Quote:
Originally Posted by big block fiero
...take the example of the summander sigh grooves popular science article.
The groove in the quench area shoots a velocity at the spark plug as it fires.
More precombustion vaporization occurs at the plug and the fasination is
that he reports a notable gain if the quish clearance is increased ( less
chamber turbulence!) and the engine has a notable increase in lower
speed operation with no loss in high speed operation... |
I have modified more than forty engines with different variations of grooved
squish pads much like you describe. To date, the most impressive example
was Glenn Elliser’s SBF Mustang. Cutting one groove in the squish area
pointing at the plug combined with opening of the squish clearance eliminated
a starting line detonation problem and brought of new found performance. The
result was so much of an increase of power that a rear end gear change was
required to control the car at launch.
