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Message
I see several possible advantages to the dual pump setup.
Maybe I can turn one off for curise which would save current
draw.
That's actually a
good plan. My current system runs pretty cold (<140F) in cruise, and
that was in the summer. I'm afraid it's going to be too cold in the
winter. It would be nice to be able to shut off half the
system. You could set the second one up on a thermostat, so it comes on
automatically when needed. I'd use the temp sender located near
the oil inlet on the rear housing to trigger it, because with no flow
when the primary pump fails, this will get hot quickly, and activate your second
pump.
As for current draw, it
won't matter as long as the alternator is running. In an emergency, you'll
likely be powering back, and starting to descent from cruise altitude, which
will reduce the need for cooling anyway. I'm betting that will make half a
cooling system perfectly adequate.
Cheers,
Rusty (must stop
thinking about this...)
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