Here's a possible theory. Scenario 1(single electrode). The power required
from the coil equals V^2/R where R is the impedance of the plug.
Scenario 2(quad tip).
To me, if you provide four paths to ground then the impedance of the plug
becomes R/4 since said paths are in parallel. Substituting into above
formula you get Power=4*V^2/R or four times the power is required from the
coil.
http://www.the12volt.com/ohm/ohmslaw.asp
Discuss amongst yourselves.
Ken Lewis
86 Transporter Crew Cab
60 356 T-5 Porsche
http://neksiwel.20m.com/
Vanagon tech, pixs, O2 monitor gadget
----- Original Message -----
From: "Daniel L. Katz" <katzd54@YAHOO.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, June 12, 2004 3:31 AM
Subject: Re: [VANAGON] vanagon single electrode plugs

> the facts may not lie, but there might be another side of the story too.
> there really isn't any plausible mechanism for a certain spark plug type,
> per se, to cause a bad coil....