What is the difference between Champion spark plug RCJ6Y & RCJ7Y?
According to Champion Heat Range Chart, Federal-Mogul Document #1521 RCJ8Y, RCJ7Y and RCJ6Y are same Thread Size (14mm, 3/8″ reach, 3/4″ hex). The difference is Heat Range, RCJ8Y is Hot, RCJ6Y Cold. Heat Range indicates the ability of spark plug to reach self-cleaning temperature to prevent carbon fouling.
What is equivalent to an ngk BPR6ES?
Denso Spark Plug W20EPR-U. Replaces NGK BPR6ES, Autolite 4263 & Champion RN9YC.
What does the Y mean on a spark plug?
A copper center core is indicated by the letter “S”. There is a fine wire gold palladium center electrode in the letter V. A V-grooved center electrode is indicated by the letter Y. The spark plug gap is indicated by the number after the number.
What do the numbers on Champion spark plugs mean?
[15] Heat Range – The middle number indicates the heat range of the spark plug, the higher the number the hotter the heat range.
What’s the difference between BPR5ES and BPR6ES?
These plugs are BPR6ES instead of BPR5ES which is what the gcv 190 engines use. Running the 6ES plug in an engine designed for a 5ES plug will result in premature fouling since the 6ES is a colder plug.
What does NGK BPR5ES fit?
Genuine NGK BPR5ES It is featured on Honda and Toro Walk Mowers, Toro and Exmark Riding Mowers, Honda generators, pumps and thousands of other engines.
What happens if spark plugs are too cold?
A “cold” spark has a shorter insulator and retains less heat at the tip end—but if it’s too cold, deposits accumulate and eventually the plug will short out (known as “fouling”).
Do hotter spark plugs make a difference?
Found in many passenger vehicles, hot spark plugs have more insulation to transfer the heat slowly, which keeps the temperature high enough to burn off carbon deposits and avoid premature fouling. This helps allow for more time between spark plug changes.
Can I use BPR6ES for BPR5ES?
Does spark plug heat range affect performance?
Choosing the right heat range is crucial for high performance engines. If the heat range is too cold, the spark plug will be unable to properly self-clean by burning off carbon deposits. If it the heat range is too hot, your engine could experience detonation, pre-ignition, or power loss.
How do you know which spark plug is colder?
The higher the number, the hotter the plug. The lower the number, the colder the plug. Starting with part # 24 (heat range 4), if you want a colder plug you would use part # 23 (heat range 3), for a hotter plug you would use part # 25 (heat range 5).