How about using a 170 T-stat also to keep things cooler than the stock 185 deg. Some said not to use it but I cant understand the reasoning behind this as I've always ran a cooler T-stat in all my other cars with good results.
Any toughts on this? with or without the Mopar PCM ?
Silver,
I run the 170 T-stat in my ACR along with the close out panel and a spring in the upper radiator hose. This combination really helps keep the engine cooler on the track. I also run the Mopar Race controller on the track. Track temps run about 205 coolant, 215 oil on warm days 85 - 95 F, pressing on it. It can run a bit warmer on slower tracks.
I've run into only one issue. On the street, even here in So Cal, on a cold night or cold morning, say 40 F or so, an extended run on the Freeway in 6th gear will lower the engine coolant temp to 155 - 160 ish. This can cause a check engine light and put the engine into limp mode. I simply stop, turn the engine off, restart the engine and the limp mode goes away - check engine light stays on.
If you go with a 170 T stat, you many want to run in 5th gear or run the A/C or both during cooler days to avoid this issue.
Dan
