Knock Detection

[Frederic Breitwieser]

>>Huh?  There is no unburned fuel near the spark plug when the knock occurs.
>>The plug has already ignited it and the flame front is some distance away.
>
>There is if the knock occurs BEFORE the spark fires - preignition.

Yes, and that's why trimming the plug threads down would be a good thing.
Detonation occurs of hot spots and sharp edges... remove the sharp edges at
least help alleviate the condition.


Frederic Breitwieser
Homebrew Automotive Mailing List
Bridgeport, CT 06606
http://www.geocities.com/MotorCity/Downs/4605/index.html
1989 AG Hummer 4-Door
1993 Supercharged Lincoln Continental
2000 Mid-Engine Sports Car <smile>

Seeking Info on: GM Tubular Upper and Lower A-Arms





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