Cooling Question

[Hog]

Originally Posted by Dynomite

That is the pressure required to push the Coolant through the engine block and Radiator (and associated hoses including the Thermostat). That is a Hydraulic term describing the pressure required to push fluid through a pipe. The more pressure you apply the greater the fluid flow.

Or if you google Head Loss To move a given volume of liquid through a pipe requires a certain amount of energy. An energy or pressure difference must exist to cause the liquid to move. A portion of that energy is lost to the resistance to flow. This resistance to flow is called head loss due to friction.

The First set of Calculations is for The Pressure Drop in Oil Lines and is a bit complex but the same calcluations can be done with Coolant Flow. In the Second set of Calculations below we already know the flow characteristics of the Coolant Pump and Marc suggested the block resistance at 100 gpm is approximately 20 psi (which is the Head Loss at 100 gpm Coolant Flow) ...so a lot simpler as we really do not need the pressure drop unless we want to calculate flow rates (which we already have by measurements). In Marc's suggestion above the Head Loss is 20 psi.

Tech Info - LT5 Pressure Drop In Oil Lines Calculations
Tech Info - LT5 Coolant Flow Calculations

Thanks, I didn't want to appear critical in case it was a typo.

Looks like increasing w/p speed is the "correct" way to tackle this. The 1st world issues that we have. The ZF trans combined with high rear gears, coupled with a high rpm LT5 all combine to give us non-optimal off idle cooling.