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@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
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation $12.75
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
>
> Healeys@autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage:
> http://autox.team.net/mailman/options/healeys/healey.nut@gmail.com
_______________________________________________
Archive: http://www.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
|