Hi Donald
I don't know for sure but there is a possibility it is BS Brass this I think
has 26 (could be 27 or 28) TPI regardless of diameter.
Graham.
----- Original Message -----
From: Donald H. Locker <dhl@chelseamsl.com>
To: <spitfires@autox.team.net>; <triumphs@autox.team.net>
Sent: Friday, March 10, 2000 3:00 AM
Subject: SU float valve thread
>
> Hi, all.
>
> Anyone know (off hand or by any other method) what the thread spec is
> for the float valve of the SU H2 (or HS2) carbs? I think one of my
> needle valves is leaking around the threads and I want to check the
> thread in the lid before attempting to replace the valve. I don't
> want to try to tighten it without being sure it's not buggered (sorry
> to be so crude, but that's what it looks like from here.) It seems
> to be nearly 1/4-28 or perhaps 6mm-1.0, but not quite either. Another
> British spec thread?
>
> Thanks,
> Donald.
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