Fred W.
We currently use Air/Water in 5 applications. We are also currently testing Air/Water systems on the e-Tec. An A/W system will ONLY be release if the testing performs within our design parameters. Our current system was not intended to have an A/W system because BRP had certain requirements for the system specific to the Race Team.
Current water pump is a Bosch pump. Be careful of the amps!
A 1.1 psi pressure drop is probably not accurate and is excessive.
Here are some of my calculations and assumption that may be helpful.
800cc E-Tec, 7000ft or 11.3psia, 34f Ambient air, 110f engine coolant returning from tunnel (from test data), Water temp on a dedicated system 32f (again from test data), 10psi, 1.88 P/R, 12.8afr, 72% compressor Efficiency, 70% intercooler efficiency, and .5 pressure drop.
No intercooler, 307cfm, T2 170f (Compressor Out), 170f Charge Temp, and 213hp at attitude not corrected.
A/W, 363cfm, T2 170f, 73f Charge Temp, and 251hp
A/W W/ engine coolant, 329cfm, T2 170f, 128f charge Temp, and 228hp
No boost A/W, charge temp 33f
No boost A/W w/ engine coolant, charge temp 87f
Max delta w/ engine coolant 41f
Max delta w/ closed loop coolant, 40f.
