jagnut66 Posted May 27, 2021 Report Share Posted May 27, 2021 Hi, Please can someone confirm what size the thread is for the oil pressure switch, where it screws into the side of the engine block? Is it 1/8th NPT? I have found this but is it the right size for the Herald engine? https://www.ebay.co.uk/itm/273520725705 I ask as I need to replace it with an adapter like in the attached link, so I can fit an oil pressure gauge. Two gauges I always fit: Water and Oil: I prefer to see what the water temp and the oil pressure are doing, before a warning light shows in the speedo, by which time it's usually too late anyway..... Many thanks, Mike. Link to comment Share on other sites More sharing options...
Pete Lewis Posted May 27, 2021 Report Share Posted May 27, 2021 just use a TEE listed for triumphs https://rimmerbros.com/Item--i-RX1352 Pete Link to comment Share on other sites More sharing options...
Jeffds1360 Posted May 28, 2021 Report Share Posted May 28, 2021 I used this https://www.ebay.co.uk/itm/283301160575?hash=item41f610a67f:g:VNkAAOSwADxbbvdf Can take temperature too Link to comment Share on other sites More sharing options...
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