Topic: RE: CB750 Sandcast head 0?

[chewbacca5000]

While fixing my leaky pucks I noticed that my head had the drilled oil passageways and 0 stamped on the head.  Could my head be Sandcast head 0?

Pretty excited!  I know this bike makes tons of power.

[754]

Does it have the front Centre bolt in front of 2/3plugs ?

[chewbacca5000]

Does it have the front Centre bolt in front of 2/3plugs ?

Is this the pic you need?

[chewbacca5000]

I am dying here.  Is this Sandcast 0?

[754]

Look an inch higher is there a bolt in the middle or not.
Sandcast heads are not numbered on a per bike basis.

[chewbacca5000]

Look an inch higher is there a bolt in the middle or not.
Sandcast heads are not numbered on a per bike basis.

No bolt.  Is it a sandcast?  What is with the zero stamped in there?

[754]

It's 26,*** or lower. Someone may be able to narrow it down more.. What number are the cases?

[chewbacca5000]

Cases are k1.  Crank appears to have been lightened as you can see where the big chunk on the end of the alternator was removed.

[chewbacca5000]

Thanks Frank!  You mean 2,600 or lower?

[754]

Nope there's 26 thousand heads with the missing bolt hole,and cylinders to match
I am pretty sure early heads have differences, but not sure how to tell .
Now if the valve cover looked a lot different. Underneath, like graph paper or a waffle...I would suspect  early..

[chewbacca5000]

Trying to account for all the power this engine makes, and maybe the head is part of the deal.  The cam did not have the typical R# stamped into it like honda cams so.

It has a raised circle with F on it.  Any ideas what that would mean? 

[754]

Does it have any rings around it?

[kmb69]

Those heads, early carbs, and early exhaust made noticeably more power IMHO.