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Replaced plugs... 140-160 1974

posted by  someone claiming to be cdu on  Fri Apr 25 18:15 CST 2003 [RELATED]


Platinum or other spiffy plugs are only useful if you plan on using
the same plugs in the motor for 60,000 or more miles. They don't throw
a better spark or make the gas burn better or prevent carbon buildup
better than a normal plug of the same heat range -- they just last
longer without wearing out.

Of course, in a carbureted motor without lots of sensors to cause the
exactly correct amount of fuel to be delivered for the current situation,
the plugs will certainly get fouled or melted from running lean or get
oil deposits long before they would wear out.

This is why I use $0.90 bosch copper plugs in my cars and sand them
with a nail file from time to time (which would destroy a platinum
plug, or at least ruin the platinumness). I'd use junkyard plugs if
they looked okay...

That said, they should work just as well as the other plugs that were
in there.
chris






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