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
temp dropped
I was able to see how accurate the Jaeger guage was. I was suprised, only right
at the
low en did a discrepancy creek in. My gauge doesn't look particularly
reconditioned!
As for oil pressure gauges. The manuals and restoration guide for MGA give
20-30 PSI
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,
vibration
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
pressure
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
it?
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
over here.
It is just an idea!
Any one with a spare or suspect guage might have a go!
/Steve
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