giving my $.02 worth for information to the poster as to what it MIGHT cost if he COULD do the work himself.

 

If a person was to bring their Jeep in along with a junkyard engine that they are providing--and that engine was bad after you charged them to put it in--are you saying that they could then bring engine after engine to you, and you would put them all in for free? Until you found a good one?

Wow.

 

if my motor ever blows im gonna do the 4.7 stroker kit

 

It wouldnt be long before that "decent shop" went out of business. You paid for the labor.. not a guarantee that the engine will run properly.

Take a look at engine rebuilders, most decent rebuilders will cover the labor to shop if a warranty were needed. I have personal experience with Jasper on this when my oilpump failed at 2 years and 25K miles into a 3/50K warranty.

 

Who said I would be providing the motor? Your putting words in my mouth to make your suggestion sound better. If a shop gets you a JY motor and installs, its not going to be your responsibility.
If that 'decent shop' supplied the engine from.the junk yard, its their responsibility.

And we are now going quite far into the relm of what ifs and hypotheticals.

Go ahead, spend 3000$ plus on a remanned motor.

But you can't tell me its more economical than spending less than a grand on a warranteed JY motor.