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Thermostat choice...cooler...better...?? 200 1990

posted by  jorn on  Wed Mar 19 00:07 CST 2003
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I believe the confusion comes from the fact that European pre 1991 carb engines run with a stock 87 deg thermostat. Only after 1991 you're suppose to up it to 92.

In the volvo Program 87 is very much a standard for NA engines. In fact 92 for 200 is unusual. I noticed in my 1992, the temp was always above mid, checked it all out, even measured the temp and all was fine at 92 deg. Popped in a 87 thermostat and gauge dropped to horizontal. Checked out the temp comp board out - not fitted!

My final conclusion is the instrument cluster is calibrated on the old 87 standard, 92 will give therefor a higher reading.

As per other replies, the hotter the better. Many modern VW's (wife's car) run on 110 high pressure cooling systems. Bad news when you open the coolant reserviour. Factory setting!

REg,

Jorn Oslo Norway





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