Plans: 1. Fix the oil pressure sender. Status: 75% complete. Correcting the problem is a little complicated. The heat damaged sensor also had heat damaged wires. The source of the heat (sufficient to melt the wires inside the fire sleeve) could have come from two sources. The first being radiated heat from the header. That seemed odd since the header was wrapped with thermal tape. Nevertheless I can't say that the under hood temps were so low it would not happen. The other source I suspect is from gas venting from the loose muffler coupling. Recall that it is intentionally loose to decouple it from the header on the advice of Aeromomentum. In that case the gas may be venting directly on the sensor and wires at a high temperature. Whatever the source I decided to both insulate the wires better and shield the components. Replacing the sensor led to replacing the temp sensor as well. The wires had been melted together. So today we replaced both sensors and added new connectors. The wires were run through both fire sleeve and DSI high temperature sleeving. A heat shield was created to protect and conduct the heat away from the sensor. The shield was also lined with thermal tape bonded to the inner surface with extreme heat JB Weld. Another shield to protect from heat from above is next then reassembly. 2. Plug the hole in the propeller hub. Status: Complete. A 2.25" plastic plug was purchased to plug the hole. It looks very clean now and will protect the interior from debris.
