[Admin note - Bounced, non-member submission. Terry, you need to
correct your address as entered in your email "preferences".
Thanks, Patrick]
It has nothing to do with the valves. It is usually detonation, ie.,
premature igintion of the fuel/air mixture and rapid, explosive
detonation rather than a controlled burn. You can do a number of things
to control it. The easiest is to use cooler burning fuel as in higher
octane rating. These fuels contain less energy and burn slower. You
can also retard ignition, cool the intake charge, lower compression or
change fuel mixture. Newer engines do all this all the time.
T. Wallace
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> Is this valve chatter or is it engine knock?
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> Emery Stora
