Mike, I have not seen that number before. THe 1500 heads I have say 218139.
Here is something that you might find more revealing.
The distance between the head surface and the top of the combustion chamber of
the two heads are as follows:
1500 5/8"
1296 3/8"
So, with a quarter inch difference, it is nod difficult to tell which is which,
unless of course the head has previously been shaved.
Joe
P.S. At 45 cc, I expect there might have been some shaving on that head in the
past.
Mike Chambers wrote:
>
> Joe,
> Near the rear it is stamped 218143. I cc'ed one chamber to approximately
> 45cc's.
> thanks
> MikeC
>
> >
> > Mike,
> > THere are some numbers stamped onto the head (not the cast ones). Give me
> the number string and I'll tell you what I think it is.
> >
> > BTW, Before the head work, my 1500 head that I put on my 1296 race engine
> measured 50 cc.
> >
> > Joe
> >
> > Mike Chambers wrote:
> > >
> > > I'm trying to decide which head I have. Can someone tell me the
> combustion
> > > chamber volumes for a 1296 and a 1500 head.
> > > Thanks
> > > MikeC
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