jgross
DR-107 (formerly jimrgross)
- Joined
- Apr 28, 2012
- Messages
- 122
- Reaction score
- 3
Gentlemen here is the dilemma.
I was told when I purchased this aircraft that it was an O-320 with fuel injection and high compression pistons to make it 160hp. I have gone through the logbook and read and deciphered all the entries. This engine no longer has a data plate so I don't have that to go by.
The title page shows an O-320-B3B. The engine was overhauled twice and went from constant speed prop to fixed in it's history. Now fixed so essentially it should be a B2B. Here is the kicker. A B3B and the B2B are listed as a high compression,wide cylinder flange model with no plates on the cylinder studs, my engine has the cylinder plates which tells me it is a standard cylinder hence not a high compression engine but the 150hp model. The logbook has no entries for cylinders being changed just overhauled.
Frankly I think I have been swindled. Either the logbook is not for my engine or somebody put standard cylinders on this engine and never recorded it. If that was the case wouldn't the studs be different? I don't think that could be done. The engine logbook shows the original engine being from 1957. Could it still be a high compression engine with standard cylinders?
How can I determine just what engine I have?
Any advise would be appreciated because I may have to replace the cylinders and I really would like to be knowledgeable about what I have.
I was told when I purchased this aircraft that it was an O-320 with fuel injection and high compression pistons to make it 160hp. I have gone through the logbook and read and deciphered all the entries. This engine no longer has a data plate so I don't have that to go by.
The title page shows an O-320-B3B. The engine was overhauled twice and went from constant speed prop to fixed in it's history. Now fixed so essentially it should be a B2B. Here is the kicker. A B3B and the B2B are listed as a high compression,wide cylinder flange model with no plates on the cylinder studs, my engine has the cylinder plates which tells me it is a standard cylinder hence not a high compression engine but the 150hp model. The logbook has no entries for cylinders being changed just overhauled.
Frankly I think I have been swindled. Either the logbook is not for my engine or somebody put standard cylinders on this engine and never recorded it. If that was the case wouldn't the studs be different? I don't think that could be done. The engine logbook shows the original engine being from 1957. Could it still be a high compression engine with standard cylinders?
How can I determine just what engine I have?
Any advise would be appreciated because I may have to replace the cylinders and I really would like to be knowledgeable about what I have.
