May 7, 2006

There are lots of bits and pieces that need to be done now on the engine. It’s mostly wiring related, but there are some mechanical things too. I continued securing the wiring harnesses where I could with the Adel clamps I have. I ordered a whole load of them today, so I can wrap all this up.

Here I’ve secured both the front cylinder ignition leads. I couldn’t do the rear cylinders - no Adel clamps the right size! Aaaaargh!

Here I have secured the left hand FADEC harness and the starter motor cable.

I finalised the connection to the FADEC wide open throttle (WOT) switch. This switch detects wide open throttle and tells th FADEC computer that we want full power. It uses knife connectors, so I put heat shrink on there to insulate them properly.

Another odd job on the list is the engine ground straps. There are two for redundancy (for the FADEC). One this side, and one on the other. I fitted both of them today, and checked the ground continuity between the engine and the airframe.

Once I’d figured out the EGT/CHT harness, I could go ahead and drill the exhaust for the EGT probes. I rough trimmed the band clamps, I’ll clean up the ends later when I remove the exhaust to refit the tailpipe.

I routed the fuel injector wiring on the left side cylinders and fitted the injector solenoids to the injectors. In case you’re not familiar with a FADEC system, it has true sequential fuel injection, with timing and duration controlled by the ECU’s.

The left side is almost completely done! I think I only need to do the ignition wires now. Sweet!

Last thing on the left….. Manifold pressure and temperature senders.