MG
The Classic Marque

Paul's suggestions are simply different methods of swapping the wires over---I doubt very much that flashing it will do anything.apart from giving the needle a workout.
Maybe the terminals can be swapped over inside the gauge itself but I doubt that as well.
Looks like I'm pulling one apart just to see.
Has this gauge always read back'ds or only since something(what) happened----There mus...

I've got a 34B Jacobs chuck sitting in front of me and that has a 5/8"-16 mounting thread. These days that would be called UNS but it's likely that thread usage predates the Unified Thread standard and Jacobs chose it and stuck with it to maintain consistency.

hmmm--always thought those temp gauge fitting threads were 3/8 BSP Straight which is 19tpi but if it's 18 then yes unf
Interesting one that crank bolt Paul, I had to block off the bypass hose fitting hole on a head once for pressure testing and a crank bolt screwed straight in there as well

willy

Well you know what they say.

Read the book, seen the film, got the ----

Gary
Due to health issues, i haven't done too much on my car recently so haven't used Moss or anyone else. But I would say when ever i used Brown & Gammons in the past, it was always a good service, so hopefully you will be in good hands now

5/8 x 18 is normal unfortunately, so should be easy to replace. However, although logically it would be the same as the temp fitting in the head, I wouldn't write off 5/8 x 16, as BMC used this in the odd application - most notably the front of the crankshaft. I think the bypass fitting may be another.
So whichever you opt for try it carefully first.
If it turns out to be 16 tpi then you c...

I might add that the goal is to have the cable under a bit of tension, but not enough to cause the switch to engage. This way you pull the minimum amount when you do try to engage the starter switch. It may take a bit of experimenting. I am sure the factory and period repair folks had this down pat.

Thanks for all the help on this matter & especially the link to the threaded plug and sealing washer which have now been ordered.
Regards.

Hi Chris, never thought of the bicycle cable cutters and solder. Getting rid of the slack that way should do the trick. Thanks, Bud.

No, it’s just a hollow plug.