I had a lot of trouble. I was asked to find champion L-84r plugs. No one has them, they are discontinued. I was told the denso 4064 would be the same specs and would work. But then I found out the NGK 6366 would work too. Also that the NGK was a better plug to use. Does NGK make a plug that would work that is not iridium and would work?
my notes:
Denso 4064 5.99 NLY HAS 15 LEFT IN STOCK!!! - 14mm Thread Size, 12.7mm (1/2") Reach, 13/16" (20.6mm) Hex Size, Gasket Seat, Non-Resistor, Removable Terminal Nut, Racing Type Nickel Ground Electrode, .027" (0.7mm) Gap, Heat Range 31
ngk 6366 $32.00
Gold Palladium Plug, 14mm Thread Size, 12.7mm (1/2") Reach, 13/16" (20.6mm) Hex Size, Gasket Seat, Non-Resistor, Solid Terminal Nut, Removable Terminal Nut, Fine Wire Gold Palladium Center Electrode, Fine Wire Platinum Angled Ground Electrode, .026" (0.65mm) Gap, Heat Range 10
Fine wire racing plugs are designed to give you a stronger spark from your existing ignition system. Fine wire gold palladium center electrode requires less voltage to ionize(jump) the plug gap. This allows a stronger spark which will better ignite the air fuel mixture leading to more power. The gold palladium center electrode and the platinum ground electrode for increased durability. Fine wire platinum ground electrode to reduce quenching. Reduced height plug. Hand made in Japan and constructed to withstand the most extreme racing environments.