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mopar mpi

Grrrrrrr...... This is bad news.... This has been on my "eventual" to do list...... Now is not great timing. May have to bite the bullet and sit it on my shelf.
 
Wow, this is huge if that kit goes away. I see Quadratec still lists them (at a higher price than mentioned above), but who knows what that means about actually having them.
 
I've never understood the investment in the kit when you can buy a couple complete good running 92-96 XJs with high output 4.0s for the same price. I am half kidding as most people's lifestyles don't tolerate a rusty hulk of an XJ laying around or the time etc to do such a thing. Most people want plug and play, non greasy shiny new parts, and detailed instructions. :) :cheers:
 
So I know the Mopar MPI is based on the 94-95 FI system with the intake machined to fit the 4.2L. Anybody know what needs to be done to that 4.0L intake to fit the 4.2L head?

Just looking on ebay, you can get a complete mid-90s 4.0L engine for $400 + another $200 for the harness.
 
From the kit I had, all of the parts were brand new Mopar parts. I don't imagine Jeep is still producing some of these parts, 1995 was 20 years ago:eek:

The kit was worth it to me for several reasons:

1) All brand new parts - no need to worry about broken old stuff from a junk yard that might be on its last leg
2) The computer/harness was built for this kit, so no time spent making a harness, and worrying about computer issues
3) The front mounted crank sensor/harmonic balancer - saved time over modifying a CJ bell housing for this sensor

The "kit" went together fast. The under hood stuff was dead simple. modifying the fuel lines took longer. If you started on this kit on a Friday night, you would easily have the Jeep back running on Sunday. Sometimes saving time is worth the money:twocents:

After installing this kit, and finishing/redoing a TBI 350 swap in another one of my Scramblers, I feel confident I could go junk yard hunting and make my own MPI kit, but it would take much longer then a weekend:twocents:

That sucks if Hesco quits making the complete kit, I might need to snag another kit now for any future projects:shrug::wave:

As far as the complete 4.0 swap, to me, the 4.0 is weak at low RPM compared to the 4.2. The 4.0 does have better high RPM power, though:twocents:
 
mr. boh said:
So I know the Mopar MPI is based on the 94-95 FI system with the intake machined to fit the 4.2L. Anybody know what needs to be done to that 4.0L intake to fit the 4.2L head?

Just looking on ebay, you can get a complete mid-90s 4.0L engine for $400 + another $200 for the harness.
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I will go take a look in the barn. I have a mopar intake and a factory one on the shelf. I really don't think there is any difference. The biggest problem I see is if they quite making all the parts. You really need the crank sensor relocation kit. Also the reworked harness is so much easier. Just a few wires to hook up.
 
There was a MPFI kit on the Austin Craig list a few months ago, may still be there.

I also run MPFI, with a 4.0 head, and a custom grind comp cam (mild RV style) and have no problems with 87 octane. I think my motor runs great and have no issues with power at 60 mph, but mine is a 5 speed.

Yes the kit is expensive but it goes together nicely, and it saves time searching a JY for parts or buying a junker to pull parts from and then scrapping the rest. As Ferris Bueller would say "if you have the means I highly suggest it". Different strokes for different folks...

Best of luck, bummer they are not selling from Hesco
 
YJ-8 said:
There was a MPFI kit on the Austin Craig list a few months ago, may still be there.

I also run MPFI, with a 4.0 head, and a custom grind comp cam (mild RV style) and have no problems with 87 octane. I think my motor runs great and have no issues with power at 60 mph, but mine is a 5 speed.

Yes the kit is expensive but it goes together nicely, and it saves time searching a JY for parts or buying a junker to pull parts from and then scrapping the rest. As Ferris Bueller would say "if you have the means I highly suggest it". Different strokes for different folks...

Best of luck, bummer they are not selling from Hesco
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They are selling them but they told me they are limited. So I guess if you really want a brand new kit, get it quick. This is your last chance! I think I decided on the junkyard route. Some stuff I will get new like injectors and whatever else I see fit. My local yard has probably at least 10 to 15 xjs, so I'm pretty confident I will be able to get most everything I need.
 
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