Just wondering. Can any body explain ( that really knows) why the timing on the C-85, C-90, and O-300 series engines are 2 degrees apart
while the A65 series and O-200 are the same? Don't know of any other Continental or Lycoming that are offset timed.
Cylinder head design is basically the same on all the small Continentals.
A-65 = 30 degrees BTC both mags
O-200 = 24 or 28 degrees BTC both mags depending on whether early or late cylinders.
C-85 = left mag = 30 degrees BTC right mag = 28 degrees BTC
C-90 and
O-300 Left mag =28 degrees BTC right mag = 26 degrees BTC
(but the early cylinders can be used on the C85, C90, O300 with out retarded timing.) Kind of odd.
while the A65 series and O-200 are the same? Don't know of any other Continental or Lycoming that are offset timed.
Cylinder head design is basically the same on all the small Continentals.
A-65 = 30 degrees BTC both mags
O-200 = 24 or 28 degrees BTC both mags depending on whether early or late cylinders.
C-85 = left mag = 30 degrees BTC right mag = 28 degrees BTC
C-90 and
O-300 Left mag =28 degrees BTC right mag = 26 degrees BTC
(but the early cylinders can be used on the C85, C90, O300 with out retarded timing.) Kind of odd.
