[Healeys] Union - oil gauge pipe

Bob Haskell rchaskell at earthlink.net
Sun May 29 05:57:16 MDT 2022


I'm pretty sure that it's a straight thread.  But don't have one loose 
to confirm.  If it was tapered, there'd be no need for the sealing 
washer.  Probably a British Standard Parallel Pipe thread.  Not much help.


Bob Haskell
Austin Healey 3000 BN7/BT7 registrar

On 5/28/22 9:50 PM, Harold Manifold wrote:
> Hello,
> I would like some clarification about the “Union - oil gauge pipe” 
> before I over tighten and break something. Number 56 in the picture 
> below. The threads going into the block are definitely tapered, 
> however, the Union gets tight before sealing against the washer (No. 
> 57). I don’t want to over tighten and damage the threads as I suspect 
> the threads are not a standard size. I was thinking of using two 
> copper washers and thread sealant.
> Any other suggestions?
> Harold
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