If i leave 2 connected to 12vdc continuously the pump runs at high speed.
Bmw electric water pump flow rate.
How have bmw overcome the weakness in the electric water pump flow for the 300bhp 335i motor or are they not expecting people to be thrashing it flat out untill it s out of warranty.
Advantages of electric water pumps.
The pump pressure or differential pressure expresses the resistance of which the pump has to work against.
The best benefit for aftermarket and motorsport application would be the freedom of installation and use.
I am using a bmw electric water pump on my hot rod.
12vdc to 4 wire.
This knot also isn t without oddities.
Pump pressure is not the same as the system pressure.
150l min 0 85bar 220l min 0 55bar protection.
Older ones use pump with 480w power for newer engines the power of it reaches 700w.
If i hold a 12vdc to 2 connector wire for 3 seconds and release it the pump runs at a slow speed.
I connected 12vdc to 1 wire.
Product range application.
Those pumps can of course be used in normal automotive cooling systems with system pressures in the range of 0 8 to 1 2 bar for instance.
Petrol engines of n series uses electric water pump.