Brent C Posted June 20, 2023 Report Share Posted June 20, 2023 Hi Any body know what the thread for the tapped hole on the manifolds, used for vacuum take off points is. My thoughts were that it would be 3/8” NPT, but the diameter is wrong, same for BSP. Is it Metric? Any ideas greatly appreciated. Brent Quote Link to post Share on other sites
Drewmotty Posted June 20, 2023 Report Share Posted June 20, 2023 I seem to remember that it’s unf Quote Link to post Share on other sites
elclem1 Posted June 20, 2023 Report Share Posted June 20, 2023 7/16 unf ? Quote Link to post Share on other sites
Mike C Posted June 20, 2023 Report Share Posted June 20, 2023 Most TR6 thread sizes are listed in the front of the Brown Book, Quote Link to post Share on other sites
Brent C Posted June 22, 2023 Author Report Share Posted June 22, 2023 Hi Thanks for your replies. The new plug arrived to-day and is fitted. for referance it is 5/8" UNF Brent Quote Link to post Share on other sites
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