[Shotimes] bosch platinum +4's

[Paul Nimz]

Actually the 1,2,&3 plugs fire + voltage and the 4,5,&6 fire - voltage,
everytime.  They do not switch back and forth.

Paul
  ----- Original Message -----
  From: Zach Leahy
  To: Kevin & Cheryl Airth
  Cc: SHO
  Sent: Thursday, April 07, 2005 9:20 AM
  Subject: Re: [Shotimes] bosch platinum +4's


  Yeah that's about how I thought it was.

  Z

  On Apr 7, 2005 8:24 AM, Kevin & Cheryl Airth <clubairth@peoplepc.com>
wrote:
  > Zach:
  > Ford calls it waste spark ignition. 2 cylinders fired every time. The
dead
  > cylinder has the spark jump from ground to the electrode. The cylinder
under
  > compression has the spark jump from the electrode to ground. The
  > conventional way. This is why the SHO needs the PP or double platinum
plugs.
  > Otherwise the waste spark cycle will cause short plug life from spark
plug
  > metal erosion on the dead cylinder. Causes the plug gap to widen fast.
It's
  > kind of like having a small EDM (Electrical Discharge Machining) in the
  > combustion chamber. Of course we are all spoiled and now expect spark
plugs
  > to last 100K miles.
  > .
  > .
  >
  >
  > > Don't half of the plugs on the SHO really fire backwards from normal
  > > thinking.  i.e I was thinking the polarity was reversed on 3.  Maybe
  > > I'm nuts.
  > >
  > > Z
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