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Marine Engine Valve Grinder

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richarddurgee
Senior Member
Username: richarddurgee

Post Number: 1415
Registered: 11-2001
Posted on Friday, February 09, 2007 - 02:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

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1929 Marine Valve Grinder


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johnny
Senior Member
Username: johnny

Post Number: 85
Registered: 03-2006
Posted on Friday, February 09, 2007 - 07:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Looks more like a electric valve laper then a grinder. How would you grind a valve with it?
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eric_schulz
Member
Username: eric_schulz

Post Number: 28
Registered: 01-2007


Posted on Friday, February 09, 2007 - 08:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

johnny, I know what you mean, but in the context of the day, we used to talk about grinding the valves. A laborious process with grinding paste and elbow grease to eliminate pits and distortion.
When valve facers and seat cutters came into common use, there was little or no lapping needed.
One would have to challenge the statement about "each valve being ground and lapped with uniform accuracy". This, of course can only be achieved with the methods we use today.
Advertisers have never let a few facts ruin a good story!

Eric
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richarddurgee
Senior Member
Username: richarddurgee

Post Number: 1417
Registered: 11-2001
Posted on Saturday, February 10, 2007 - 03:27 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

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Sioux 1922

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