Re: k321 overhaul-now i am confused

Posted by george md on October 20, 2007 at 18:23:34 from (12.177.53.179):

In Reply to: k321 overhaul-now i am confused posted by larryinwa on October 20, 2007 at 16:29:47:

Larry,

Mic the bore , if it is out of limits,
bore it and hone to size and proper finish.As
far as hones are concerned , my guess is that he
is talking about the cheap spring loaded type
and he is quite right , they are junk. They do
not do anything to true the shape of the
cylinder , they will not correct an out of
round condition or a tapered cylinder. All they
do is follow the contour of the worn cyl and
maintain those faults. Use an adjustable hone
and it will correct both out of round and taper.

As a machine shop and engine rebuilder I have
done many things from too small to get a boring
bar in to D-8 cats and a few things with bores
larger than a D-8 .I have hone extensions to
do up to 15 inch bore.Also have boring bars that
go to at least 8" and if that is not enough , I
have a horizontal boring mill that will
probably do 36" .

Last thought , if it is out of specs , don't
try to get by with a hone and ring job as it
will come back to haunt you.

george

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