[TR] Iridium tip spark plugs

[Randall]

> Thanks Randall, I might as well try as they are useless as 
> is.  Is the iridium tip as good a conductor as copper?

Beats me.  How well it conducts is not the issue, but rather how well it
functions as a spark plug electrode.  Copper would be lousy, IMO, but how
well "Iridium" compares to what they normally (or the "platinum" plugs I
use), I have no idea.

Randall