Scale model cockpit FPV

cool scale cockpit video

Funny Zoo Snap

man enjoys elephant My wife noticed this in the family archives.

RC Nitro motorcycle racing

rc motorcycle Motorcycle racing in Lilliput.

Manned RC Multicopter

manned multicopter
Here’s an RC multicopter big enough to ride on!

Make: Talk 004

make: Talk 004
I had a fun time talking to Mark Frauenfelder in episode 4 of his new podcast, Make: Talk!

One Man Basement Band

one man band
I feel like I could be getting more mileage out of my right foot.


liberty vintage motorcycles An Etsy portrait. Thanks, Danny.

Tequila Sleeve

tequila the champs
Champs sleeve

Wolf-Stelzer Book Lamp

Book Lamp
My friend Tess just made the cover of ReadyMade with her cool lamp design.

Tree Stump Bug

Can this be for real? The design is so awesomely Thunderbirds. Via

The Nothing Box

nothing box


Thunderbirds are go
Are Go!

Command Center

command center
Sweet assemblage spaceship’s bridge.

Four Drano’s

Watch the sink slowly, all but disappear from the design .

Toothpaste Aerosol

toothpaste aerosol
Aerosol toothpaste

EFI Conversion Parts Stash

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Here it is. Weeks of reckless ebay bidding has pretty much brought me an entire electronic fuel injection and spark control sytem. Now all I have to do is stitch it all together. In addition to the stuff pictured above I also have some steel fuel line, and miscelaneous wiring and connectors that I will use to build the engine wiring harness.

Hand carved auto parts

The 325 throttle body that I am using, unfortunately doesn’t share a bolt pattern with the 318i intake manifold, so I thought that I’d make this adapter plate:


Easier said than done.


Coop once told me that the parts of which to be most proud are the ones that you make yourself.

I couldn’t agree more, but when Tom made this CNC machined throttle body adapter based on my prototype, and sent it to me gratis, I just had to swallow my pride and bolt that sucker up. After all, it does show a little bit, and well, Geez, how could I not use it.


3 hours and a jigsaw

There was quite a bit of bolt pattern “overlap” between the 2 throttles, so to avoid a collision of fasteners, I had to rotate the new throttle body by about 15 degrees. This resulted in a very strange looking adapter plate. Add to that, the fact that I have no skills as a machinist, and no mill or lathe, and you end up with one nasty looking hand-carved hobo piece. Hey, it works.


Some pro parts

Well, making that adapter nearly broke my spirit. To recover, I decided to treat myself to a couple of professionally machined parts. Tom Rafalski is a helpfull fella’ who recently started selling parts specifically for the 2002 tinkerer through his website 02Again.com. Tom makes a slick little distrubutor plug that will fill the hole left behind once I remove the distributor and install the Ford EDIS (Electronic Distributorless Ignition System). My plan is to do ignition first, then fuel.

I also hit up 02Again for one of Tom’s fuel pump block-off plates. I will need this when I convert the fuel sytem to a high pressure sytem as is required by EFI. I also see one of these in my future.


The 325is throttle body came with a 2-position throttle switch that would only indicate Wide-open throttle, or fully-closed throttle. Megasquirt does its acceleration enrichment calculations based on how fast you are depressing the pedal, so I needed to use a variable resistor (potentiometer) type TPS. I made this simple adapter plate to fit the brown mystery TPS to the throttle body before bolting it up to the manifold.

Next up: Installing the Megasquirt ECU, relay board, trigger wheel, and EDIS ignition.

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18 Responses to “EFI Conversion Parts Stash”

  1. Paul Says:

    I think you’re being too hard on your homemade adaptor plate. It looks great in the pictures!

  2. COOP Says:

    The parts you make yourself are always the stuff of which to be proudest.

  3. Scot Says:

    I hand fabricate a lot of gun parts, and especially enjoy going the extra mile on hand finishing. An old-time machinest taught me to cut em oversized and spend a lot of quality time with files and succesively finer grits of sand paper. Once you get hooked on nicely finished metal, the process becomes enjoyable in and of itself. Makes my back hurt like hell bending over a vice for hours at a time though.

  4. Metal Cutter Says:

    Scot is correct about using a file for finish cuting the metal plate cut outs. However for the initial rough cut I would suggest not useing a saw at all.

    Simply mark or trace your outline (actual size) and use a drill press to go around the outside of the outline drilling over lapping holes one after the other all the way round. Then use your file to cut off the teeth like bits left around the outline. It goes faster than you would think and your finished piece will look great.

  5. Scot Says:

    Great point. My Dad uses that method even for roughing out gunstocks in wood, as he doesn’t have a large band saw. I’ve used it to make a Mauser barrell wrench too, that fits tight all around the receiver. An excellent method for avoiding all that saw work, or when working with a material too hard to saw.

  6. bob Says:

    surge tank! don’t forget the surge tank! (or a baffled oem tank, like for the fi’d 2002′s, which is hella rare).

  7. Steve Says:

    Bob – Thanks. I almost forgot the surge tank.


  8. bob Says:

    no problemo! watching this unfold has been great so far. keep it up! i’m really interested in doing this w/ an oldsmobile v8 at some point.

  9. Steve Says:

    Yeah, — Sorry that it is kind of slow going, I dont have that much time to work on it. I’ve got the crank trigger wheel mounted, and I’m about to install the EDIS and computer.


  10. Jonathan Says:

    what year throttle body are you going to use?

  11. Steve Says:

    Jonathan, I can’t remember, It’s 58mm from a E30 325is


  12. Clay Says:

    This project looks great. I was previously afraid of messing with non-stock engine management electronics voodoo, but I’m leaning toward the possibility of entering the electronic priesthood now.

    Questions: What year/model Ford did you pirate the throttle position sensor and EDIS stuff?

  13. Steve Says:

    Clay –

    I’m not exactly sure of the year, but you can buy the whole set of parts from Boost Engineering. Better yet, look on Ebay. You should be able to get the module, trigger wheel, plug wires, connectors, VR sensor, and coil pack for under $100 as a “kit”. Just search for EDIS.

    I got the TPS from a guy Dale wilch for $10.


  14. Dave Says:

    The E30 325is was made between between 1987-1991. All 325i’s and 325is’s had the same Throttle Body. Hope this helps.

  15. Dave Says:

    I forgot to add that these were 2.5L motors.
    The ’86 & ’87 325′s had the 2.7L motor.

  16. Chris Says:

    Steve -

    Great project! I appreciate you sharing your experience. I too am gathering parts to covert my 71 ’02 to EFI. Could you tell me if you’re using the 318i fuel rail and injectors? I’ve searched your site and did not stumble across it.


  17. federico Says:

    Steve where do you bought the thooted wheel for the edis sensor?

  18. Peter Says:

    Hi Steve,
    I stumbled on your (very impressive) blog, googling “electronic fuel injection”
    What do you think, how difficult would it be to convert a two stroke outboard to direct injection?