High IATs? Supercharged EFI no intercooler

[kuehl]

Originally Posted by Dr J

I think I will keep the water methanol setup and not use the intercooler. For my setup the only reasonable intercooler I could fit was an air/water unit.

If that works for you.

But, you will not be getting the reasonable HP gains of the boost consistently in warm weather ambient temps. Typically, what happens is you have to either reduce spark advance or run over rich AFR's, both of which reduce HP. And, running water or water with methanol is a short band aid. Because of the blower height and size it appears you do not have the ideal space for an air to air cooler the size you would dream of, but anything is better than nothing? If a smaller foot print air/water would give you lower IAT than air to air, you might want to ponder the long term benefit even with the extra complexity and weight. Just a thought.

[Dr J]

Thanks for the advice. I will monitor things as this project moves along and decide then. I already found an air/water that would fit, but am holding off to see how we do with power.

Originally Posted by kuehl

If that works for you.

But, you will not be getting the reasonable HP gains of the boost consistently in warm weather ambient temps. Typically, what happens is you have to either reduce spark advance or run over rich AFR's, both of which reduce HP. And, running water or water with methanol is a short band aid. Because of the blower height and size it appears you do not have the ideal space for an air to air cooler the size you would dream of, but anything is better than nothing? If a smaller foot print air/water would give you lower IAT than air to air, you might want to ponder the long term benefit even with the extra complexity and weight. Just a thought.

[kuehl]

Depending which AEM ECU you are using, for example, if you have the 30-71XX, you can have 2 (maybe more) temp sensors, say one ambient, one before intake or post-boost, and later when you have an intercooler, to monitor and log temps to see how much hotter things are getting than ambient, how much hotter things are getting from boost and how well your intercooler is doing.

I have this wired up along with an AEMnet Can 30-0312 gauge mounted on my steering console center, centered between tach and speedo, and I can see temps, as well as other selected items (AFR-Lambda, Boost, Temps, whatever) in real-time, and naturally, you can log it all.

Just an idea, cause its quite a PITA to remove stuff, do an engine drop, tear down cylinders to replace cracked rings (btdt 3 times, lol).