Cylinder Head - please identify

[Sgt.Pinback]

I know there are some cylinder head discussions, but I am still not able to see the differences

As written in my intro, I have got a lot of spare parts. E.g. some cylinder heads.
Two have that "300" stamp on it, two others dont have it.

Can you tell me more?






And some more funny figures "12.25..." in the second dimple

[Marcello Tha]

Sure it is not a sandcast cylinder head cause has the 6x90 bolt hole.
Maybe from a 26144 to 64902 engine.
The attached photos are from E7083 for comparison.

Marcello

[steff750]

  i dont think its anything special really just one of the thousands of k2~ heads that mr Honda slammed out in the seventies could be a k1 but the oil metering jets makes it at least a k2 to me or even later not sure when they changed for them type of oil jets. its not a sandcast or a k0 just my thoughts on it .

[Sgt.Pinback]

Thank you to all for the info. I will get rid of it.

[Don R]

I think the K2 still had some nice ports, I believe they stopped cleaning them up at K3.

[tomcourtney]

yes that's a later head the boss for the 6X90 bolt between 2 and 3 is square on the earlier heads tc

[greggo325]

yes that's a later head the boss for the 6X90 bolt between 2 and 3 is square on the earlier heads tc

Like this one Tom?



This is what I pulled from #371, but it had .50 pistons, so it's been opened before.