1999 4.0 to 83 CJ8 fuel supply solved.....I THINK - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 01-07-2002, 05:36 PM
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1999 4.0 to 83 CJ8 fuel supply solved.....I THINK

I bought a "TRU-FLOW in-line fuel pump from napa and found a "Mallory" Adjustable Regulator part #4309 (infinite pressure adjustable to 3-65 psi). I spoke with the jeep parts dealer and he made the above recommendation. Said the regulator should be mounted close to the fuel rail and dialed in to supply a constant 50-51 psi to the rail. This would allow me to use my 1983 style (new) 22 gallon poly tank / sender plumbed to the 1999 fuel rail without the rail mounted
regulator / return line. My only question I am not sure of the answer too is will the 1999 wiring harness allow me to
use the stock fuel gauge or will I need to figure something else out???

Anybody else have any opinions / comments on the above??

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post #2 of (permalink) Old 01-07-2002, 08:33 PM
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Re: 1999 4.0 to 83 CJ8 fuel supply solved.....I THINK

Sounds like it might work, Bill ... I sure hope so [img]/wwwthreads_images/icons/smile.gif[/img].
A close to stock tank low pressure pump seems to be required prior to the FI pump for good consistant MPI Kit reliability so my hope for you is that regulator will keep constant pressure as needed.
Please let us know if it works!

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post #3 of (permalink) Old 01-07-2002, 09:49 PM
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Re: 1999 4.0 to 83 CJ8 fuel supply solved.....I THINK

Go down to Auto Zone and get a fuel pump for an '89 F-150 with a 5.0. I believe it is an E-3000. $79 and a lifetime warranty. And get the fuel filter to match. It's been working great for me.

CJ-8, 4.0, NP435, D44 x D60, ARB's, 4w Disc, 2"YJ springs, SOA, 1" Body lift, 38.5" TSL SX

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