Re: spark plug recommendations !!
Yes, single electrode plugs should be indexed with the "open" gap toward the exhaust valve.
This aids in correct flame front travel and orientation, fast burn and more complete burn with increased HP and less emisions.
Caution: When marking the plug to indicate the gap you must use a special dielectric marker, so as not to short the plug. Most normal markers have ink that will conduct electricity.
Both tapered and flat indexing washer kits are available, usually in 3 size ranges. Try Powerhouse products.
Last edited by DJWorm; 07-30-2009 at 08:28 AM.