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Quote from: Martin6 on March 13, 2023, 09:45:19 PMWhich Denso plugs? X-24ES?24's are fine on a 750 sohc
Which Denso plugs? X-24ES?
Quote from: Trigger on March 13, 2023, 09:58:08 PMQuote from: Martin6 on March 13, 2023, 09:45:19 PMWhich Denso plugs? X-24ES?24's are fine on a 750 sohc What is DENSO alternative for 500/550?DENSO is not copied as NGK?
Quote from: Erny on March 13, 2023, 10:16:02 PMQuote from: Trigger on March 13, 2023, 09:58:08 PMQuote from: Martin6 on March 13, 2023, 09:45:19 PMWhich Denso plugs? X-24ES?24's are fine on a 750 sohc What is DENSO alternative for 500/550?DENSO is not copied as NGK?My workshop manual and owners manual quotes X22ES for 500s. Denso no 4090.
The key point here is that higher performance engines require a ‘colder’ plug to help disperse the resultant heat from combustion faster. The ceramic insulators on ‘colder’ plugs are generally smaller, allowing faster heat dispersion. In the Denso terminology, the bigger the number the colder the plug. So an X-22 is a ‘hotter’ plug compared with the X-24 which is ‘colder’ in Denso terminology.