What was the original colour of the bi-metal pieces in the Air Temperature Control units?

Christopher Shallice was in touch to ask "what colour were the circular BI-metal pieces in the Air Temperature Control Units above the claws over the exhaust manifolds?"

Here we have the results of some research and checks which points to an original colour - medium to dark beige - for the bI-metal pieces.



Fellow members' recollections of the original colour of the circular bI-metal pieces in the Air Temperature Control Units - do send them to the V8 Webmaster or post them on the V8BB.

Posted: 200215

The Great British Sports Car - MGB GT & V8
Marketing brochure – Publication 2962/A

Looking at the photo of the V8 engine on page 4 of the brochure, the colour of the circular bI-metal thermostat pieces (Air Plates) is between a dark beige and a light brown. See brochure 2962/A


Concours MGBGTV8 (Teal Blue 0528)
Prepared for and exhibited in concours events

The time and effort Howard Guiney put into his detailed preparation of his concours MGBGTV8 produced a stunning car which was eventually sold. Here the bI-metal pieces are black.
Photos

Two unrestored Air Temperature Control Units
Roger Powell's photos of the unrestored Air Temperature Control Units with the sooted bI-metal pieces. You can see them on page 3 of Roger's rebuild report. Report


Two restored Air Temperature Control Units
Photos from one of Roger Powell's restoration reports as he works his way through a thorough rebuild of his MGBGTV8 in Tundra. The colour of the circular bI-metal thermostat pieces (Air Plates) is black. Photo
Victor Smith added "I have popped out into my garage and looked in a cupboard and found my two new Air Temperature Control Units there to check the colour of the Air Plate (bI-metal circular panel) and found they were bare metal finished in the original grey/silver finish with no surface covering. I recall when I first had the car back in 1978 that the top surface of the Air Plates was a relatively light beige colour and that there was some form of heat resistant layer in that beige colour. I also opened up my bonnet to look at the units on the car and found they were black but with just a trace of dark beige".