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I flew the SQ2000 today. The engine is running
great, now that I have a seperate water temp sender for the ECU and another for
the engine monitor. The outside air temp was 80 degrees, and I am very
disappointed with my coolant temps. The water temp hit 205 during the
climb. Temps slowly came back down to 190 once I was in level flight, and
dropped to 170 on short final. Very disappointing. (oil temps were fine).
I am going to seal all the gaps around the radiator first, and see if that
helps. I am concerned that the new ram air scoop I made to bring in cool
air to the throttlebody might be pressurizing the rear of the cowling, and
inhibiting the induction of air through the radiator. I will try sealing around
the radiator first. If that fails to bring the temps down, I will try removing
the ram air scoop and installing a NACA scoop with a hose to bring air directly
to the throttlebody, and not dump it into the low pressure area of the
cowling. If that fails, I think I will take up fishing or
golf.
Paul Conner, 13b powered
SQ2000 in Mobile, AL
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