Lotus Elan

Correct oil/water gauge for Us S3

PostPost by: jhogne » Fri Sep 25, 2015 1:57 am

Picked up a bit of a project and it was unfortunately the "parts car" for the previous owner. With that, several parts are completely missing, one of them being the dual gauge. I have seen several different options and would like to get the correct one. 100psi/230F smiths 2". 60psi/110C smiths 2" with illumination hole for bulb in back. Several gauges I have are illuminated with a bulb in the side. Is there another option with 60psi/230F that I haven't seen yet? Any suggestions would be appreciated looking to buy the right one the first time.
Car is 67 Elan coupe airflow pre super safety. I think it is an SE.

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PostPost by: fatboyoz » Fri Sep 25, 2015 4:53 am

My early S4 has the 60 psi/110 degrees C gauge with rear entry lightbulb.
'68 S4 DHC
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PostPost by: gherlt » Fri Sep 25, 2015 5:39 pm

As far as I know (other do more) there are two pressure combinations
60 and 100 psi, the later is needed if you have a high pressure oil pump,
but I don't think that this was a standard factory option.... maybe on race cars ?!
So standard pressure is 60 for sure.

230F or 110C is a question of the units you use in your country, in Europe UK has Fahrenheit,
the continent had Celsius. I would (intuitively) say that the US had Fahrenheit.

Just my thoughts...
1964 S1 (engine ready, awainting body paint)
1967 S3 DHC (now adjusted by Brian Buckland, totally calm idle)
1969 S4 FHC (final interior stuff)
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PostPost by: StressCraxx » Sat Sep 26, 2015 3:38 am

The one in my Elan was a Smiths model GD1500/74

0-100 PSIG
30 to 100c temp
Lighted from the side.
The "74" denoted the length of the capillary tube.

My car is a very late S3 DHC/SS
There is no cure for Lotus, only treatment.
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PostPost by: RichardHawkins » Sat Sep 26, 2015 3:38 pm


I don't know what is correct, but my car (1968 S4) as I bought it had Farenheight and psi. A friend with more knowledge said it should be Celsius and psi. I exchanged my gauge for Celsius.

At about the time my car was built Britain was moving to the Celsius scale, so I assume the earlier cars were Farenheight and the later Celsius.

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