Honda CB750 Sandcast

General Category => General Discussion => Topic started by: Sgt.Pinback on November 01, 2013, 03:21:29 pm

Title: Cylinder Head - please identify
Post by: Sgt.Pinback on November 01, 2013, 03:21:29 pm

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?


(http://i1077.photobucket.com/albums/w461/Uli911/CB%20750/DSC_0178_zpse6e6f538.jpg) (http://s1077.photobucket.com/user/Uli911/media/CB%20750/DSC_0178_zpse6e6f538.jpg.html)

(http://i1077.photobucket.com/albums/w461/Uli911/CB%20750/DSC_0179_zps5fc6d7af.jpg) (http://s1077.photobucket.com/user/Uli911/media/CB%20750/DSC_0179_zps5fc6d7af.jpg.html)

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

(http://i1077.photobucket.com/albums/w461/Uli911/CB%20750/DSC_0177_zpsef44af73.jpg) (http://s1077.photobucket.com/user/Uli911/media/CB%20750/DSC_0177_zpsef44af73.jpg.html)

Title: Re: Cylinder Head - please identify
Post by: Marcello Tha on November 01, 2013, 08:59:04 pm

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

Title: Re: Cylinder Head - please identify
Post by: steff750 on November 02, 2013, 12:48:47 pm

 ;) 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 .

Title: Re: Cylinder Head - please identify
Post by: Sgt.Pinback on November 02, 2013, 02:45:07 pm

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

Title: Re: Cylinder Head - please identify
Post by: Don R on November 14, 2013, 02:19:50 am

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

Title: Re: Cylinder Head - please identify
Post by: tomcourtney on November 16, 2013, 02:08:24 am

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

Title: Re: Cylinder Head - please identify
Post by: greggo325 on November 16, 2013, 02:02:24 pm

Quote from: tomcourtney on November 16, 2013, 02:08:24 am

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?

(http://i1197.photobucket.com/albums/aa424/greggo325/null_zps1763c6c4.jpg) (http://s1197.photobucket.com/user/greggo325/media/null_zps1763c6c4.jpg.html)

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