If parts that don't quite fit are grinding you down, author Bob Fritz has a solution: Use a lathe to create a smooth finish on a precisely proportioned piece. While hes at it, hell demonstrate two ways to use the machines calipers to measure necessary offsets.
Owners of a certain type of Continental engine, the cam-at-the-bottom variety, are undoubtedly familiar with the annoying seepage of oil from swaged pushrod tubes and rubber pushrod seals. Now there's a cure, and author Ron Darcey describes the fix.