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Affordable Fuel Injection 4.3

Discussion in 'Builds and Fabricators Forum' started by Jw60, Jan 1, 2021.

  1. Jan 21, 2021
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
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    I've started the changeover all of the sensors are plugged into something or another and put on the best I could for now. I already have o2 bungs on each bank so I put the new sender on the roomier passenger side. Temp sensor is just below the thermostat replacing the worse for wear willys thermostat. I have an aftermarket temp guage that I want to relocate or remove altogether.

    The throttle linkage is soo close it's sad but I want to get some heim joints on the throttle anyway.

    [​IMG]20210121_161956 by Joe with a jeep, on Flickr

    The original heater and ducts so there isn't much room on the driver's side for the grommet and pcm. I'll up size the speedometer cable hole and pull the cords thru there. While I am at it i will pull a heavy guage cable to the cab from the battery for a fuse panel. One of the other projects is adding a trailer brake controller for the little popup.

    Edit: from this point forward it is going to be the same process as a tbi 4.3 or 350 swap with a aftermarket harness and pcm flash for a manual Transmission.

    I am feeling pretty good about this right now. Definitely easier than physically putting the engine in there to begin with.
     
    Last edited: Jan 21, 2021
    Ohiowrangler likes this.
  2. Jan 23, 2021
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
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    Another 3 hours in today dedicated to fuel delivery.
    Big hole in tank is cut. Holes in the body for fuel lines are drilled.

    Decided to re-route the lines from the passenger side for the Chevy mechanical fuel pump to a sort of direct route across the body from tank to throttle body using the back side of the accelerator pedal area and staying on the tub with 6' of 5/16 steel line for both the feed and return lines. I'll make some brackets to secure the tubing and keep them from rubbing on stuff.
    The underseat tank is beginning to rust inside and on the bottom. I will likely move to a rear tank in the next few years then replace the front tank with poly or build a custom tank.

    [​IMG]20210123_165433 by Joe with a jeep, on Flickr

    [​IMG]20210123_165237 by Joe with a jeep, on Flickr

    [​IMG]20210123_165230 by Joe with a jeep, on Flickr

    [​IMG]20210123_165213 by Joe with a jeep, on Flickr

    Now evidently when this jeep went swimming I never got all the dirt out from under the tank. the floor is rusted and the bottom of the tank needs help.
    [​IMG]20210123_151541 by Joe with a jeep, on Flickr

    [​IMG]20210123_151600 by Joe with a jeep, on Flickr

    Guess it's time to find old serpentine belts
     
  3. Jan 25, 2021
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
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    I didn't get a chance to work on the TBI swap today but I got time in Thursday and Saturday. I am eager to get out there and have it all buttoned up. I also did some reflections and I think this was the last time it left the house. It barely ran the entire way back home looks like it was 5 months ago seems like yesterday.
    [​IMG]20200822_123301 by Joe with a jeep, on Flickr

    The fuel injection should make a night and day difference in drivability, reliability, and enjoyability.
     
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  4. Jan 28, 2021
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
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    Got a little time in last night and at lunch today.
    2hrs of work and I'm not done with the access cover for the tank.
    If it wouldn't look suspicious I would put a bunch of black iron pipe together with the line from the tank, the return line, and the feed for the pump... but I know my luck.
    Since this picture I have all 30 pilot holes drilled I just need to tap or clearance or both or use the big hole saw on em.

    [​IMG]20210127_203007 by Joe with a jeep, on Flickr
     
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  5. Jan 30, 2021
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
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    Another 3 hours today and things are starting to come together. Hopefully by reading this it helps the next people know what to expect with a engine swap or carb to tbi conversation.

    [​IMG]20210130_163310 by Joe with a jeep, on Flickr

    [​IMG]20210130_163339 by Joe with a jeep, on Flickr


    It's raining hard enough to flood the garage floor so I didn't make any progress on fuel lines, pump, and power to the pump. I don't exactly like the path of the fuel lines. The tank access is also something I would do differently... maybe buy a later tank if possible.
    With that I am here with the access and cover. The 3.5" hole is winning the fight and it is taking a long time to do. [​IMG]20210129_120835 by Joe with a jeep, on Flickr

    What I did do today was under hood wiring and opening up the hole in the firewall for the speedometer cable. The instructions say a 1.5" hole will work but I barely got the pcm plugs in a 1.75" hole. Now I am getting slowed down by a lot of tea time and "doing it right" side bars. Everything is a pain under my dash since it is welded on and never bolted. I got a bit stuck upside down in the fetal position.
    [​IMG]20210130_163432 by Joe with a jeep, on Flickr

    the to-do list: most is under dash, under the jeep, or i am under tooled.
    12v battery to pcm
    Crank to pcm
    Ignition to pcm
    Mount the obd2 port and the pcm.
    All of these need stuff improved on the existing harness as most everything under dash is original wire.
    [​IMG]20210130_163505 by Joe with a jeep, on Flickr

    After the basics I still have the idle lifts
    12v for my lower rpm lift.
    I need to verify but the second idle rpm lift says to use a switch to ground. I'm not In a hurry for this one since it is going to be used with the York compressor for on board air someday.
     
    Last edited: Jan 30, 2021
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  6. Jan 31, 2021
    Fireball

    Fireball Well-Known Member 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Pullman, WA
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    For cutting big holes in metal like that with the hole saw, slow speed and some oil really helps.

    For thinner pieces like that, I also clamp it between a couple blocks of wood. This supports the metal and once you cut through the top piece of wood, it helps keep the hole saw centered in addition to the pilot. You can locate the hole by drilling pilot holes through the metal and wood and using drill bit to line everything up when clamping.
     
