Oh Gosh !!
John you said a mile above sea level, not at sea level. Of course it's
lower. I need to get glasses.
Jim
----- Original Message -----
From: "James Franks" <jimmble@adelphia.net>
To: "Lumia, John" <jlumia@ball.com>
Cc: "Six pack" <6pack@autox.team.net>
Sent: Tuesday, April 30, 2002 6:51 PM
Subject: Re: Low compression
> John,
>
> Although the compression values are on the low side, I would put
sooner
> expect your idle problem to be related to carbs, ignition or
distributor
> before bad rings or valves.
>
> Did you inject a teaspoon of oil in each cylinder after the 'dry' test
> to see if the valves are the culprit? Maybe all you need is a top
> overhaul. A total rebuild may be (IMHO) unnecessary if you have good
> oil pressure, good crank endfloat, and it's running smooth and cool
> without knocks or rattles.
>
> If it ain't broke........ drive it!
>
> BTW, why would you expect lower compression with a denser atmosphere
at
> sea level than at a higher elevation? I would expect the opposite. No
> flame intended, just curious.
>
> Good Luck, Jim
>
> ----- Original Message -----
> From: "Lumia, John" <jlumia@ball.com>
> To: <6pack@autox.team.net>; "'triumphs'" <triumphs@autox.team.net>
> Sent: Monday, April 29, 2002 11:52 AM
> Subject: Low compression
>
>
> > I recently measured engine compression in my 6 and found cylinder
> > pressures ranging from 75 to 110 (note that I'm a mile above sea
> level,
> > so I would expect pressures to be somewhat lower anyway). I have
very
> > good oil pressure (25 lbs at hot idle, 65-75 when hot), but the
engine
> > is a bit uneven at idle, maybe plus or minus 100 RPM, which it has
> done
> > since I bought it 4000 miles ago. Ideally I would like to continue
to
> > drive the car this summer and tear down in the fall or winter. Does
> > anyone have an opinion if I will risk further damage to this engine
if
> I
> > continue to drive it till then?
> >
> > John Lumia
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