[rjr89]

Greetings,

Of course, I will always attempt to search first, ask questions second... but I must now request help from the experts regarding originality as it left the factory:

Vehicle: '66 US version Duetto S1

Was OLIO cap cadmium or stainless?

What is the correct number of ears, color, pressure rating and verbiage for radiator/expansion cap?

Thanks in advance.

 

[Andrew]

Oil cap not stainless. Seems to me they were zinc colored in period, not gold cadmium.
Radiator cap, I looked in the R&T test from July 66, it's a rounded, two-ear cap, rivet in the center, stamped-in writing if any, no sticker no it. GTV and Super tests from 67 and 68 show the same cap.
I don't recall yellow cad on anything on these 105 cars then, I think zinc color again. I don't think cad came in til the late 2000s.
Andrew

 

[Wille R.]

Oil cap not stainless. Seems to me they were zinc colored in period, not gold cadmium.
Radiator cap, I looked in the R&T test from July 66, it's a rounded, two-ear cap, rivet in the center, stamped-in writing if any, no sticker no it. GTV and Super tests from 67 and 68 show the same cap.
I don't recall yellow cad on anything on these 105 cars then, I think zinc color again. I don't think cad came in til the late 2000s.
Andrew

Yes, easy to polish and it will be quite glossy too.

 

[ossodiseppia]

There has been much debate about original finigh on fasteners, how clamps and other bits.

Zinc comes in two "colors", clear and yellow. Original hose clamps were finished in yellow zinc.