4.0 to renix swap
11-18-2013, 03:09 PM
#1
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Year: 1994 and 1996
Model: Cherokee
4.0 to renix swap
Well wondering what all would be "different" if I swapped out my tired and leaking engine from my 91' with a much much fresher renix that is for sale on the boards.
I have a aw4 tranny on my 91' and know next to nothing about the renix.
I had some parts that were to go on my existing engine -water pump, thermostat and APN header: not sure if they work on an 88-89 renix.
Can anyone enlighten me concerning issues I would possibly see in the engine swap as well as the pros/cons over the renix?
I have a aw4 tranny on my 91' and know next to nothing about the renix.
I had some parts that were to go on my existing engine -water pump, thermostat and APN header: not sure if they work on an 88-89 renix.
Can anyone enlighten me concerning issues I would possibly see in the engine swap as well as the pros/cons over the renix?
11-18-2013, 05:25 PM
#3
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Year: 1994 and 1996
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11-18-2013, 08:08 PM
#5
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
As far as I know the only big change between RENIX and Chrysler models was the head design, throttle body, and lack of a knock sensor bung. I don't see any big issue with the swap.
11-18-2013, 08:21 PM
#6
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Year: 1990
Model: Cherokee
Engine: 4.0
Chrysler and Renault motors both had knock sensors, his main issue will be the wiring, most of the harnesses should be the same, but not 100%
11-18-2013, 08:24 PM
#7
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Year: 1996
Model: Cherokee
Engine: 4.0L I6 (The best engine ever made)
yeah, electrical connections are gonna be different. And I don't think you'll be able to keep that aw4. I think it's because the renix jeeps had a PCM while non renix have an ecu. Correct me if I'm wrong, please
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11-18-2013, 08:29 PM
#8
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Just so were on the same page here, he is talking about doing an engine swap not turning a Chrysler model into a RENIX?...
If all he is doing is a longblock there should not be any major problems?
If all he is doing is a longblock there should not be any major problems?
11-18-2013, 08:52 PM
#9
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Year: 94
Model: Cherokee
Engine: 4.0L
Correct, OP is asking if a Renix era longblock can be swapped into his 91 OBDI XJ.
I know guys are doing HO engines into Renix XJ's but i'm not sure if there's a "gotcha" doing the opposite.
11-18-2013, 10:57 PM
#11
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Renix into a '91 will be fine. Remember to treat it as a long block! Use ALL of the '91's wiring and sensors. There may be a slight difference in the flex plate/flywheel that affects CPS reading so use the '91's as well (can't remember). While the Renix is out get the OFA off and put a proper SAE thread adapter on with some new O-rings.
Pump shouldn't be an issue with the newer accessories. Use the 1991's manifolds and and I believe the combo gasket too. Cruiser54 has this mentioned in one of his writeups somewhere.
And no Chrysler XJ has a knock sensor...
Pump shouldn't be an issue with the newer accessories. Use the 1991's manifolds and and I believe the combo gasket too. Cruiser54 has this mentioned in one of his writeups somewhere.
And no Chrysler XJ has a knock sensor...
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