Quote:
Originally Posted by MartinLe
Are you talking about an upgraded IC pump, or another aux pump (in addition to)? With stock cooling, I am running 30 to 40 degrees above ambient on the freeway and 50+ cruising around town. I made a pull last night with 70* ambient. After sitting for a bit getting the computer situated, I started the run at 148*. By the end of the fourth gear pull, I was at 138* and it only pulled .2* timing. So, I'm thinking in 100* weather, I should be running down the freeway at around 150* or a little less. If I can drop a few degrees MAT during a roll, it shouldn't pull too much timing. I can't see any way for you guys at the strip to keep your IAT2 or MAT in check without an interchiller or at least ice.
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I am referring to an upgraded Stewart water pump for the cooling system. In my case, the stock one is no longer in line. In fact, the temps I referenced above are achieved with no heat exchangers in the car at all. That said, if I was commuting and sitting in traffic, I would certainly put the HX’s back in. I ran it like that for about 4 years and would do spirited mountain runs, drive it to the track (early on), etc.
The temps you referenced are way higher than I’ve seen with the 2650 in any scenario other than sitting still with the car running for a long period of time. A setup like I’m referencing going wide open throttle on a roll in 70* would be in the low-upper 90* area. No ice needed.