rv9av8tr
Well Known Member
Today pulled the EGT probes on my -9A and discovered the nature of the failures that occurred at the start of my cross country trip 2 wks ago.
These probes are the standard EGT probes provided by Grand Rapids Technology with their engine analyzer system.
Service to date:
252 hrs in service (3 yrs)
Mounted 2" from cylinder flange
Fuel: 100LL w/ Alcor TCP treatment
EGT's rarely read over 1400 Deg.
Local flying is ~50% power ROP
Cruise flying is ~60% power LOP
Whatever materials these are made of is not OK.
I ran ECI International System EGT probes in my Long-EZ for 22 yrs and never had a probe failure.
Needless to say, they don't make them like they use to! I'd suggest pulling 1 or 2 probes at annuals to verify they are OK.