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Re: Engine evaluation=> refresh vs rebuild

To: Nick Moseley <nmoseley@dccnet.com>, spitfires@autox.team.net,
Subject: Re: Engine evaluation=> refresh vs rebuild
From: Doug Braun <doug@dougbraun.com>
Date: Wed, 15 Mar 2006 11:34:27 -0800 (PST)
If you can crank it with the starter in its current
state, you could at least measure the compression.
(which might be a bit low if the rings are not yet
seated).

You can also see how stiffly it turns over.   If
it has freshly-honed cylinder walls and new rings,
it should be rather stiff.

(Go watch the movie "The Gods Must be Crazy" for
an amusing situation about such an engine).

But personally, I would just install it and run it to
see if it was OK.

Also, I don't think .009" is an big issue with
crank end play.  A few years ago, I measured my
endplay at 0.012 or so, and horrified, I
installed new thrust washers.  But I found that
the replacements were only .001" or so thicker than
the originals, so the job was mostly for nothing.

Doug Braun
'72 Spit


--- Nick Moseley <nmoseley@dccnet.com> wrote:

> So how do I evaluate it short of installing it?
> So far, I've assessed the crank end play, to find it
> needs attention to the
> thrust washers (.0096 play). 


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