Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - The Duratec Sparkplug Sticky
View Single Post
Old 02-23-2011, 05:36 PM   #14
Focus Enthusiast
Join Date: Jan 2011
Fan#: 82596
Location: poway, CA
What I Drive: 2000 black zts

Posts: 233
FF Reputation: 1 1bille1 Good Standing Member
Buy-Sell-Trade Rating: (0)
Originally Posted by whitefox View Post
To be truthful, gold is the best conductor for electronic components, but who can afford gold core spark plugs. Plus they would not last long in their true form. The problem with silver, it is a soft metal like gold and could burn out quicker. .
I'm sorry that's incorrect.

Silver has the higest conductance, lowest resistance, and highest thermal conductivity of any metal.

Melting points for copper/silver are aprox. 1900F and 1700 F, respectively. Since EGT's run several hundred degrees F below that, and actual sparkplug temps well below EGT - worries about it wearing away are pretty groundless.
1bille1 is offline  
    Reply With Quote