Tjtolton

I wish that were the case, but my JPI sensor is seated by the Mooney (Rochester 3080-38) probe and it doesn't come back into range after operating for a while.

Thanks for the comments. Did try making measurements at ice, room temperature, and boiling water. Go an idea of what to expect, but nothing precise enough to trust it. 32F 25.5K, 84F 7K, 212F 1.1K. Looking for published values. As far as using the professionals haven't found a shop yet that can check the calibration of the cluster guage. Any idea where I can get someone to calibrate my temperature sensor when it is coupled to my panel meter? I am located in Michigan. From the JPI is does appear the CHT #3 is hotter, just want to confirm what I suspect is true. Right now the factory CHT signal stays fixed aroung 250F with only a small amount of upscale deflection during flight. Factory CHT and JPI differ by 100F and yet are colocated at about the same point.

Trying to find the expected resistance versus temperature of my #3 CHT sensor. It is a Rochester 3080-38. Still trying to understand my elevated #3 CHT readings by comparing JPI sensor to installed Rochester 3080-38. Must first get Rochester sensor to indicate correctly on the panel meter.

Thank you one and for sharing your experiences. I have run in the past a gami prescribed test to determine the spread in fuel flow over which all the cylinders reach peak. It was a spread of about 0.7 gph. Three of the four cylinders reached peak at the same fuel flow. The hot running No. 3 was part of the population of three with the same fuel flow. Only the pilot side fore cylinder ran richer than others peaking last. I have not had a chance to look at each particular CHT probe connected to our EDM-700. We have made a first attempt at sealing any air leaks around the interface with the upper cowling then confirmed that light could not be seen when looking through the oil filler access door. This attempt for a better seal was done before our latest data set that I attached was collected.