I asked my mechanic to scope no. 1 since the compression was 60, expecting to find a valve issue. Instead he saw lots of scoring on the cylinder wall. Deep grooves. He said the cylinder wall looked shinier than it should and that it must be chromed. He also saw hone-marks and speculated that someone might have run a hone through a chromed cylinder-not good. He thinks the scoring is from bits of chrome that have come off. #3 had scoring too.
The engine has no documentation other than it was built up "from components by the builder" of the aircraft (RV-6A). The engine and airframe have about 420 hours. Compression dropped from the 70's to 60 on number 1 at about 300 hours. I have not checked the oil screen but that is next.
I am new to the experimental world. Questions:
-Can I install new jugs myself? I am not the builder of the aircraft.
-Are there certificated jugs vs. experimental? Difference in price?
-Recommend a good source?
Thanks,
Dave
RV-6A
The engine has no documentation other than it was built up "from components by the builder" of the aircraft (RV-6A). The engine and airframe have about 420 hours. Compression dropped from the 70's to 60 on number 1 at about 300 hours. I have not checked the oil screen but that is next.
I am new to the experimental world. Questions:
-Can I install new jugs myself? I am not the builder of the aircraft.
-Are there certificated jugs vs. experimental? Difference in price?
-Recommend a good source?
Thanks,
Dave
RV-6A