Honda-SOHC

SOHC.co.uk Forums => CB500/550 => Topic started by: Erny on February 20, 2021, 11:00:53 AM

Title: CB500K-550K-550F cyl. head compatibility and identification
Post by: Erny on February 20, 2021, 11:00:53 AM
Went through parts catalogues (CMS), just want to have it confirmed from experts here
I understood, there were 2 PN - 12200-323-010 and later 12200-374-000. Seems there were also 2 types of EX valve guides in production.

- are cylinder heads compatible across all CB500K - 500K - 550F?
- how to identify what head is what PN? Is there some "marking" on head casting allowing that?


Why these questions - I'm preparing for engine rebuild, have possibility to buy set head+cam+valve cover (new type) for good price, but seller is unable to confirm exact head type. Idea is to rebuild that head and swap it on my engine as whole (saving some time) and keep my head as spare for future.

Title: Re: CB500K-550K-550F cyl. head compatibility and identification
Post by: Bryanj on February 20, 2021, 01:29:08 PM
All years 500 or 550 will fit with no problem even headgasket from std 500 to 1mm o/s 550 is same. The 010 end number usually denotes a different supplier or possibly a different market.
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