Quote:
Originally Posted by brucepick
I'm sure the oem electric water pump systems are computer controlled.
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While this may be true, the mechanical pump is always pumping, and i'm sure you always want some flow as there could be "hot spots" in the head or block. So with a little electrical work, you could control the pump to always run on low, and then run on high setting when you read a certain coolant temp, head temp, ect. The radiator fan and thermostat will operate like they normally would.
So there could be some gains, but i'm wondering how much. I'll try to read up on some racing sites to see if they do a back to back dyno comparison. You want me to post that back here, or start a new thread? I don't want to muddy your EPES project info.
EDIT*** From the quick reading I did for a race b16 engine making 250 horse they saw a 4hp gain, or only 1.6%, however, this is 1.6% on an already highly efficient HP engine when squeezing any kind of power out is tough to do. So for an economy car the % could be a ton. I also read from
http://www.vetteweb.com/tech/vemp_08...s/viewall.html they saw a 10.5hp gain or 2.17% of the ending 482horse vette engine.