Re: BTDT: Bosch Platinum +4 Plugs

[John Graham <jgraham1@erols.com>]

John Heath wrote:

> Because of the potential for multiple, smaller sparks, the increased
> pressure resulting from a turbo can actually quench the spark.  Gap is also
> important, usually smaller than normal

There is no potential for multiple sparks. You only get one spark at a time.
More electrodes mean more of a chance of a spark. The electrode that fires
is the one with the smallest resistance at the gap. What makes the three
electrode
plugs work in a 20V engine is the flame pattern form the spark. It's pointed
at the top of the piston with shadow from the electrodes.

John
1990 CQ



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