Reply To: Bleed hole above reed block

[Buccaneer]

frankr wrote:

Can’t say about the Neptune, but such a hole is commonly used to supply manifold vacuum to the upper bearing. The vacuum sucks crankcase fuel/oil up into the bearing.

Frank, thanks for the interesting thought. If I drilled thru the bushing
thru the pilot hole in the crankcase, it would only be an 1/8″ up
from the bottom of the bushing, but perhaps that’s all that would
be needed to get oil into the bushing, which is close to 1-1/2″ long.
If the old bushing was installed wrong, or never drilled, that might explain
why it was “wore out”.

Prepare to be boarded!