Quote:
Originally Posted by raceyBMW
Excellent write-up!
If you did that, it would still retain the stock OC thermostat (which is built into the OEM front plate oil filter housing) and adding the other inline thermostat would be kind of silly. This would mean you have the factory one that opens at ~240°F-250°F and then oil would go downstream to the Stett 180° thermostat and already be hot. They way they did it is the correct way.
Too bad no one has simply come up with a new OC thermostat to directly replace the factory one.
BTW, does this new thermostat allow it to flow slightly at all times, or is it either open or shut?
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RaceyBMW, thanks for the kind words.
When I look at the thermostat it has a spring up top and a bar style down bottom. I am not sure if you can get flow through the spring below 180F. Maybe STETT can answer that? Judging from the shape of the warmup, it appears it does operate as stock thermostat. There warmup curve is not linear, but seems to start to level as it approaches the 180F thermostat temp.
