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From: Walter Atkinson <walter@advancedpilot.com>
Subject: Re: [LML] Re: 360 temperature question?
X-Original-Date: Mon, 2 May 2005 16:46:56 -0500
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Dan is absolutely correct.  This is one reason TCM has designed the 
taper-finned cylinders.  The fins are smaller as they get further from 
the head.  It helps keep the cylinder a cylinder and not some other 
shape!

I also like his answer about finding another wrench...   <g>

Walter


On May 2, 2005, at 4:21 PM, Dan Schaefer wrote:

Gene Underland wrote:

"The IA he is working with recomends he take the choke out of the
cylinders."

Your friend best get a new wrench (IA). Sounds like this IA is setting 
him
up for needing his cylinders topped in a fairly short time - probably 
at the
next annual when he's informed that the compression(s) are too low.

The choke is in there so that, at operating CHT's, when the upper 
portion of
the cylinder expands slightly, the walls are parallel. Take out the 
choke
and the upper part of the cylinder will be larger than the rest of the 
bore
when hot. Not a good thing.

If choke was unnecessary, the manufacturers wouldn't bother - it would
certainly be easier to machine the jugs without it.

Dan Schaefer



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