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All I did was to verify that the coolant surrounding the intake manifold did indeed cool the air from the intake manifold adapter (turbo outlet). IIRC, at some 10 psi of boost the temp of the air dropped about 20 degrees to around 200°F. The design intent of the coolant jacketed intake manifold...

Thanks for your confidence, James! I think the compressor is also heated by radiation from the turbine, which could get red hot. A heat shield may be in order. Just thinking out loud.

I'd say it's cooled by the coolant, but I'll measure the air temp in the intake manifold adapter to be sure. It may take a while since the deuce will be in the back yard and I'm working on the brakes and wiring at the moment. The temperature would have to be measured at a boost of 10-12 psi to...

If i'm using the air density/temp/pressure calculator (below) correctly, then a 100 deg drop in air temp would be equivalent to about 2 psi of boost. http://www.stealth316.com/2-air-fuel-flow.htm