It's very likely to be BSP and you'll need to contact someone like
Speedograph Richfield - details are in books about Spridgets...
In a message dated 17/10/2010 17:11:45 GMT Daylight Time,
How about Whitworth?
.bill in corvallis
[mailto:email@example.com] On Behalf Of Lester
Sent: Sunday, October 17, 2010 8:46 AM
To: Spridget List; firstname.lastname@example.org
Subject: Re: [Spridgets] Radiator temp gauge port size?
I have tried a 5/8 -18 and it goes in a few threads but lock too soon, from
what I've read this means it is likely that this is a BSP thread. Online
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