Mahalo for the pictures Keith. Are the intake and
exhaust siamezed?? Actually think I just figured out
that it is a four valve cylinder. On the before
pictures see valve guides approximately in the middle
of the picture and what I think are the valve seats
above. Having problems visualizing the seats,
possibly because they are at an angle.
The after picture is totalling confusing. Could you
post a couple of pictures taken at different angles so
we could get a better idea of what you've done.
The finish on the massaged head looks to be polished
to my untrained eye. Is this a trick of the camera or
is it really smooth as pictured.
Us amauteurs, fortunate to live in the middle of
nowhere, find this kind of information extremely
helpful.
Aloha
Peter O.
--- Keith Tanner <keith@miata.net> wrote:
>
> >I was told that polishing is not a good idea, as
> the small imperfections
> >in the bore helps to maintain swirls... and
> therefor mixture..
>
> You want some light texture on the intake ports, but
> exhaust ports should
> be polished.
>
> Here are some shots from our race head. Not exactly
> a Rover, but it's what
> $1800 for headwork will get you...
> http://www.gvii.net/dlralt/OTC/OTC_head4.jpg
> http://www.gvii.net/dlralt/OTC/OTC_exhaust_port.jpg
>
> Keith
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