Lycoming EC3

Want to use the EC2 on your Lycoming or Continental engine? Lynn French (one of our customers) was kind enough to send the following details and photos about his installation so you can see exactly how it is accomplished.

Attached are some pictures of the injector bosses and intake runners. The bosses were purchased off the net as an off the shelf item. The intake runners are standard aluminum tubing the same diameter as the existing intake runners and the hole is manufactured into the tubing to accept the welded in bosses. Injectors were Bosch type injectors purchase through the parts store and sized for the engine. I have the part numbers for all the components used if anyone would have an interest in a particular part.

The sensor bracket probably consumed the most time since I did not have a good place to add a trigger wheel. The sensors and trigger wheel are an off the shelf item from Electromotive. A standard Continental O-200 engine does not have the alternator hub installed between the crank flange and prop extension hub as mine does. There for it would be easier to install this arrangement on a standard engine. However, I had to have the trigger wheel machined and attached to the alternator hub in a special configuration. I have been very happy with the installation. The fuel system was modified to accept a high pressure pump, fuel regulator, and fuel return line into the tank. Since my aircraft already had a header tank, the fuel return system was really not difficult. I know these few brief sentences do not explain very well the full extent of the work, but may help to give an idea of how I approached the conversion. For now the carburetor is still installed and "wet". It is available to be used at any time and is checked during run up. I expect it is costing some HP, but was one less thing to have to mess with and allowed me to more safely develop the system. The electronic ignition is a big boost at altitude and provides much smoother idle performance. The fuel injection balances out the mixtures between the cylinders much better than the carb does and therefore provides better performance on less fuel. I suppose I have put around 50 - 60 hours on the fuel injection system the past 6 months. The only changes in mind are the possible conversion of the other set of plugs to electronic and the software revisions to the ECU sometime this winter. Otherwise it is pretty much where I want it.

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Lycoming/Continental EC3 EFI Controller