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  7. Feb 1, 2021
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
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    :contract: What he said... Clamp that sucker between some 1 bys or even plywood and you will be shocked at how fast and clean it will cut (assuming its a good hole saw).
     
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  8. Feb 1, 2021
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
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    It's not a good hole saw. I've made more progress with a drill bit about 90holes and a chisel. I should go to lowes and spend $15. If it weren't for covid I could likely have these ran out of stainless for a few bucks.
     
  9. Feb 4, 2021
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
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    Slowly nibbling away at it. Haven't left the house this week but to get the kids from school. the welded on dash is a pain in the butt right now.
    [​IMG]20210202_091311 by Joe with a jeep, on Flickr
     
  10. Feb 7, 2021
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
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    I apologize for not getting any pictures today but it was darn cold and I'm pretty sure I strained my foot around the house yesterday.
    Anywho...
    Fuel pump is wired. Hoses are in place.
    12v battery to pcm - done
    Crank to pcm - done
    Ignition to pcm - done
    Mount the obd2port and the pcm. Waiting till running.
    To-do
    Mount and wire the Check engine light... I have a plan.
    Temporary fuel lines to a 2gal fuel can so I can take care of rust issues with the tank.
    I also have a bunch of grommets to make and fuel line brackets to place.
    The idle lifts and some general cleanup will wait until spring. My foot be hurtin my hands be dried and cracked. I've got to replace wheel bearings on the Wagon so this needs wrapped up to be able to carry a single carseat as needed if the wagon has issues.
     
    Last edited: Feb 7, 2021
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  11. Feb 15, 2021
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
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    Progress is just slow with the weather as it is. I was all bundled up trying to work under the dash head on floor, back on fuel tank, feet on wheelhouse. Arm between the ebrake handle and body trying to get a wrench on the choke cable and put the check engine light there. I had to have it there so every time I go to pull the choke I am reminded... it ain't got one!!!
    This nd the throttle linkage should be the only visible indication that the engine isn't original. You would have to know what you are looking at to tell anyway.

    [​IMG]20210214_180427 by Joe with a jeep, on Flickr

    With the light hooked up I was done with the electrical checklist.
    Next step hookup the battery and prime the lines.
    The tank is still in work so I'm running with dip tubes into a 2gal can. It worked well as I could see the bubbles and fuel flowing. (I turned off the lp heater)
    Then it was time to turn the key and a video allows me to look back at the little things I missed when in the moment.




    The lower choke cable... (I forgot which was which) is going to get some changes when it's more favorable weather. That plan is to make a rotory switch and cable like the heater control. I have 4 electronic idle settings and it's a combination of 12v or ground to the two control wires. The goal with that is to keep the engine a little higher with lights and the plow basically replacing the hand throttle while being governed... this is very beneficial for say... onboard air or a welder... so your rpm won't wander with load changes and I can use the pulleys to put the highest idle of 1500 rpm at 120v for brushed motors, heating elements, and incandescent work lights. I plan to retain the hand throttle for control of the actual throttle on hills but the IAC should be adequate for the accessories.
     
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  12. Feb 15, 2021
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
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    You should have a a/c wire with the affordable kit. It tell the pcm to give more throttle to compensate for a/c need. You can hook a 12+ switch to it so you can manualy control that feature.
     
  13. Feb 15, 2021
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
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    Na see that's too easy. I gots two wires...
    [​IMG]

    Hot Idle is 700rpm
    The ac + trigger adds about 250rpm
    The ground trigger is about 500rpm
    Add all three and it's about 1500rpm
    I'll have a relay for the lift after the pressure switch so it will rev up only when pumping. I don't have the air system installed so there is plenty of potential.
     
  14. Feb 15, 2021
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
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    So you can add the ground trigger with the ac triger to get a 750 rpm ?
     
  15. Feb 15, 2021
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    Yes both can be on at the same time for an additional 750rpm to the 700rpm idle for 1450rpm.

    Idle 700
    Idle and ac 950
    Idle and ground 1200
    Idle and both for 1450
    Seemed to be a nice linear amount.
     
  16. Feb 19, 2021
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

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    Had a lunch date with the old girl with the goal to get the base timing dialed in. It started and ran ok for not having timing set. Let it warm up for a fee min then loosened the distributor. Then it died and the driver side injector kept spitting up. Probably should have waited until the afternoon and warmed it up with the space heater.

    Rear main is now also acting like a freshman on homecoming night... this cold does weird stuff.
     
  17. Feb 19, 2021
    scott milliner

    scott milliner Master Fabricator

    Seattle Wa.
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    TBI's do not like it when it ice up. I was told to use the heat riser tube on the exhaust manifold.
     
  18. Feb 19, 2021
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
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    Been having one on my 360 and it never had problem to start with the tbi over cold days.
     
  19. Feb 19, 2021
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
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    Well it seems I have a dirty injector. I reused the fuel tank to mechanical pump hard line for the post pump to tbi run. I was going to loop it to the return and run the pump a while before hooking it to the tbi but I forgot.

    Time to pull it off and learn what makes it tick.
    And yes I was coughing from the smoke...


     
  20. Feb 19, 2021
    Jw60

    Jw60 Sitting up n buckled down. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Sedalia MO.
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    This seems more like gunk from the old line.
    It was really shreaking. I hope that goes away.

    I really want to avoid a heat riser. Drivers side is too crowded with the Ross steering. Passenger side has the 02 sensor. Almost Rather put a block heater on it and drill / tap the adapter for a coolant line.
     
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