The next hotter plug from the Champion RN12YC is the Champion RN11YC. Hotter plugs typically have a shorter insulator nose, which allows them to run at a higher temperature, improving combustion efficiency and reducing fouling in certain applications. When considering a hotter plug, it's essential to ensure it aligns with your engine's requirements to prevent pre-ignition or detonation issues.
Harley-Davidson uses .040" gap in their engines using this plug.
0.035 inch gap using Champion RN12YC Spark Plugs
NGK BPR6ES Champion RN9YC Champion Rn11YC4 [hotter plug fights carbon buildup
hello,a N2C is the correct one,N3C is the next hotter,gap at .025-.032.
A CJ8 Champion plug can be used with a 1974 lawn tractor that uses unleaded gas, however, it would be better to go with a hotter plug. The hotter plugs will keep the tractor running longer without needing to replace the plug sooner than expected.
Cj8 is hotter than cj7
RN12YC and RC12YC are not interchangeable. The "R" in RN12YC signifies a resistor plug, which helps reduce electromagnetic interference. The "C" in RC12YC denotes a copper core plug, which provides better heat dissipation. Using the incorrect type of spark plug can lead to poor engine performance and potential damage.
H-D Brand: 5R6A Screamin' Eagle: EVS13S Accel: 2410A AC Delco: R44NS Autolite: 4265 Champion: RN12YC NGK: BPR5ES-11
THE FACTORY REPLACEMENT PLUG -R44T OR TS .. BUT MOST EVERYBODY RUNS NEXT HOTTER PLUG -R45TS!!!!
depends how long you leave them in the freezer. The best I can remember, the 5R6A is the colder of the two.
This plug is the Champion RCJ7Y.
Champion RCJ6Y