New xj engine needed - JeepForum.com
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post #1 of 6 Old 10-19-2021, 12:43 AM Thread Starter
skyryder55
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1988 MJ Comanche 
 
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New xj engine needed

Well I just found a little gem. Decided I wanted to buy an xj. Been looking for a couple weeks and seeing the stupid prices they sell for.
Stumbled across one located in British Columbia. I'm in Manitoba.
Super clean unit. Zero rust. 1998 XJ 2 door SPORT. 175000 kms. But has a blown engine.
1500 cdn for jeep. Will cost me about 1500 to ship it home. Now I need to source an engine.

Want to confirm what engine years I can replace with.
From what I gather 91-01 will work. But avoid 2000 and 2001 due to head issues.


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post #2 of 6 Old 10-19-2021, 07:28 AM
cruiser54
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91 to 99 bolts right in.

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post #3 of 6 Old 10-19-2021, 10:02 AM Thread Starter
skyryder55
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Are those years all same hp specs?

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post #4 of 6 Old 10-20-2021, 06:43 AM
superj
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the hp/tq is decided by the head and the fuel/exhaust system since the engines are all the same 4.0 bore/stroke.

zj/wj grand Cherokee engines work too, as well as wrangler engines. we used a 98 grand Cherokee engine in our 98 Cherokee two door a few years back.

the xj is the only jeep left in the driveway
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post #5 of 6 Old 10-20-2021, 09:38 AM Thread Starter
skyryder55
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Ah. OK perfect thanks.

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We are borrowing it from our children.
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post #6 of 6 Old 10-20-2021, 05:57 PM
CJ7-Tim
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XJ Cherokee and ZJ Grand Cherokee 4.0L engine blocks interchange. (1991 to 1995 YJ Wrangler and 1997-1999 4.0L TJ Wrangler blocks will also interchange in XJ/ZJ and visa-versa).

Remove and re-use ( or replace with new ) as needed or required from your original engine: Intake/Exhaust manifolds, motor mounts, throttle body, fuel injector rail, flex plate/flywheel, cylinder head, water pump, distributor-less ignition or distributor assembly, OBD engine computer sensors, fan belt driven accessories, and/or mounting brackets.


2000+ TJ Wrangler and WJ Grand Cherokee 4.0L engine blocks interchange.

XJ/ZJ blocks do not interchange with 2000+ TJ Wrangler or any WJ Grand Cherokee blocks without significant modifications.

TJ Wrangler and WJ Grand Cherokee 4.0L Engine block castings underwent major physical* design changes effective in the 1999 WJ Grand Cherokee, and 2000 TJ Wrangler. These “S” VIN code engine blocks from a 1999-04 WJ Grand Cherokee and 2000-06 TJ Wrangler are not bolt on interchangeable with any XJ Cherokee or ZJ Grand Cherokee engine block (nor with any 1997-99 TJ engine block).

The reason why these blocks do not interchange is that the casting design changes relocated numerous bolt holes, altered the physical location of all the fan belt driven accessories, and in some areas eliminated the metal that could be drilled and tapped for the earlier configuration of motor mount bolt holes and fan belt driven accessory mounting bracket bolt holes.

XJ: "Regular" (not Grand) Cherokees 84-01
ZJ: Grand Cherokee 93-98 (Gen1)
WJ: Grand Cherokee 99-04 (Gen2)
YJ: Wrangler 87-95 (Gen1)
TJ: Wrangler 97-99 and 2000-06 (Gen2)
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