Originally Posted by
mr_matt
Just a guess Nick, uneven fuel atomization. Maybe a broken needle.
If a lot of liquid state fuel gets into the turbine during operation, the swirl seems to kick the "liquid fuel" hotspot up to maybe 4-5 o'clock position, looking at the rear. I have rarely seen the bottom (true 6 o'clock) of the nozzle get that hot. My money is broken needle or some sort of leak in the fuel manifold.
Mr. Matt! Glad to hear from you again; it has been a while. Hope you are well.
I appreciate your feedback. Makes sense about a broken needle or some sort of leak in the fuel ring to get a hot spot like that. I had just never saw that on any turbine over the many years.
Probably time to retire it! This was the turbine Bob gave me to replace my new P-160 when it "came apart" at Winamac in 2005.... NGV / turbine wheel clearance issues with the new P-160's back then...
Thanks
Nick