Ski Boat Forum

Repairs and Maintenance => Engine Repair/Maintenance - All Ski Boats => Topic started by: duayla on July 08, 2010, 10:32:26 AM

Title: Spark plug gap with electronic ignition
Post by: duayla on July 08, 2010, 10:32:26 AM

I have an 82 A/S with a 351. I put a mallory electronic ignition in and ready to replace the spark plugs. Does anyone know if the plug gap should be increased from .032"?

Title: Re: Spark plug gap with electronic ignition
Post by: phil on July 08, 2010, 02:00:48 PM

Use Autolites 24 or NGK BPR6FS plugs. Gap should be .035.

Title: Re: Spark plug gap with electronic ignition
Post by: Midskier on July 09, 2010, 07:52:25 AM

hotter spark can easily get away with wider gaps

Commander Fords either .032" or .035"

PCM Ford and Chevy with convention old school ignitions call for .035"

the electronic ignition you doesn't make the spark any hotter than the coil installed can provide
but it will pass close to full coil voltage now because of the better switching compared to the points

I set my points boats to .035", electronic conversions to .040", new chevys w/ EST to .045"

good luck

Dan T

Title: Re: Spark plug gap with electronic ignition
Post by: duayla on July 10, 2010, 10:09:57 AM

Thank you that is the information I needed..   Lou