[Fot] Seating Rings

[Tim Murphy]

Wow, the FOT is fantastic.  I'd never have thought of Marvel Mystery oil.
Just curious, what kind of piston rings are there other than the cast iron
ones and where are they used?

Tim Murphy
1961 TR4 #317

-----Original Message-----
From: fot-bounces at autox.team.net [mailto:fot-bounces at autox.team.net] On
Behalf Of marty sukey
Sent: Saturday, April 23, 2011 12:36 PM
To: FOT
Subject: [Fot] Seating Rings

As I get ready to start putting the Spity engine back together I have a
question.  Piston rings are the cast iron variety. In the past I have just
coated the pistons and cylinder walls with some engine oil prior to
insertion.
I was talking to an old timer at the machine shop and he said he uses 90 wt
gear oil on the cylinder walls and leaves the pistons dry.  What do you
experts use? Does it make any difference? I do want the rings to seat and I
was thinking thinner was better but maybe I am wrong.  What say ye?

Marty
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