"Farm Boy" Engine Revisions Page
Plan sets up to and including SN-25
Sheet #6 - The upper part of the Valve Cages is too long.
The .440" dimension should be .400" to allow proper valve
opening clearance under the Valve Spring Keepers.
Sheet #8 - Drill and ream the rod big end .5625". Take care
that the wrist pin hole axis and the big end hole axis MUST
be perfectly parallel with each other or there will be binding
as the crankshaft rotates.
Plan sets up to and including SN-30
Sheet #10 - Cam Shaft (Top View) should read Ream .094" thru.
Sheet #12 - Governor Lever Catch Block (Face View) the
.155" dimension should be .200"
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