Originally posted by Importslayer:
1. Platinumh has more electrodes.
2. The smaller the electorde the stronger your electric field will be which inturn requires less voltage.
3. Given you better combustion...but according to u the plug isn't a factor after flash....


Woo hoo. Just what I needed tonight.

1. Eh?
On the standard plug there are 2 electrodes: Ground & Center.

On redundant plugs there can be multiple ground electrodes. Do not be fooled by thinking you are suddenly getting sparks jumping to all the electrodes. The spark will still choose the path of least resistance each time.

On a single platinum plug the center (note the word SINGLE) electrode has a platinum button affixed (normally done by laser welding with a notable exception being the POS Bosch injected porcelain tips) to the end of a copper alloy inner rod. The ground electrode is standard treated or plated steel alloy.

On a double platinum plug (note the word DOUBLE) the ground electrode has a platinum button affixed to it in same previously stated fashion.

2. Actually the smaller the electrode the less distance the spark has to jump. The edges are close to the center. This is a reason why there are plugs such as NGK's V-power, AC Rapidfires, ND U-groove, etc.
It is also stated that a fine electrode reduces emissions and can give better throttle response. Hence why the big switch to these style plugs can be seen in newer cars.

3. If that were true in the strictest sense then spark plugs would give you a HP advantage because they improve combustion efficiency. Which of course is not going to happen.
That is correct. A plug's spark is not a factor after full mixture ignition.

No where did I ever state the spark plug itself was not a factor afterwards.
The spark plugs acts as a heat sink for the combustion chamber by pulling heat out into the water jackets. This is why spark plugs have heat ranges.

2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.