Mystery Machine

[davidk]

I got this rig in a pile of Martin parts and motors years ago.  These were said to be parts from a Martin dealer who went out of business (as most did).  What’s the purpose of this gizmo? Break in a new set of points?

[frankr]

Back in the very olden days, they used to “run in” a rebuilt engine.  Really doesn’t apply to a Martin, but who knows?

[davidk]

Is “run in” like “break in?”  Could this be used to break in a new set of rings?  Come to think of it, wouldn’t these pistons want to be oiled if this thing was going to run for a while?

[HARRY D. NICHOLSON]

Maybe to test used spark plugs.

 

[Mumbles]

Whatever it is, they didn’t want that powerhead turning over very fast. Maybe 400 RPM here?

Johnson used to spin their powerheads before shipping them out. A preliminary break-in done at the factory.  I’ve done it to, using the lathe while feeding the motor lots of fogging oil.

[Author]

Posts