Duratec Thermostat - Ford part number?

[rotorwings]

I assume the thermostat in the R300D cars is a standard Ford part?

Does anyone know what the part number is?

Edited by rotorwings on Thursday 20th November 09:02

[rotorwings]

Thanks for the info.

I did some more research and have found the following:

Caterham sell an 82deg thermostat that looks identical to the burton power one (shorter connectors). The Caterham part turns out to be the thermostat used in the 2.3L engines and the Ford part number (among others) is - 1475495 Link: http://bit.ly/1r1daIs

The other thermostat that Caterham sell (with the longer connectors) turns out to have a Ford part number (again, among others) of - 1476110 This is the one that is currently fitted to my car as it turns out. Link: http://bit.ly/1xtV5Zm

I tested the operation of the thermostat from stone cold today and found that the fan does come on at the exact same time that the thermostat opens (good news), but the temp gauge only gets up to 80-82 deg before the thermostat opening and fan turning on. Once the thermostat opens, the dial goes back down to near 70deg. This process seems to continue while driving. The temp seems to constantly move between 72ish and 82ish degrees while driving.

According the specs of the thermostat, it should be opening at 90deg

Could it be that my temp gauge is under-specifying the temp?

How can I test this? Measure the incoming voltage across the terminals? What should I expect to see for what temperature?

[rotorwings]

Thanks DCL - great information as always!

Yes, when I said 'open', what I actually meant was 'flowing through the radiator'. In my case the fan seemed to come on at the exact same time as the warm coolant start to flow into the top of the radiator. Is this not how it should be? In what order should things happen?

I will order the 82c Thermostat and fit it. I take it that it will definitely fit even though it seems to be designed for the 2.3L engine?