SOHC.co.uk Forums > CB750
Spark Plug
Oddjob:
Quite right it should be X22ES, that would have been what I bought, they've been in a box in the loft ever since.
TBH I've never used Denso except for a time in the 70s, I've always used NGK but for the price of the Denso plugs now I'll take a chance on them, plus no copies unlike the NGK plugs
Spitfire:
I've been using Denso X-24ES-U plugs in my 750F1 since I got the bike on the road after rebuild around 2008i sh and they work a lot better than the NGK's now that you can't get the proper ones (D8ES-L).
Cheers
Dennis
Trigger:
--- Quote from: Seabeowner on March 14, 2023, 07:12:55 PM ---
--- Quote from: Erny on March 13, 2023, 10:16:02 PM ---
--- Quote from: Trigger on March 13, 2023, 09:58:08 PM ---
--- Quote from: Martin6 on March 13, 2023, 09:45:19 PM ---Which Denso plugs? X-24ES?
--- End quote ---
24's are fine on a 750 sohc ;)
--- End quote ---
What is DENSO alternative for 500/550?
DENSO is not copied as NGK?
--- End quote ---
My workshop manual and owners manual quotes X22ES for 500s. Denso no 4090.
--- End quote ---
That is correct :o but, you can use either . The X-24 are a hotter running plug than the X-22 and i have found if you are only using the bike in fine spring and summer weather the X-24 are a better plug, which have been superseded to the X-24 ES-U . Seeing most members that do ride a SOHC, don't ride in cold conditions ;)
Trigger:
Forgot to mention before. It is not just spark plugs that have superseded over the years, it is also fuel. The X-24ES-U is more suitable for E5 and E10 petrol ;)
Sesman:
Please, do tell…..
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