Rover P38 canister type thermostat housing assembly

adamnreeves · Post by **adamnreeves** » Sat Sep 10, 2011 10:37 am

Part number is PEM101130. I was thinking out using this in my cooling system to provide a radiator by-pass when car is warming up. Had a look at one today and see that the thermostat cannot be changed as it is bonded into the plastic housing. Question is, what temperature does the thermostat open?

SuperV8 · Post by **SuperV8** » Sat Sep 10, 2011 12:55 pm

Taken from the P38 manual:

"The thermostat is closed at temperatures below
approximately 80 °C (176 °F). When the coolant
temperature reaches between 80 to 84 °C
(176 to 183 °F) the thermostat starts to open and is
fully open at approximately 96 °C (204 °F). In this
condition the full flow of coolant is directed through the
radiator."

I used the grey housing from the freelander as It is a lower temperature, I think 86 rings a bell?

Tom.

adamnreeves · Post by **adamnreeves** » Sat Sep 10, 2011 1:01 pm

Thanks Tom I thought it might be 96 for the catalytic converter. That one is far to hot for the Westy. Currently without thermostat but before I was using the Triumph one which was 74celius. I'll have a look at the freelander one. Cheers.