FYI:
This happens to be a very good article that should clear up any misconceptions:
http://www.streetrodstuff.com/Articles/Engine/Detonation/
A snip from the article:
"Confusion and a lot of questions exist as to detonation and pre-ignition.
Sometimes you hear mistaken terms like "pre-detonation". Detonation is one
phenomenon that is abnormal combustion. Pre-ignition is another phenomenon
that is abnormal combustion. The two, as we will talk about, are somewhat
related but are two distinctly different phenomenon and can induce
distinctly different failure modes."
It's 8 pages long, so plan accordingly. Good reading to the end.
Gary
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