Superior Design= Superior Performance

Phone 403-671-4015

Last update Aug. 22/21

Continental 4 Cylinder Engines

We have done a number of smaller Conti engines, the first back in 1996. Mark Snow was an early SDS user on his C-85 powered Dragonfly, accumulating over 750 hours. Justin Mace had 350 hours on his SDS equipped, O-200 powered Dragonfly.

Fuel and spark control kit for O-200. Wiring harnesses, fasteners and plug wires not shown. $4543US for single ECU system with no options.

See the article in the June 2018 Kitplanes magazine on our O-200 system

SDS EFI on a C-85 Powered Ercoupe

Bert Caron did an SDS EFI installation on an O-200. With some fin mods, he was able to fit the Lycoming style injector bosses into the Continental heads.

Mar. 15/17. We acquired an O-200 for jigging and development purposes. This was used to design some new CNC'd parts to make the installation easier on these engines which resulted in our new EFI kit shown above.

Working on prototype Hall sensor mount

Machined up some engine mount hardware to mount the engine on the test stand

Prototype Hall sensor mount fabbed up

Coils mounted in old mag position

CHT sensor mount for starting and warmup

Engine mounted up on test stand

Engine with sump, plugs, fuel pump, starter installed and engine stand support arms fabbed. BMW is used for dead weight to keep the assembly from running away.

New CNC'd bits

Coil pack mounted up to left mag position

Injector mounted to induction elbow

Throttle body in place

Hall sensor bracket

Plug wires and throttle linkage installed

Both coil packs installed with plug wires

Fuel block for O-200

Engine all hooked up on test stand

Fuel block

Rear view

Injector detail

First run

750rpm idle

Running video:

Startup and running to 1800 rpm.

WOT testing to 2400 rpm

How to mount injector bosses on intake tubes


Les Smoot's J-3 Kitten powered by 84 cubic inch 4A084 GPU engine fitted with EM-4 4D fuel injection system

Jim Jernigan's SDS Installation on his 4A084 powered SkyRaider 1

Crank sensor mount detail

Some of Jim's comments:
"The results were: easy starting, winter and summer, smooth, slow idle, 20% gain in maximum static thrust and consistent, rock solid performance in every aspect of engine operation. These were previously unattainable with my stock, icing prone carburetor and magneto."

Dual Hall sensor mount detail on Conti O-240 (Dave Magaw)

O-200 Installation manual