View Full Version : Spark plug gap
slickster
04-01-2011, 10:27 AM
What plug gap is best for these cars. Or is factory best
fastblackmerc
04-01-2011, 11:12 AM
Factory gap especially if your NA.
I gap mine on the low end of the range.
ctrlraven
04-01-2011, 02:44 PM
Factory gap is .054 for NA.
fastblackmerc
04-02-2011, 06:02 AM
Factory gap is .054 for NA.
Actually the gap is 0.052 to 0.056 per the owners manual.
I gap mine at the lower spec so as the plug wears it will still be in the range.
dakslim
04-02-2011, 09:31 AM
Actually the gap is 0.052 to 0.056 per the owners manual.
I gap mine at the lower spec so as the plug wears it will still be in the range.
Can't wear too much in a years time.:lol:
ctrlraven
04-02-2011, 09:03 PM
I run .036 gap on my plugs for NA.
JimmyXR7
04-03-2011, 07:17 AM
Actually the gap is 0.052 to 0.056 per the owners manual.
I gap mine at the lower spec so as the plug wears it will still be in the range.
For platimum coated, gap at 0.054.
For traditional or copper, gap at the lower end at 0.052, to allow for wear like FBM said.
Traditional spark plugs, replace/re-gap at about 6,000 miles or if they become fouled.
Platimum, in my marauder, lasted about 60,000 miles. They were still clean, but the platimum was worn.
Jim
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