The intake valves are 1-7/16" in diameter as opposed to other 1500 heads
that use 1-3/8". With the larger valves, one has to assume that the engine
is able to breathe more effectively. The exhaust valves are the same on all
1500 heads. Of course breathing entails all other components of the intake
and exhaust systems so your results may vary.
Joe C.
Sent from my HAL-9000
-----Original Message-----
From: Ashley Page [mailto:apage@prosystembrakes.com]
Sent: Saturday, September 03, 2016 4:47 AM
To: Joe Curry
Cc: don@dcphotos.com; fot@autox.team.net
Subject: Re: [Fot] Spitfire cylinder head - which is best?
How did you determine it flows better?
What valve diameter did you end up using?
Thanks!
Sent from my iPhone
> On Sep 2, 2016, at 7:35 PM, Joe Curry <spitlist@cox.net> wrote:
>
> I am using one of the early 1500 heads with the larger valves cut down for
> my small journal 1296. It breathes a lot better than the other options.
>
> Joe C.
>
> Sent from my HAL-9000
> -----Original Message-----
> From: Fot [mailto:fot-bounces@autox.team.net] On Behalf Of
don@dcphotos.com
> Sent: Friday, September 02, 2016 1:42 PM
> To: fot@autox.team.net
> Subject: [Fot] Spitfire cylinder head - which is best?
>
> Greetings,
> Somewhere, sometime ago, I read one cylinder head casting number for a
> Spitfire 1300/1500 was made of better metal than the others?
> Don't know if there is any truth to this or not and, of course, now I
can't
> find that info anywhere.
>
> Anyone here know?
>
> Don
> DON COUCH PHOTOGRAPHY
> (512)-680-3540
>
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