In connection with my overheating problem I took my water temp gauge
out to test it in boiling water. Sure enought it was bang on 212 F as the water
in the kettle
boiled. I then got a cooking thermometer (don't tell 'her in doors'). As the
I was able to see how accurate the Jaeger guage was. I was suprised, only right
low en did a discrepancy creek in. My gauge doesn't look particularly
As for oil pressure gauges. The manuals and restoration guide for MGA give
as acceptable for idle and 50-60 as normal for running pressure. Mine is bang on
so I don't worry.
It is probably different for various LBC cars.
Just remember the guages are old. They are in a very inhospitable climate,
heat, damp, etc.
Testing the water guage is easy!
Anybody any ideas on how to test an oil pressure
guage without blowing it's mind. A 70psi pressure liquid is at 2.8 times the
of a car tyre (air). The guage goes up to well over 100psi if I remember.
Could one connect up an air compressor to force say oil into the guage to check
Of course the air compressor guage is cheap and nasty as well so it might be a
waste of time!
I have not done this and am not planning to do so. Jaeger guages are too rare
It is just an idea!
Any one with a spare or suspect guage might have a go!