About ot pull the trigger on a whipple stage 2 kit. Currently in the bay area in CA but could be movng back to Houston in the future. What do you all recommend for extra cooling in either/both climates? thanks!
This is also my understanding - stop and go traffic and the staging lanes for fan value. Racing - larger intercoolers for better cooling flow all of the time. I also have a cooler. Additionally - my understanding is that when moving the fans actually block air flow. Thus I went larger IC.Get the oversized heat exchanger. I did the fans on my 18, but if I did it again I would do the oversized. You probably won't be sitting in traffic as much as you thought, and as soon as you get moving the temp will come down faster with the extra fluid capacity. Over 40mph, the fans are useless. I was going to swap mine out to the oversized, but my car got totaled.
Thats the same regardless of LTR size and is a function of the stagnant air in the manifold heating up from the surrounding metal and rotors whipping it up. As soon as you move the hot air is consumed and cooler air replaces it. This is obvious if you log MCT over a 20+ minute drive.I also went with the oversized heat exchanger. It is impressive how fast the temps drop as soon as you start moving.
I think this is valid - but I don't see the downside to a HX with double the size. Also - with fans - their value is questionable once moving (none). The blocking of air flow is also a big deal to me (by the fans themselves. I have to believe the larger HX must lower IAT's better than the smaller unit. Especially with a cooler.Here is what I'm trying to explain. This is a log from 25 minute drive, small LTR and no fans.
White is coolant temp. You can see it come up fast and stabilize once it reaches the thermostat and fan setting.
Green is speed.
Blue is IAT(1). It holds steady except when speed goes to zero/stopped.
Yellow is MCT/IAT2. MCT and IAT are scaled the same.
Observations: MCT slowly increases for the first 12-14 minutes of the drive then stabilizes at around 20 deg over ambient. WOT stints seemed to have basically no effect. Also, extended cruise at 70-80 mph didn't seem to bring it back down, causing me to doubt my earlier thought that the fans work. Yes, MCT increased when stopped/idling and dropped once moving, but what would you expect when IAT(1) also spiked up and dropped back down? In fact, the IAT2 and MCT are nearly unison during long idling.
If anyone has the big LTR or fans, I would love to see the same data.