Measure the bores in many different planes of the cylinder. Say for ex. the
top of bore, middle, and bottom of bore (should flare larger) in diameter.
Take many measurements at each plane and take averages.
Mike C
-----Original Message-----
>From: Lester Ewing <lewing@sport.rr.com>
>Sent: Feb 16, 2007 9:56 AM
>To: Spridgets List <spridgets@autox.team.net>, VSAAB Unmoderated List -
><vSAAB@yahoogroups.com>, David Prantl <david_prantl@hotmail.com>, Carlson Thor
><carlsont@ptdprolog.net>, Moss John <trionict7@yahoo.com>
>Subject: Machinist / measuring help
>
>Good morning all,
>
> I have a minor dilemma. I am trying to measure the bore of one of
>my 2 stroke engines (Bullnose) and I have several measuring tools but
>I don't know the "trick". That is to say that I have telescoping
>guages, internal micrometer, calipers, and micrometers but in all of
>that I can't figure out how to insure that the internal mic is in the
>proper plane for measuring the cylinder bore. As this tool, and the
>telescoping guages too, can be horizontally and vertically from an
>ideal plane (which would give max and correct diameter) I don't get
>the measurements correct. I know this because according to my
>measurements the pistons should not fit in the cylinders yet they do..
>
>.. so how does one really measure the cylinder bore?
>
>Thanks all,
>
>Lester
>
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