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Unread 06-13-2014, 03:50 PM   #1
BlueCJ402
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CJ fuel injection

I'm interested in swaping out my weber for a fuel injection. Does anyone have any recommendations on brands, brands available, war stories or anything I should be aware of?

I have a 84' CJ7 4.0.

Thank you.

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Unread 06-14-2014, 12:56 PM   #2
jason280
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Are you looking to simply do a TBI or Howell style fuel injection conversion, or drop in a 4.0 head with fuel injection? I considered running a 4.0L head on my 258, but ended up going with an entire replacement 4.0 out of a '93 Cherokee.
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Unread 06-14-2014, 06:11 PM   #3
BlueCJ402
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No head replacement, just a Howell tbi type, is there any other brands out there that you can think of?
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Unread 06-14-2014, 09:27 PM   #4
BlueRubiconrich
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a webber likes to run on road at 3.5 . and 1.5 offroad just add a fuel pressure regulator to the webber and you will love it . I did it and it works great.and cheap too.

I don't use a return line and I was pummping out 7PSI.
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Unread 06-15-2014, 03:14 PM   #5
Tollster
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Quote:
Originally Posted by BlueRubiconrich View Post
a webber likes to run on road at 3.5 . and 1.5 offroad just add a fuel pressure regulator to the webber and you will love it . I did it and it works great.and cheap too.

I don't use a return line and I was pummping out 7PSI.
Where is the regulator mounted at on your CJ Blue?

I have a weber 38 DGES on my 80, 4.2, and have never really been able to dial it in, it seems to run rich, as I have always had a backfire through the exhaust when I let off the throttle, particularly on long downhills.
~Tol
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Unread 06-17-2014, 02:46 PM   #6
cruiser54
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Quote:
Originally Posted by Tollster View Post
Where is the regulator mounted at on your CJ Blue?

I have a weber 38 DGES on my 80, 4.2, and have never really been able to dial it in, it seems to run rich, as I have always had a backfire through the exhaust when I let off the throttle, particularly on long downhills.
~Tol
Fuel pressure is super important.
A regulator can be located in the fuel supply line between the fuel pump and carb.
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If you own a Renix Jeep, you'll want to check this out. >

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Unread 06-19-2014, 06:17 PM   #7
BlueRubiconrich
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sorry it took so long ,I run my reg right off the carb with just a small fitting
I was told that was best.
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86 CJ7 258,T18,Scout Dana300,twin sticks,Dana44's,4W Disc, locked,35's,YORK OBA,Warn 8274,fullcage.
51 M100 1/4 ton Jeep trailer
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Unread 06-19-2014, 06:28 PM   #8
cruiser54
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Quote:
Originally Posted by BlueRubiconrich View Post
sorry it took so long ,I run my reg right off the carb with just a small fitting
I was told that was best.
I've done that also. Works great.

Here's the rub on this whole deal. You need to adjust the FPR using a fuel pressure gauge. Do NOT trust the numbers on the regulator itself.
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Quote:
Originally Posted by chris87xj View Post
If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

Cruiser's Mostly Renix Tips
My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
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