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Author Topic: cylinder head id?  (Read 819 times)

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Offline hondacbrider

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cylinder head id?
« on: August 07, 2011, 08:48:41 am »
I have a cylinder head sitting in my shed that has the # 125 stamped on top beside the cam chain.

Can anyone tell me what it's from? It is painted black, but I don't want to assume it's a 750f just because of that.
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: cylinder head id?
« Reply #1 on: August 07, 2011, 09:22:56 am »
Which F would you be referring to? Paint is irrelavent since all heads can be painted.

There were 2 distinct F's. 392 on the top fin back side next to #3 would indicate a 75/76 F or 77/78 K while 410 would indicate 77/78 F. Larger intake AND exhaust valves would indicate a 77/78 F. Larger intakes only would indicate a modified non-77/78 F.
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As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline 754

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Re: cylinder head id?
« Reply #2 on: August 07, 2011, 09:27:50 am »
Look at how many bars are visible from side of head between fins.. are they tround or 3 oval ones?
 If there is three. look at the top rearfin between 2 & 3 cylinders for a sorta oval logo  or number cast on..  also what holds the exhaust? studs or a spigot..?
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Maker of the WELDLESS 750 Frame Kit
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Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline hondacbrider

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Re: cylinder head id?
« Reply #3 on: August 07, 2011, 11:58:10 am »
Attached are some pics.
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Offline Old Scrambler

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Re: cylinder head id?
« Reply #4 on: August 07, 2011, 03:29:40 pm »
Looks like a K head to early K-3
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Dennis in Wisconsin
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Re: cylinder head id?
« Reply #5 on: August 07, 2011, 05:22:13 pm »
K0 or sandcast head   :o
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Offline 754

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Re: cylinder head id?
« Reply #6 on: August 07, 2011, 09:59:55 pm »
Can I have it ?

 WHERE ARE YOU ANYWAY ?

 If the fins are all good I will give you a 78 F motor for those parts..
 I have Motor # 10,***, that needs a topend..
« Last Edit: August 07, 2011, 10:26:51 pm by 754 »
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Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way
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