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Update November 11, 2007 this unidentified Gray Marine engine
was sold at auction.
Update October 05, 2007 I enlisted the 14 year old eyes of
Eric McConnon to help me. Above far left picture: Engine number B0263.
Either that is an oh or a zero between the B and the 2. There was an epoxy like substance covering
this number that scraped off easily with a putty knife. Above left: My pictures did not show it and my memory falsely
told me the distributor was on an engine boss. It is not. The distributor is an Auto-Lite. [It is displayed
like this with a hyphen between the two words.] 1GW4113 12 T. The distributor is driven off
the back of the gear driven Auto-Lite generator GAL 4336 Toledo Ohio USA. You will note in
the above left and above right pictures behind the Delco-Remy coil the words Gray Marine cast into
the starboard side of the block. Picture above far right: we took the coil off to make it clearer. Besides driving
the distributor from the back of the generator this drive shaft continues to also drive the
M.L.Oberdorfer Brass, Syracuse NY, water pump.
Also the freeze plugs visible in above pictures have HUBBARD imprinted around the perimeter and a logo
like a C on the inside of a V.
Below far left and left: lifting eye on the prop end of the engine. 118 clearly visible. Before that
may be an H, an 8, a B, or something else entirely. Below right: FIRING ORDER
cast into the head. Below far right: firing order 153624 mostly hidden by a bracket.
Below far left: in the center of the head is this area that looks like an oval indented space was cast into the head
then this oval metal piece with K 7 X held in place by two flat head machine screws.
Below left: what I think is a tachometer drive? At the top of the picture another view of the
K 7 X oval plate.
Below right: on the aft port side of the head
M We believe the 1 designates number one cylinder.
Above far right: aft port side of block:
K 18 X. Below that A600A414 To the left, where the yellow shows, the four rivets made us
think we had found some kind of plate, but there is not. The numbers 4224 were struck, versus cast, into
the block in this space. In several places what we took to be cast in place numbers actually was heavy scale that
scraped off with a putty knife.
September 29, 2007 we were donated this gasoline Gray Marine engine. I am hoping someone will be able to
identify the year this 6-91 engine was built and who built the base engine? As well as any records as to its history.
There are numerous letters and number groupings cast into both sides of the block and atop the flat head.
Below far left picture: Yes. The head is cracked, the engine is frozen, too. But with only one exception all the
cast markings are blocked by accessories or steel accessory brackets. The one unobstructed view -- above right picture:
to the right and below the tappet clearance plate -- did not photograph clearly with and without flash.
Above right picture: September 29th one of our age mid 80’s members with Macular Degeneration read Olean on this oil pan
access cover. September 30th one of our age 14 members also read it Olean. It says clean out.
The numbers cast in the port side of the head alongside the spark plugs. Are they the cylinder numbers?
Below right picture: The reason I ask # 1 is closest to the prop shaft, what I think of as the aft end of the engine?
Below left name plate closeup picture: Since I could clearly read the engine number in my viewfinder I did not write it down.
But now I cannot make out what the first digit is after the B, and, of course I cannot remember. The other three, 263,
are clearly visible.
Monday October 1, 2007 I went back over to our Museum and looked at this S/N again. The Bspace263
REALLY stands out, and must have been what I saw in my viewfinder. There is a letter size space between the B and 263.
That space MAY have a MUCH lighter struck O or U or C, or it may just be corrosion?
Both of these new donations were hauled in by Virgil White. Our new Fairbanks Morse -- above, by
the serial number 394030, a 1919 Type Y, 15 HP, Style H, 400 RPM. Top left photo that is Dan Jaques on the left,
Eric McConnon on the right. Below our new Holt 5 ton. We do not yet know what
year it was built, but, obviously, before 1925. Virgil and Paul Smith found they were presented with a new set of
controls neither were familiar with. But they figured it out. Both of these items were donated by Volunteer Member
Tim Rice of Palmdale, CA Tim has
donated several crawlers in the past, and, Virgil told me that Tim will donate a few more crawlers in the next
couple of years.

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