SOHC.co.uk Forums > CB500/550
Help needed to identify my CB500-4
AshimotoK0:
--- Quote from: B11sey on February 07, 2023, 05:47:08 PM ---Ashimoto
My engine number shows it was made before the gearbox mods so I definatly need to check this
--- End quote ---
Here are my pics from the time I stripped mine. I think the oil guides mentioned and modified clutch cover improved the design but the 550 gained a little trochoidal oil pump to lubricate the bearing better. Initially, I thought my counter-shaft was OK but I checked the surface with a microscope and there was weird pattern of crazing/micro-cracking so I replaced it.
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B11sey:
Thanks Ashimoto useful information
Bryanj:
The clutch cover was part of a mod kit incuding neutral rollers, selector drum locator, clutch plates, pusrod and an oil guide. There should be a bulletin in Ashs dropbox or alladins cave
AshimotoK0:
Thinking about Ken .. quite a few Honda models were not sold here until a year after they were launched for sale in the USA like 400/4 and Black Bomber CB450K0 and of course CB750
Bryanj:
Probably as us was biggest market
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