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TR2/3/3A TR3A Vaccum line for Distributor

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houleyh

Senior Member
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Hi,

I am trying to connect a copper line from the bottom of the front carb. What is the thread size? 1/8 BSPP?

Where can I get such a connector?

Thanks
 
I don't know the thread size offhand, but ISTR it was a Whitworth thread.

Both Moss & TRF have the union listed as available, although you should probably be sitting down when you see the price. Moss 371-100, TRF SUAUC4490
 
Aloha Yvan,

I recently fabricated a vacuum line for my TR3. I used 1/8 inch compression nuts and olives and 1/8 inch copper tubing. The thread size for the compression nut is 5/16 - 24 UNF. The nuts went on the carburetor and vacuum advance without a problem.
 
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