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Three Port 1921

Old Marine Engine » One and Two Cylinder Gas Inboards » Three Port 1921 « Previous Next »

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richarddurgee
Senior Member
Username: richarddurgee

Post Number: 4106
Registered: 11-2001
Posted on Monday, February 12, 2018 - 10:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)
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Three Port 1921

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jim_parrott
Senior Member
Username: jim_parrott

Post Number: 174
Registered: 06-2009
Posted on Thursday, February 15, 2018 - 08:49 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)
That's a great explanation for guys wanting to know how three ports work. Just remember you cant see all three ports from the top side of the piston. The third port can usually be seen from the intake opening in the cylinder.

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