Hey folks,
My wife and I owned a '96 XJ that we built a 4.7L stroker for but never installed. Sadly, we ended up selling the '96 and moved across the country thanks to Uncle Sam :us: but we kept the 4.7L. Fast forward a few months, I found a smoking deal on a very clean '89 XJ with a horribly knocking 4.0L, has the Laredo package with an AW4 and I trailered it 2hrs home. The purpose of this 89 is strictly off road after the engine break-in period. We trailer our rigs to off road parks and trails, plus in Minnesota we have no emissions testing or vehicle inspection so I want to get aggressive with the 4.7L swap as far as what stays under the hood.
We now have the old 4.0L out (anyone need it?) but I'm waiting to put the stroker in until things are cleaned up. I'm seriously contemplating finding a junkyard HO Jeep and taking the intake manifold, exhaust header, COMPLETE wiring harness and PCM so I can convert this '89 to OBDII. Gauges must work, lights fully functional and it has to be reliable otherwise my wife won't drive it. I come from the LS1 scene and can't imagine what horrible things might happen with an untuned OBDI RENIX computer trying to manage the fueling needs of a stroked 4.7L.
What I really need, above all else, are tips, insight and wiring diagrams for the RENIX system and H.O. OBDII system so I can start merging harnesses. Any how-to's or past experience would really help.
If you don't have much on the important question above, I'm also working on the following items during this engine swap.
Eventually this Cherokee will be on Dana 60's, 38's, stretched and long-armed. Engine bay first though and running.
My wife and I owned a '96 XJ that we built a 4.7L stroker for but never installed. Sadly, we ended up selling the '96 and moved across the country thanks to Uncle Sam :us: but we kept the 4.7L. Fast forward a few months, I found a smoking deal on a very clean '89 XJ with a horribly knocking 4.0L, has the Laredo package with an AW4 and I trailered it 2hrs home. The purpose of this 89 is strictly off road after the engine break-in period. We trailer our rigs to off road parks and trails, plus in Minnesota we have no emissions testing or vehicle inspection so I want to get aggressive with the 4.7L swap as far as what stays under the hood.
We now have the old 4.0L out (anyone need it?) but I'm waiting to put the stroker in until things are cleaned up. I'm seriously contemplating finding a junkyard HO Jeep and taking the intake manifold, exhaust header, COMPLETE wiring harness and PCM so I can convert this '89 to OBDII. Gauges must work, lights fully functional and it has to be reliable otherwise my wife won't drive it. I come from the LS1 scene and can't imagine what horrible things might happen with an untuned OBDI RENIX computer trying to manage the fueling needs of a stroked 4.7L.
What I really need, above all else, are tips, insight and wiring diagrams for the RENIX system and H.O. OBDII system so I can start merging harnesses. Any how-to's or past experience would really help.
If you don't have much on the important question above, I'm also working on the following items during this engine swap.
- Trying to wrap my head around how the '89 XJ gets its braking power. There's no vacuum booster and there seems to be a monster ABS module on the passenger side fender. I want to delete this ABS module and upgrade the brakes at the same time. Add a '96+ vacuum booster and MC? Still learning this system.
- Deleting as much emissions related as possible. Trying to simplify all the vacuum hoses, pretty up the engine bay and make it easier to work on. We're going to keep cruise control, even though it will most likely never be used at this time.
- Fuel evap/emissions box under the hood needs to go. I'm building a fuel cell in the back and will have a 1-way vapor valve vented to atmosphere like my buggies.
- Converting the old '89 radiator/cooling system to newer HO radiator w/cap. Doing away with surge tank.
- Deleting all A/C. Keeping heat.
- Relocating battery to rear cargo area.
- Wanting to upgrade/replace/change the air intake and filter design to something more of an "under hood snorkel"...but not sticking out of the body. I think I've seen some guys go through the cowl/wiper area?
Eventually this Cherokee will be on Dana 60's, 38's, stretched and long-armed. Engine bay first though and running.
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