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Unread 01-17-2006, 07:29 AM   #1
RockJeep
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TOTW Fuel Injection

Ok this one should be good. What is the best, cheapest, most reliable, easiet to install, etc fuel injection setup? Why would you want to go EFI? What are ALL the benefits? What all do you need to complete the swap? Who offers ready to bolt on kits? etc etc?

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Unread 01-18-2006, 11:44 AM   #2
jadams68
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We are currently building a Junkyard EFI system for a 4.2/258 CJ-7 application.
You can follow along at http://www.bustedjeep.com/projects/junkyardtbi.asp

It just started, and there will be fresh content today and tomorrow.

- James
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Unread 01-18-2006, 11:47 AM   #3
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I used to run a Howell TBI, upgraded last summer to the Edelbrock Pro-Flo and love it. I had nothing but problems with the TBI set up. Bad ECM, had to rebuild the throttle body twice due to leaking gas, but it was still better than a carb.
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Unread 01-18-2006, 06:39 PM   #4
CJ51973
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I have the junkyard special TBI out of a '89 4.3L S10 Blazer. It works great. The ECU isn't the two that are always listed (1227747 or 1228746) but it was the one in the S-10 (1228062) and it matched everything else. The harness was the same as the others. The best $300 I ever spent on my Jeep (includes everything). I got a lot of help from jadams68 & rjcj-8 from this forum & Bill USN-1 from the IH forum. A few more of us do this and we ought to get pretty useful helping out others. I kicked some info toward jadams68' write up. Beats $1200 for a Howell Kit.
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Unread 01-19-2006, 05:41 AM   #5
Bill USN-1
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Quote:
Originally Posted by CJ51973
I have the junkyard special TBI out of a '89 4.3L S10 Blazer. It works great. The ECU isn't the two that are always listed (1227747 or 1228746) but it was the one in the S-10 (1228062) and it matched everything else. The harness was the same as the others. The best $300 I ever spent on my Jeep (includes everything). I got a lot of help from jadams68 & rjcj-8 from this forum & Bill USN-1 from the IH forum. A few more of us do this and we ought to get pretty useful helping out others. I kicked some info toward jadams68' write up. Beats $1200 for a Howell Kit.
Completely agree!!

Been running TBI and helping others for about 4 yrs. (not just IH's)

Very simple install (for most) if you are bolting it on a stock motor. Will require a new chip if running cam/headers.....
Same system as Howell, CustomEFIs and AFI. Just DIY for about $300. and you have timing and fuel control. Howell does mostly fuel only.
I've done 4 cyl and V8's and assisted on 6 cyl applications.
All using the same ECM's.
You can add another $150 if you want to program your own chip!!

Due to a server/domain swap some of my info was lost but most is on the
www.binderplanet.com
and
www.justih.org

in the fuel injection forum.
I'm in the process of getting it all reposted.

Almost all the problems I have seen were a result of installation error or a problem with the fuel system that was there before the system was bolted on.


Go from -20* to +100* and from sea level to 14,000 ft and not have to mess with a thing!! no jet swaps! no timing changes! It just runs.

Most are really afraid of wiring.

Once you sit on the floor for a couple hours, you find out it's not that bad!!!
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Last edited by Bill USN-1; 02-11-2009 at 09:41 PM..
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Unread 01-19-2006, 12:28 PM   #6
jadams68
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Bill helped me when I needed to tune my Howell ECM for the upgraded header, cam and 4.0L headswap I did. Howell burned me a new chip and it's been a pleasure to drive it again.

I made some updates to the writeup... I have to link the small images to the larger ones today and Kevin is sending info on the adapter plate and harness.
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Unread 01-20-2006, 12:46 PM   #7
jadams68
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Writeup updated with wiring harness info.
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Unread 01-20-2006, 05:25 PM   #8
Bill USN-1
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another way I have removed the epoxy is to use my heat gun and just melt the Goo (technical term) right off. I hold it over a trash can when I do it.

May not be any faster.

The other way is to just make your wire length adjustment right there.
So just cut the whole harness in half and then put you splices in there when yo have the length of each wire set in the vehicle!!

You are probably going to do it anyway!!
I use the marine/aircraft environmental splices or solder and heat shrink tube!!
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Unread 01-21-2006, 12:47 PM   #9
jadams68
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I added Bill's comments of removing the epoxy to the writeup.

For everyone following that has done this, or is trying to keep up, let me know what's missing, what the questions are... toss your input like Bill did because we don't want to miss anything here.

At the end, the goal is cheap, well running EFI on a jeep CJ-7...period...

We need your input!!

- James
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Unread 01-22-2006, 08:47 PM   #10
jlynch
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I have a few questions. First ever writeup I have seen has been for 6 cyl. motors if you have a V8 do you need to find a 305 TBI or will the 4.3 work? Second and again with HEI conversions all I have seen is 6 cyl conversions does it work the same for V8 engines? Last does anyone know what fuel pump could be installed in a CJ tank to work with this conversion? I have a 79 CJ-7 with a 304 I would like to do a TBI and HEI swap. Thanks for any info!!!!!!!!
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Unread 01-23-2006, 12:36 AM   #11
Bill USN-1
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Quote:
Originally Posted by jlynch
I have a few questions. First ever writeup I have seen has been for 6 cyl. motors if you have a V8 do you need to find a 305 TBI or will the 4.3 work? Second and again with HEI conversions all I have seen is 6 cyl conversions does it work the same for V8 engines? Last does anyone know what fuel pump could be installed in a CJ tank to work with this conversion? I have a 79 CJ-7 with a 304 I would like to do a TBI and HEI swap. Thanks for any info!!!!!!!!

Have you followed any of the links posted in this thread?

If you limit yourself to 6 cyl coversion threads then that's what you will see.
The majority of swaps I see in a jeep are the 350 chevy. This is also the prime source for the FI components.

For the TB size....all small block chevy TB's are 1 11/16 bore. that's for 4.3, 5.0, and 5.7's.
The 454 went to a 2" bore. (used as an upgrade to the smaller V8's)

The injectors on the SBC TB are the only thing that are differnt between them. Will a 4.3 TB work on a 304...maybe. But will take retuning the chip for the proper fuel. I would go with the plentiful 305!!

This is for 88-91. In 91 they changed the style of TPS plug (Throttle position sensor) from the flat to a small round one.

Can't help on the intank pump...I do externals!!
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Unread 01-24-2006, 05:26 PM   #12
jadams68
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Writeup has been updated.

http://www.bustedjeep.com/projects/junkyardtbi.asp
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Unread 01-25-2006, 07:29 PM   #13
jadams68
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Writeup has been updated.

http://www.bustedjeep.com/projects/junkyardtbi.asp
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Unread 01-27-2006, 03:09 PM   #14
jadams68
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Writeup has been updated.

http://www.bustedjeep.com/projects/junkyardtbi.asp

So far we've:

1) Hit the yard for parts.
2) Built the TBI wiring harness.
3) Rebuilt the Throttle Body.

Coming soon:

1) List of parts you need to buy.
2) The dimensions for the TBI adapter plate (for 258 motors)
3) The wiring schematic for computer controlled timing with GM HEI Distributor.
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Unread 01-28-2006, 08:00 AM   #15
jadams68
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Writeup has been updated.

http://www.bustedjeep.com/projects/junkyardtbi.asp
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