[Healeys] BN1 Head

[Alan Seigrist]

As an owner of an A90 and a spare A90 motor, I can confirm that the heads
on the 100 and A90 are identical.  The only real variation was in the early
A90, there was a different rocker & springed pushrod set up meant to
minimize valve clatter.  It was a fairly complex system and they eventually
got rid of it around 1950 for the rocker system used in the 100.  If you're
interested, I have pics of the whole set up in an album here:

http://tinyurl.com/nthg3ea



On Mon, Jul 8, 2013 at 8:12 AM, Simon Griffin <simon_grif at msn.com> wrote:

> I have been reading Bill Piggott's book about the 100 and of course there
> are
> several references to Westlake being contracted to design the head for the
> 100M.  However, is it not fair to say that Westlake designed the stock cast
> iron head on the BN1?  Or I suppose if being honest he desinged it for the
> A90, not the AH.  Poking around and photographing everything today, I note
> a
> Westlake patent number cast into the head just in front of the #1 spark
> plug.
>
> Simon
> Troy, Il
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