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Author Topic:   SS spark plugs?
63WHALER posted 04-13-2004 08:54 PM ET (US)   Profile for 63WHALER  
I have a quick question concerning spark plugs. I know in my applications they call for a Champion #QL77J4, and I've noticed the same plug is available through some marine outfitters in a Stainless Steel variety.

Are the SS any better or worth double to three times the cost of the standard plugs?

Thanks in advance!

dlmenius posted 04-13-2004 09:04 PM ET (US)     Profile for dlmenius  Send Email to dlmenius     
Is stainless steel a conductor? I didn't think there were (m)any free electrons.
63WHALER posted 04-13-2004 09:12 PM ET (US)     Profile for 63WHALER    
I checked the add once more and it stated a Stainless Steel shell and copper core ground electrode.

The price per one is $6.99 for SS and 3.59 for standard.

Just curious on others insight or experience with them.

Chuck Tribolet posted 04-13-2004 10:15 PM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
At those high voltages and low currents, a little resistance
won't hurt a bit. Remember that there are RESISTOR plugs
and RESISTOR wires, and their resistance is WAY above SS.

SS makes sense on a saltwater boat that doesn't get much
usage and only gets the plugs changed every few years. For
freshwater, or a 100 hours and change the plugs every year on
saltwater, save your bucks unless you have a plug corrosion


Dick posted 04-13-2004 10:19 PM ET (US)     Profile for Dick  Send Email to Dick     
You will probably change your plugs once a year or once every other year at the most. I can't see any benefit to using ss body plugs. They will not perform any better than standard plugs just be more resistant to exterior corrosion.
Put a dab of anti sieze compund on the threads of the standard plugs when you install them and give the plug exteriors a spray of CRC 6-56, or similar, a few times a season.

My opinion. Don't waste your money on ss body plugs.


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