Quote:
Originally Posted by radz28
I believe the tranny fluid (which is also the rear differential fluid coolant) also goes through the engine coolant radiator (as does the engine oil for the engine oil cooler). It seems to me the engine coolant temperature goes up, and starts saturating the engine and tranny oil coolers (in opposite radiator end tanks of the primary engine coolant radiator), then pushing those respective fluid temperatures higher, and gets to the point all of those heat exchangers are out of heat rejection capacity. Then - all of those temperatures go out of control.
I am not the one that seemed to have solved this. Member TravisLambert seemed to have solved this by substituting the auxillary blower heat exchanger with a dedicated engine oil cooler (C&R, I think). He left the OEM engine oil cooler (off the side of the oil pan) in-line (and think he was going to divorce it completely later and see if there was further improvement in temperatures), and did have upgraded blower/engine/auxillary engine heat exchangers (which his data showed almost no improvement) but after removing the engine oil load, all temperatures in that cooling circuit dropped considerably, and he observed no ill side effects of track use. He's got a big thread on it. I think he was mod'd with a 2650, and is an M6, so it's a little different, but might be useful. I didn't notice mod's but that could play a factor, too, if so.
OP: I hope you find the solution  |
I did something similar, but worked extremely well. Instead of replacing the aux supercharger heat exchanger, I replaced the aux radiator with the C&R oil cooler. I did however, remove the factory oil "cooler" (heater). After doing this, I actually saw lower engine coolant temperature and lower oil temperature on track. Deleting the OEM oil cooler reduced coolant temperature so much that the secondary radiator is no longer needed. Plus, you still get to keep the aux supercharger HX, which is very much needed.