i am looking to get some advice on where to buy a new long block 4.0 engine for my XJ? any help would be great, current engine has a cracked block water getting into engine and it overheats...

Quadratech has them starting at $2200.00. quadratec.com I'm sure there are less expensive sources, maybe Jaspers Engines. A junkyard engine that has been freshened up a bit would be the least expensive route to take.

Where are you located?

Chesterfield Township Michigan

I'm thinking you're only gonna find a rebuilt, not new engine.

I think I'm going to buy a new engine from quadratec

Got a link to those "new" engines?

ATK Replacement 4.0L I-6 Engine
for 00-01 Jeep® Cherokee XJ

Quadratec Part: 51107 0017
Price: $2609.99

ATK engines with cylinder heads are engineered & fully remanufactured, using only the highest-quality parts and precision-machined tolerances. These Engines are backed by a 3-year - Unlimited mile warranty! All of ATK's manufacturing facilities are both QS-9000 and ISO 9001 certified, making them one of few engine remanufactures in the world to do so. Every engine is tested for compression, oil pressure, oil leaks, engine noise and general operating condition before shipment. Engines are shipped by truck freight. When you're ready to return your exchange core - the process is simple with our 360-Degree Core Guarantee. Simply stated, your engine core need only be the same type as the one supplied, complete with no visible damage and be able to turn over 360 degrees. Core pickup is easy. Place it in the crate and call the pickup number provided with the bill of lading. We pay the freight back. A Quadratec representative will contact you regarding the exact year of your existing engine, along with VIN number and additional shipping details. Please provide a daytime phone number and/or email when ordering.

Product Details
These motors include a full range of new parts including most of these components: balanced pistons, balanced rods, valves, valve guides & lifters, rings, wrist pins and bushings, main connecting rod and camshaft bushings, timing chain, oil pump, brass freeze plugs, as well as a premium gasket set and all oil seals.

All engine blocks are magna-fluxed, bored, precision honed and mains are line-honed. The camshaft bearings are line-bored for accurate center-to-center clearance; all blocks & cylinder heads precision surfaced; cylinder heads magna-fluxed & machined for three-angle valve seats. All crankshafts are stress-relieved, precision ground and micro polished. Camshafts are precision ground or replaced with new.

Fitment
Fits These Vehicles
00-01 Jeep Cherokee (XJ)

You can buy a crate engine Mopar Stroker for $3667.

You understand those engines are rebuilt, not new?

Nothing wrong with that. Just so you know.

Will I have to reprogram or buy a new ECU for the jeep ? Or is it just install motor, then plug and play from there?

Exactly. A real "new" engine could only come from Chrysler/Jeep and if available, it would be cost prohibitive. Remans from reputable sources are quite good. Also keep in mind that your core charges may not be refunded if the block is visibility damaged.

Head over to US Auto Parts at 18 and Van Dyke. Look into a couple jeeps they have with good engines. Even if you have to do a bench rebuild, its still a ton cheaper than a reman.

I just checked the Mopar website for stroked kits do you know which engine it would be I don't see it in there , if you could forward the link to what motor it is that would be appreciated

Thanks for the info I will ask my friend he is the mechanic that will be doing the work I'll see if we can go that route with the engine rebuilt , he might not have the time to do it,do you guys on this forum have any suggestions on who could do the work ?