Fuel Injection

81laredo · 02-07-2010, 12:10 PM

I bought an '81 CJ7 recently to replace my '59 CJ5 and have a few questions. The '81 has the in-line 6 with 4 speed and is as far as I can tell still a stock CJ7 Laredo. I want to replace the Carb with Fuel Injection, primarily to get rid of all the Vacuum Lines! (I m in California)
I have heard different thoughts regarding the Howell and Mopar Kits and there is a big price difference between these two. Whatever I buy has to meet California Smog Requirements.
I was at a Wrecking Yard yesterday and can get the parts of off a Cherokee but not sure if that would be the right way to do this. Anyone with good/bad experiences they want to share?
Thanks in advance,
Steve

Cheepjeep85 · 02-07-2010, 12:14 PM

no personal experience but it is doable there is a write for that to. i read it the other day it seems fairly easy but i can't find it right at the moment. i know you don't want the renix injection off of a cherokee from 1987 to 1990 or 1991 i think

CoreyYoungCj577 · 02-07-2010, 12:22 PM

Quote:

Originally Posted by 81laredo

I bought an '81 CJ7 recently to replace my '59 CJ5 and have a few questions. The '81 has the in-line 6 with 4 speed and is as far as I can tell still a stock CJ7 Laredo. I want to replace the Carb with Fuel Injection, primarily to get rid of all the Vacuum Lines! (I m in California)
I have heard different thoughts regarding the Howell and Mopar Kits and there is a big price difference between these two. Whatever I buy has to meet California Smog Requirements.
I was at a Wrecking Yard yesterday and can get the parts of off a Cherokee but not sure if that would be the right way to do this. Anyone with good/bad experiences they want to share?
Thanks in advance,
Steve

Hi Steve how are ya doing? this looked like a cool idea. 4.2L Head Conversion - Putting a 4.0L head on a 4.2L block!! - Jeep at Off-Road.com here is another GM TBI Swap the one site that had the best write up is currently not operating so i think these may help you let me know

81laredo · 02-07-2010, 12:26 PM

Thanks, I should find out how to tell the difference before I go looking. When you find that link I am sure that it would be helpful.
Thanks again,
Steve

81laredo · 02-07-2010, 12:40 PM

Corey, thanks for the links!
I could use a link for the Cherokee Fuel Injection Swap if someone could help.
Thanks guys, great help!
Steve

Cheepjeep85 · 02-07-2010, 07:02 PM

i'll look for it when i get home, i'm on my moms laptop right now, i have a whole bunch of stuff in my favorites on my laptop, i think i got linked to it from one of the pages i saved in my favorites

BrockGrimes · 02-07-2010, 07:22 PM

affordable fuel injection
Affordable Fuel Injection - AMC/Jeep Throttle Body Fuel Injection

Grab a chevy throttlebody and computer from say a 90 with a similar size motor to yours.
a 4.3 for your 4.2 a 305 for a 304, etc.

With the throttlebody and computer you can pick up a chip and harness from AFI for about $300
and adapter to mount it on a 4.2 is about $50.

So for under $500 you can have TBI.

Check my thread here for extra info's:
Useful Info thought I'd share

BusaDave9 · 02-07-2010, 08:19 PM

I was just reading a fuel injection article in the March issue of JP Magazine before I came to the computer to read your thread. Pick up this issue. They are saying great things about the Performance Products Powerjection III fuel injection system. (low price and easy to install) This system is intended for a 4 barrel manifold but it will work with your strait six. You will need an adapter or better yet get a new intake manifold from Clifford or one of the other after market companies.

check out this link:
Professional Products Online

81laredo · 02-07-2010, 08:36 PM

I will pick up a copy, of the mag. Remember guys that it needs to be California Smog legal.
(I wish that I lived somewhere else)

BusaDave9 · 02-07-2010, 08:58 PM

JP Magazine also posts their articles online but not until everyone gets the printed version. They do have a little on their web site but not as much. I never did see anywhere if it is legal in California. One thing they say is it's "hard to believe it's so easy".
What JP Magazine does have on the internet is here:
Fuel-Infected! | Custom Jeep Projects Blog & Discussion at Jp Magazine
Here is another link:
Professional Products Powerjection III EFI System | Truckin' Magazine Article at Automotive.com