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MG MGB Technical - Please ID this threading

What's the threading on the water temp gauge sensor, please? 5/8-18 UNF?
Ted

Ted. The one I checked, from an 18V engine was 9/16"-18. All of the bolt sizes I have been able to measure are listed on my website--custompistols.com under the MG, then "articles". Les
Les Bengtson

5/8 UNF
Garth
Garth Bagnall

Which of you guys is right???
Ted

been fioxing MGB's & other BMC B series engines since 1970. EVERY head I have seen has had 5/8 UNF thread in the temp semsor outlet by the thermostat. Same a A series. Sometimes an extra adaptor has been fittd which is of a different thread - as per a lot of midgets.
Have even had to drill a few out because the steel nut is rusted in.
Garth
Garth Bagnall

Ted. Garth is. I went out and measured two more after reading his posting. Both measured right at .613" as their major diameter. This translates to 5/8" (.625"). Thanks, Garth, I will get that updated on the website. Les
Les Bengtson

This thread was discussed between 18/09/2002 and 23/09/2002

MG MGB Technical index

This thread is from the archive. The Live MG MGB Technical BBS is active now.