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Unread 09-20-2012, 04:47 PM   #1
Derby-xj-21
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1998 XJ Cherokee 
 
Join Date: Mar 2012
Location: westminster, Vermont
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4.6l stroker questions

I am looking at buying a stroker that's already in a 89 xj, he only wants 500 for the whole jeep with engine included. I'm in it for the engine to swap into my 98 xj. He says he's been having problems with it when it gets warm out. When cold it runs like a top, when it heats up it starts to sputter out. Any ideas what the problem might be, or if it's a major or minor fix?

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Unread 09-22-2012, 12:16 AM   #2
ltrail
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1984 XJ Cherokee 
 
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Realistically it shouldn't matter as long as it has good compression in all cylinders . The 89 is ugly out dated junk and all your 98 goodies will be good on it.

What's the issue? No knocks and good compression its good to go
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84 xj 350tbi, sm465, 203/205, 60/70. links and other junk.
what size sawzall blades does it take to fit 40's?
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Unread 09-23-2012, 05:01 PM   #3
Derby-xj-21
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It doesn't knock, runs good when first started, then starts to sputter. Maybe a sensor?
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Unread 09-23-2012, 09:24 PM   #4
ltrail
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Disregard the running condition if it has a bad sensor it wont matter! If the engine is going in a 98 the bad sensor from 89 makes no difference. What seems to be the issue?? Buy the junk and put it in!
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84 xj 350tbi, sm465, 203/205, 60/70. links and other junk.
what size sawzall blades does it take to fit 40's?
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Unread 09-24-2012, 09:51 AM   #5
Derby-xj-21
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Very true lol just wanted to be sure that it will all work out.
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Unread 09-25-2012, 10:42 PM   #6
cruiser54
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1990 MJ Comanche 
 
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Just do this backwards.

Cruiser’s HO into Renix Swap

This swap is easier than some will lead you to believe, generally those who have never done it. Those of us who have done it, like myself, will share with you the things that need to be done for a successful swap. Just think of it as swapping in a long block.

The HO and Renix have some differences but none that can’t be overcome very easily.

Any HO engine from an XJ or ZJ through 1998 can be used. One running change was that the rear of the head was no longer drilled and tapped for the temperature gauge sender beginning in the 96 model year. The sender can be relocated to the threaded hole in the thermostat housing taken from the HO engine. You’ll have to extend the wire to that location. Some brave souls even drill and tap the HO head for the sender.

You will be using the intake and exhaust manifolds from your Renix, along with all your sensors and wiring. Since the intake ports of the HO are slightly different, you use the Renix gasket. Exhaust ports are identical.
You will need to use your Renix distributor as it is different than the HO because they use different fuel management systems. The flywheel or flexplate from the Renix must be used so your CPS gets the correct signals. The valve cover from the Renix allows you to keep your CCV system intact and requires no modifications.

The HO block will have a plug in the coolant galley on the driver’s side of the block, closest to the front, which needs to be removed so your Coolant Temp Sensor can be installed in it’s place just as it is on the Renix. It requires a 5/16” square drive or a modified 3/8” drive that has been ground down to fit. Do this before installing the engine.

As for the knock sensor, which is located just above the oil pan on the driver’s side of the engine about mid way, all the blocks I’ve seen are threaded for it. If not, I’ve heard they may be drilled but not tapped. Tap the hole if that’s the case.


Revised 07/24/2012
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