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Old 02-23-2011, 03:55 PM   #11
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Quote:
Originally Posted by 1bille1 View Post
http://www.nology.com/silver.html

All this sparkplug talk, recently, jogged my memory regarding SILVER spark plugs.

SIlver is the best conductor- bar none.
Opinions????
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. Not saying they are worthless, but I would go with copper before silver any day. That is if I did not put the OEMs in it.

I have 100,000+ on my 08, with the original plugs. Time for a tune up soon.
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Old 02-23-2011, 04:09 PM   #12
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great write up!--unless anyone knows any different, i should still see the approx. 5 hp gain even with my pzev if i switch to the 103's as well?
no hp gains if your car is stock
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Old 02-23-2011, 04:57 PM   #13
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Quote:
Originally Posted by 1bille1 View Post
http://www.nology.com/silver.html

All this sparkplug talk, recently, jogged my memory regarding SILVER spark plugs.

SIlver is the best conductor- bar none.
Opinions????
Nology, the godiva of ricer gear
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Originally Posted by DarkSpork View Post
I'm sorry if this is a stupid question, but was your note on gapping for the copper plugs or platinum plugs? If it was about copper plugs, would a larger gap on platinum plugs yield similar gains?
not stupid, no you would not, the platinum plug in itself is a weakness. we're getting gains from copper to start with, and gapping secondly. thirdly the platinum plugs are picky and when the gap does increase from wear you know it right away, car runs like crap and the check engine light will probably come on for misfires. the platinum is a higher resistance metal and requires much more energy for the spark to jump. you expand that gap we're talking even more energy being used.
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Originally Posted by 10SES View Post
great write up!--unless anyone knows any different, i should still see the approx. 5 hp gain even with my pzev if i switch to the 103's as well?
last dyno chart I saw, it was on a stock vehicle.
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Old 02-23-2011, 06:36 PM   #14
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Quote:
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.


http://www.kitco.com/jewelry/meltingpoints.html
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Old 02-23-2011, 06:38 PM   #15
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Originally Posted by wickedgreyzx3 View Post
Nology, the godiva of ricer gear.
Ignore the messenger and heed the actual message- silver is the best conductor of electricity, as well as heat.
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Old 02-23-2011, 06:43 PM   #16
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so what is the best sparkpluges for 2010 focus?
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Old 02-23-2011, 08:35 PM   #17
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so what is the best sparkpluges for 2010 focus?
autolite 103's
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Old 02-23-2011, 08:37 PM   #18
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also ... can't we ever have a spark plug thread that doesn't start a presidential election?
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Old 02-23-2011, 08:48 PM   #19
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Okay, I'll bite. I've seen posts here that say no gain in a stock engine, others say there is a gain from the coppers gapped at .055. My engine is bone stock, no tune, nothing; was that the baseline for the dyno pulls that showed the ~ 5 hp gain? I've got no problem with going to a 103 (colder) plug, used to do it all the time as I tend to drive "enthusiastically" and my parts guys already think I'm crazy and will sell my whatever I ask for.
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Old 02-23-2011, 09:29 PM   #20
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autolite 103's
thanks
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