Shave the water pump

[euromodder]

Originally Posted by pounsfos

wtf, can someone get rid of this guy please,

His posting - and account I'd wager - are gone, but you quoting him is still here.

Use the triangular warning icon on the lower left of the posting to report it to the admins.

Don't quote spam !
Please edit your posting and remove the spam.

[Big Dave]

Reducing parasitic load has its virtues, but rather than haggling up an expensive water pump, underdriving makes more sense.

Of course I went at it the other way. With my numerically low gear ratios, my engine speed is down 35% at a given road speed so my water pump (and alternator, and A/C compressor, and power steering pump, etc) turn at a 35% lower RPM, drawing (pump and fan HP goes up with cube of RPM) 72% less parasitic HP loss. I’ve run this way for several years and had no problems with the auxiliary systems.

Reducing engine RPM works wonders for MPG.

[oil pan 4]

I found not having the fan not turn at all when its not needed works best.