Plans: 1. Check the agreement of the instrument panel gauges with the ECU readouts. Status: Complete. Today’s test went well in that I now know the difference between what the engine is seeing and the instrument display. As expected they are different but close. The most interesting thing is that the panel display shows much higher temperatures than truth at lower ECU indications. They begin to agree at higher temps. For example 210 on the panel was 180 degrees from the ECU. 213 on the panel was 200 on the ECU. Then about 215 on the panel was 205 on the ECU. At idle sitting still 205 degrees ECU looked to be fairly stable. The oil temp lagged behind and reached around 190 degrees. So it would appear that I am best served by monitoring the oil gauge during start-up until the coolant reaches the 200 degree neighborhood. Also of note, the RPM gauge indicated a little higher than the ECU RPM by around 200. For test flights I think my iPad with the ECU outputs displayed will definitely be needed. I am still working that challenge.
The difference between the inlet and outlet of the radiator is 10 degrees (200-190). The 210 degree sticker mark was not blackened. Hence it is consistent with the ECU 205 degree reading.
