Happy new year everyone !! All the best for 2025,

little question here to update my pulley chart...

Are these spec ok for a KN and KM water pump pulley ?

KN= STD cooling, 7.08 dia and 2" deep
KM= HD cooling, 7.3 dia and 2 1/2 " deep

Thanks

 

I'm showing both of them at about 7.3" diameter, but that isn't verified. The 2" KN is for a 5.1" pump, the 2.5" KM is for a 5.6" pump.

 

So HD cooling or not, the waterpump spin at the same rpm ??
Probably the 5.6" pump deliver more gallon/minute ?

Thanks Joe