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Thread: Hissem time machine is now carbureted

  1. #1
    Join Date:  Aug 2014

    Location:  Appleton,WI

    Posts:    33

    My VIN:    5754

    Hissem time machine is now carbureted

    The Hissem time machine is now carbureted. It was a slow and studied out decision. The time was right when I had to do a head gasket change and ended up taking the engine out and doing an engine overhaul. I have taken the fuel system apart before to do change the distributor cap and wires. At a later time I switched out the water pump and cleaned out the valley. Now that I had to take the heads off and switch out the liner gaskets, made it a convenient time to try out carbureting it. I did have to make my own air intake manifold. I also decided to go with a Holley 2300 double barrel 350 CFM manual choke. I wanted the manual choke due to the extreme seasonal temperatures in Wisconsin. I don't drive it with the salt, but it can be cold in the morning and real warm in the afternoon.

    Anyways, my car is an automatic, so I had to make my own kickdown switch. The Holley throttle and transmission parts are set up for a front mounted engine, so the transmission cable would have to be pulled from a different attachment point. I mounted a small moment switch that would be pushed once at the full open position. I went through all the wiring harnesses that I unplugged and only seven wires were what I needed to replace. I made individual wire plugs that fit over the pins in the original bulkhead plugs.

    I used a short bicycle cable and liner in place of the stock transmission shifting cable. I made a simple holding bracket that fits to the governor shifter and the other end goes to the carb.

    I wanted to make the air intake manifold that sat high enough to view the valley and have access to the coolant hose clamps. I also wanted there to be plenty of room for the air and gas to mix thoroughly. I wasn't sure how well it would work or not, so it was a big guess all around.

    I used the typical electric fuel pump. I also took out the RPM relay and plugged in a wire that triggers the fuel pump when I turn the key.
    I use a fuel pressure regulator and gauge before the gas goes into the carb.

    In the process of taking the engine out, I realized that the passenger side engine mount broke off. The engine was sitting slightly lopsided for several years and resting on the starter motor. When I had the oil pan and heads off, I TIG welded the broken part on and added more aluminum to reinforce it and sealed it to be water tight.

    I have been driving the car with awesome performance. It seems to have almost twice the acceleration. The shifting works great also. The manual choke has proven worth it in these cold mornings to precisely run. The choke cable is plenty long and runs through the firewall and blends in with the time machine hardware. The choke knob is mounted to the right of the steering column. There was a hole there from the previous owner, so it was now useful.
    It feels like it can get up to 88 mph in half the time. I have done a full frame off restoration four years ago and have almost worked on every inch of this car. I make it my daily driver in the summer, so carbureting it was practical for my needs.
    Attached Images

  2. #2
    Senior Member
    Join Date:  Mar 2014

    Location:  Lansing, MI

    Posts:    490

    My VIN:    04194: 5-Speed, Black Int, 79 Peugeot 604 Manifold, 05052: 5-Speed, Gray Int, 78 Peugeot 604 manifol

    Congrats on the successful fuel system swap and welcome to the wonderful world of carburation! Did you look into the mechanical fuel pump option?

    Glad to see that you were able to repair the motor mount bracket. I had the same issue with one of my DeLorean engines. I made the repair in 2002 and it's still going strong.
    4194 Since 7/98
    5052 Since 7/14

    1972 Buick Riviera
    1974 Bricklin SV-1 177
    1982 AMC Eagle SX/4 (4.2 I6, 4 Speed)
    1983 Pontiac Trans Am (Knight Rider Conversion in progress)
    1985 Oldsmobile Toronado (daily driver)

    Solex carb and antenna television guru.

    "My carbon footprint is bigger than yours!" :-)

  3. #3
    Join Date:  Aug 2014

    Location:  Appleton,WI

    Posts:    33

    My VIN:    5754

    Thanks, I know I might forget to mention some details. I did think about using a mechanical fuel pump, and I still might do that. I wanted to start with the electric to get the car running first. Electric fuels pumps are at every corner auto store but not the correct mechanical fuel pump. It is nice to be able to try different things with the simple set up and access to how the engine is now.

  4. #4
    Guy with a DeLorean Mark D's Avatar
    Join Date:  May 2011

    Location:  Stevens Point,WI

    Posts:    2,426

    My VIN:    6125

    Awesome work especially on the custom intake manifold! I'm glad you're back up and running after all the work you've been putting in lately on your car.

  5. #5
    Junior Member iOutatime's Avatar
    Join Date:  Aug 2016

    Location:  St. Peters, Missouri

    Posts:    28

    And I thought you would never get it done..

    Sent from my iPhone using Tapatalk
    Mason Fowlkes
    [email protected]
    St. Peters, Missouri

  6. #6
    Nothing witty here lest it offend
    Join Date:  May 2011

    Posts:    990

    Very interesting. What kind of electrical pump is it and what is the part number? Deloreans are great cars to simplify.

  7. #7
    Administrator Ron's Avatar
    Join Date:  Jun 2011

    Location:  North GA

    Posts:    6,065

    Club(s):   (SEDOC) (DCUK)

    Quote Originally Posted by SamHill View Post
    Very interesting. What kind of electrical pump is it and what is the part number? Deloreans are great cars to simplify.
    If you are starting from scratch, I remember Summit had AC (and other brand) pumps to match the pressure/flow requirements for any need for a regulator.

  8. #8
    Dr. Bob Bob635's Avatar
    Join Date:  Aug 2011

    Location:  Las Vegas

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    My VIN:    4675, 4190, 3114 and others

    Club(s):   (DMA) (DMWC) (NCDMC) (DCUK)

    Nice Carb set up!

    Really nice work on the manifold and carb set up. And yes the increase in performance is real. Your manifold works great with the dual overhead cams.

    Would like to see more of these conversions. So many D owners have FI systems that have constant problems. Can't beat the simplicity of a carb.

  9. #9
    Join Date:  Dec 2012

    Posts:    63

    carb setup

    Nice job----sounds like a sucessfull conversion----I made this same conversion several years back---mine ran great---excellent performance---easy, quick start---hot or cold---built my intake also---motorcraft 2100 carb---- my intake/ carb setup now for sale--I converted to a corvette engine. Anyone interested PM me

  10. #10
    LS Swapper Josh's Avatar
    Join Date:  Mar 2013

    Location:  Illinois

    Posts:    2,412

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    Club(s):   (DMWC) (TXDMC) (DCUK) (DOI)

    Quote Originally Posted by Bob635 View Post
    Your manifold works great with the dual overhead cams.

    Supercharged 5.3L LS4 + Porsche 6spd
    [email protected]

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