Originally Posted by ashmostro
Just noticed this comment- do you think using the factory tstat housing (without thermostat in play) and -10AN fittings on the existing housing fittings would result in significant pressure loss or flow constriction? This would not be eliminated by the design I'm currently pondering so I'm interested to hear your thoughts.
I dont think there's anything wrong with using the stock thermostat.
Keep in mind that BMW wants this engine to run hot. IMO we just need to make sure that once it gets to 250, the oil cooler is big enough to keep it from going any higher.