Water Pump

[JFP in PA]

Originally Posted by pk2

We have the most stringent emissions standards in the land...might not fly.

A lot of states have stringent emissions standards, mine included; and as we have about a dozen or so clients running around with the 160 stats, and passing state emissions testing, I don’t see an issue.

But, the point made here several times is you want your coolant cooler so the oil is cooler. Well, they don't seem so directly related. Obviously my oil temps of 188f (assuming good methodology) are lower then the 210 every body is talking about & the oil has it's own cooler (no?). So again, begs the question,Forget the water, How hot should your oil be?

Actually, they are directly related due the oil/water oil cooler used on the M96 design. In fact, one of the best “bang for the buck” upgrades on a 2.5/2.7 base car is to install the “S” cooler because it is more than twice the size of the base unit. With the coolant running 210-215 normally, the oil is going to be 25-35 degrees warmer under cruise usage (not to mention how hot it gets under load or in high ambient temps); drop the coolant temp 20-25 degrees, and the oil comes down with it…………..a major gain for the oil and life of the M96.


BTW; In my BMW3.0 coup days, we used to just drill holes around the perimeter of the thermostat. They were really accessible so trial an error was easy.

The M96 stat already has a hole in it………..