Head ID

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Alan Winer
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Head ID

#1 Post by Alan Winer » Thu Mar 01, 2018 4:17 pm

Can someone give me some info on these heads I'm using for a rebuild.
I assume they are C/SC heads. They are black anodized with 38mm intake & 34 exhaust valves. I know the SC heads were anodized and there are few examples of C heads that were anodized..........
BUT they are numbered 616-104-301-.02 and I could not find this number in the parts manual or the parts number index.
Thanks,
Alan

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David Jones
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Re: Head ID

#2 Post by David Jones » Thu Mar 01, 2018 4:41 pm

If I had known I would live this long I would have pushed the envelope a little harder.
Cymru am byth
David Jones #9715

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Alan Winer
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Re: Head ID

#3 Post by Alan Winer » Thu Mar 01, 2018 5:34 pm

David,
I had considered that they were 912, but there is no PVC (Positive Crankcase Ventilation) hole up where the shroud screws in. The link you forwarded did list that number as C/SC & 912 but I see no mention of that number the C parts manual. Perhaps a possible replacement part?
Alan

Dick Weiss
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Re: Head ID

#4 Post by Dick Weiss » Thu Mar 01, 2018 8:56 pm

Alan, my $.02 findings, unless--?

The C/SC cylinder head w/o the vent hole is listed as 616 104 106 01; The SC heads were blackened like the S90s incl. some C's, but that was discontinued on the 912 heads w/the vent hole added and is listed as 616 104 036 02--All later castings have the vent hole.

Dick

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