.035 inch
0.035 inch gap using Champion RN12YC Spark Plugs
I'd recommend using the OEM plugs. Which would be champion double platinums.
In place of the JENN FENG 9295-331501, I am successfully using a NGK (7021) BPM6A sparkplug; Which is cross referenced to two Champion plugs CHAMPION CJ8Y or CJ7Y
0.9 mm 0.03543 inch
Chrysler recommends using Champion spark plugs and gapping at 0.35 (in thousandths of an inch).
It depends on what heads and ignition system you're using. You'll have better luck with AC plugs in a Chevy.
The Champion RC12YC and RC12YX spark plugs are not interchangeable because they have different heat ranges and design features. The RC12YC is typically used in applications that require a cooler operating temperature, while the RC12YX is designed for higher performance. Always consult your engine's specifications or a professional to ensure you're using the correct spark plug for your specific application.
Using a key
If using standard copper core spark plugs, every 30,000 miles. If using platinum plugs, up to every 100,000.
The Colony Accepted The Plymouth Grows Of The Indians.
The correct spark plug gap for the 2004 model, 40 hp Mercury outboard 2 stroke is .040 in.
rique orozco