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Thermostat Test Question???? (archive)

[ Follow Ups ] [ 7-series (E32) Message Board ] [ Msg. Board FAQ ]

Posted by Slash on December 28, 2000 at 17:16:38:

Has anyone ever boil tested one of these thermostats before? When I boil mine, by 150 degrees (f.) it is allready open about 1/4 inch. By 190 it's wide open. Same thing as it cools down, still open slightly at 150. My problem is that my engine is not fully warming up now that winter is upon us (gauge cant even get out of the blue). I would think that thermostat should not even begin to open until at least 185-195, is that correct? Or, do they open sooner and just acheive full flow at the selected temp?
At what a thermostat for this beast costs, I hate to buy one if this one is fine.

Thank you.

1988 750il 180k
1992 3000GT VR4 77k

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