From:Douglad Feinsod e-mail:jrawlsky@cruzio.com
Subject:RE: RE: Photo 3 Date:Sun Mar 23 09:53:54 2014
Response to:5090
I believe 21 cylinders have small intake,same as 20 but
larger exhaust port and no pipe plug in the top of the
cylinder.
That makes these one year as in 1920.




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Hey, Dave Ciccalone, check out that early deluxe top end
with K model style finning on the barrels but with the
larger port openings. I have seen a couple of sets of that
style cylinder ( Jeff T. has one stray of that style)real
rare. Check out the total K umbrella style tappet bonnets.
The motor also has the early style shift detent mechanism
and the crankshaft is the non beefed up counterweight crank
that came in the K model- that could be random though. I bet
we are looking at a transition motor with that four digit #.

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Photo 3