[Dr J]

Nice project.

I strongly agree with Tippy. Not many people talk about the increased temps with superchargers. Even in a low boost supercharger you can get intake temps above 200F. My data point comes from using a whipple twin-screw. Even at low throttle position, twin screws compress air which heats it up. So even driving gingerly you get high intake temps. The three ways to mitigate are air/air, air/water intercoolers or water/methanol injection.

I am playing now with water and water/meth injection but it uses a lot of fluid and is fairly active. I control it with the ECU so that above 124F it sprays until the air inlet temp reads below 124F. I picked that number as kind of a compromise so nothing sacred about it. I still end up using quite a bit of water so it is not practical for long trips.

The next experiment will be an air/water intercooler as I have no room in the engine bay for a reasonable air/air. The problem now is where to stick the radiator since most available fender space is used to have a working AC for Florida temps.