Subject: PURPUSE OF PLUGS
From: rotaryeng
Date: 4/4/2012, 5:40 AM
To: AAAA Put this in the To box 


 HI PAUL ,WHAT DIFFERENCE PURPUSE OF PLUGS HOUSING OF UPPER(T) AND
 LOWER(L) HOLE. HOW THE FUNCTION,AND WORK.CAN WE MADE THE UPPER(L)
  AND LOWER(L) HOLE SAME SIDE.

 vins LEE

 I am not sure what the question is. Mazda put two plugs in because
 it reduced emissions. Do not change the holes. The upper hole is
 smaller as it reduces leaks around the passing apex seal to the
 following chamber.

 Paul Lamar


  If you drill the trailing plug hole to the same size as the leading, you
will ruin the engine with pre ignition. Similar result as detonation.

Dale Davies


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