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Discussion Starter · #1 ·
I need plugs bad. I was wondering what some other 2zz ppl have tried. Anybody try running a colder plug on a stock/near stock car? I was debating it as i'm pretty sure I drive hard enough to get them to cleaning temp. lol.

Any specific suggestions would be great.
 

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any spark plug will work... the only reason makers tell you to use platinum or iridium on some engines, it's simply to warrant a longer service interval... of course, high power ignition systems/coils will wear out the weaker metals faster, so an iridium plug will probably last longer than a platinum one, and both of these will outlast copper...
R
 

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BadTOYO said:
any spark plug will work... the only reason makers tell you to use platinum or iridium on some engines, it's simply to warrant a longer service interval... of course, high power ignition systems/coils will wear out the weaker metals faster, so an iridium plug will probably last longer than a platinum one, and both of these will outlast copper...
R
:werd:
 

· Zettai Unmei Mokushiroku
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Iridium plugs are also much more efficient in energy transfer:
http://www.densoiridium.com/voltagerequirements.php

Fewer Volts Means More Amps

DENSO Iridium spark plugs require on average 5,000 fewer volts to fire than conventional spark plugs.

Less power is required to fire DENSO Iridium Power Plugs, and coupled with our patented U-Groove technology, the use of Iridium alloy, the tapered cut, and the ultra fine 0.4mm diameter electrode translates to increased horsepower throughout the dyno range.



"It takes 5,000 volts less to fire a DENSO Iridium Power spark plug versus a conventional platinum spark plug.

-SAE Technical Paper Series
March 1-4, 1999
 

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Notice how they don't compare to copper plugs...

I haven't seen any evidence thus far that states the benefits of a smaller iridium electrode outweigh the MASSIVE difference in conductivity between copper and platinum. Conductivity plays a key role in voltage demands as well. :D

The V-Powers also have the "V" groove technology (just a different letter) that translates into better spark jump/induced flamefront.
 

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Discussion Starter · #15 ·
Sorry to bump my own thread but,
nobody has tried a 1 range colder plug on stock/near stock car?
In theory, it would make our cars less prone to detonation, but would they foul?
I drive pretty hard most of the time, and most of my trips are 20min or more,
does anyone think i could get them to cleaning temp on a reg basis.
Also, i was told that denso's are better than ngk's, any truth?
 

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Because the plugs aren't burning up or causing pre-ignition. A colder plug would just foul sooner on a stock setup. I like the Denso iridium power plug. The pos. electrode is smaller than the standard iridium and takes less energy to fire than any copper or other available plug.
 
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