Quote Originally Posted by firozmusthafa View Post
No doubt surface discharge type lasts longer than j type electrode. Alteast with my experiments with non projected torque master surface discharge non resistor spark plugs last longer than j type plugs. When I removed the j ground electrode completely from cheap Chinese non resistor plug it performed way better than torque master due to larger electrode gap. Larger gap is the key to better performance. Need to try out higher ignition voltage along with larger gap and plasma...
But a surface discharge spark plug needs ~half the power to overcome a gap.