In my old autoshop class, (a lot of years ago - highschool) we ran a test on
an old 350. Advanced the timing and detonation appeared. Overly retarded
the timing and detonation appeared.
Retarding the timing moves the heat to the outside of the combustion chamber
(exhaust manifolds) which helps clean up the emissions (unburnt fuel)...but
can leave "hot spots" near the edge of the combustion chamber causing
preignition. Advancing the timing does just the opposite with the heat
factor, but as we all know, causes detonation. Both sound almost alike.
- Bernd
-----Original Message-----
From: owner-dakota-truck@buffnet.net
[mailto:owner-dakota-truck@buffnet.net]On Behalf Of Mike Schwall
Sent: Monday, January 24, 2000 10:03 PM
To: dakota-truck@buffnet.net
Subject: RE: DML: Ping Report - Updated
At 08:36 PM 1/24/2000 -0600, you wrote:
>The same can happen if you retard the timing too much.
>
>- Bernd
Explain that one. That's a new one on me. Advancing the timing will cause
pinging, but never heard of retarding the timing will cause ping. It would
run like crap if it's retarded too much. It would shake like it's lost a
couple cylinders.
Mike
__________________________
mschwall@flash.net
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