Author Topic: CB500K-550K-550F cyl. head compatibility and identification  (Read 77 times)

Offline Erny

  • CB750K7 CB550K1
  • SOHC Expert
  • Posts: 414
    • View Profile
CB500K-550K-550F cyl. head compatibility and identification
« 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.

CB750K7 US model (1977)
CB550K1 US model (1975)

Offline Bryanj

  • Grogu
  • *
  • Posts: 7607
    • View Profile
Re: CB500K-550K-550F cyl. head compatibility and identification
« Reply #1 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.

 

SimplePortal 2.3.5 © 2008-2012, SimplePortal