Wisconsin, Model M RBM Connecting Rod Lubrication

[Buccaneer]

The subject motor I’m working on was partially disassembled when
I got it. The piston and rod were "out", and the rod may have been
previously removed from the piston, as the cotter key thru the piston
and wrist pin had been removed.
What I’m wondering is, what would be the correct orientation of the
two oil holes in the connecting rod, "UP, or DOWN"???
In case there’s no actual data for this particular motor, what’s
the "norm" in general you’ve seen, or your best "theory" regarding
your "UP or DOWN", where connecting rods are operated horizontal?
Thanks!

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Prepare to be boarded!

[kees]

.
always UP
and the oil can work its way down for correct lubrication
.

[frankr]

Agreed. Think gravity.

[Buccaneer]

Thanks, That was my thought as well, but I didn’t want
to sway the jury in reaching a verdict! If I would have put
the rod back on the piston like it was, and installed the piston
in the cylinder with the "step" on the carb side, the oil holes would have been
"Down", but it may have been apart a few times in the last 100
years!

Rod journal was not perfect, but at least "round".
Way too much slop in the rod to crank fit, but
I ground down the cap and rod mating surfaces
a little, and seems satisfactory now.

Still wondering what to do about the missing Elkhart magneto,
so if anyone has suggestions, much appreciated.

Prepare to be boarded!

[Author]

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