Author Topic: Chocolate Valve Guides? Strange CB500 Head?  (Read 1422 times)

Online AshimotoK0

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Re: Chocolate Valve Guides? Strange CB500 Head?
« Reply #15 on: January 17, 2018, 06:57:48 PM »
Checked my 3/71 500K0  head and it's the same as the strange one you bought ...so mystery solved
“Alright friends, you have seen the heavy groups, now you will see morning maniac music. Believe me, yeah. It’s a new dawn.” Grace Slick, Woodstock '69 .. In the year of the Sandcast.

Offline Trigger

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Re: Chocolate Valve Guides? Strange CB500 Head?
« Reply #16 on: January 17, 2018, 07:04:59 PM »
Most early 500 heads had them oil ways, you can just see the holes under the cam


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Offline Seabeowner

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Re: Chocolate Valve Guides? Strange CB500 Head?
« Reply #17 on: January 18, 2018, 12:32:45 PM »
Well you live and learn. Thanks for clearing that up. I wonder how long they kept to it. There was a 12200-323-000 followed by a -010 revision. Also notice the centre bearing surfaces have no groove as it doesn't need to feed the oil bath.
I didn't buy the one pictured. It is still available in the US at <£10! +++
https://www.ebay.co.uk/itm/A-71-73-VINTAGE-HONDA-CB500-FOUR-CB-500-OEM-ENGINE-TOP-END-CYLINDER-HEAD/152867426340?epid=1923387534&hash=item23979bd024:g:k48AAOSwp7FaXPqr
Phil
1971  CB500K0  Candy Jade Green or Candy Gold
1973  CB500K1  Candy Ruby Red
1975  CB550F1   Shiny Orange
1978  CB550K     Excel Black

Offline paulbaker1954

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Re: Chocolate Valve Guides? Strange CB500 Head?
« Reply #18 on: January 19, 2018, 11:39:57 PM »
Here’s my 71 K0 500 head which does not have this feature
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1971 Honda CB500 Four K0

Offline Trigger

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Re: Chocolate Valve Guides? Strange CB500 Head?
« Reply #19 on: January 20, 2018, 08:04:26 AM »
Here’s my 71 K0 500 head which does not have this feature


How would you know that your head is original to the engine  ;) The early heads were upgraded for obvious reasons  :o

 

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