Houle #382
Well-Known Member
Just wondering if anyone has purchased one of these water pumps and is one better than the other
True that but if you have a heavy modded engine and you need a better cooling option then i guess that is considered broke and needs a fix lol
Gentlemen,
The pump that circulates the HIGHEST VOLUME without cavitation at the highest flowing PRESSURE for the average operating condition would be the best selection. In spite of what you have heard or have been told velocity (the faster the better) is the key to effective and efficient heat transfer in both the engine (heat gain) and radiator (heat loss). The radiator's effectiveness is directly attributable the number of fins per inch (air side), the higher the fin per inch count the better. The tubes only convey the coolant from the inlet to the outlet and only play a small part to the heat exchanger surface area. In addition, the specific heat characteristics of the coolant is an important consideration in the effectiveness of the system. Water has a specific heat characteristic of 1.0; additions will reduce this number but add the necessary corrosion inhibitors.
The Evans Coolant supporters will argue their point as to why their system is best. BUT the laws of Thermodynamics applies regarding heat transfer characteristics of automotive cooling systems. Its very likely that your next door's neighbor's brother-in-law's cousin's best buddy's friend will have a different view point.
BTW.....for my application, I use a Flowcooler pump driven at the standard crankshaft to pump sheave ratio with the 2906070 fan clutch, 7 blade fan, with a shroud and 2998956 radiator with 60/40% mix of Dexcool with a 16# cap with out over heating (185°F - 210°F) in all conditions (cruising Woodward Avenue Detroit Michigan on a 95° F day).
Just my opinion of course.
Bob Renton
I don't run Evans anymore however the best part of Evans is the no pressure. My specific engine set up did not like its op temps at 210-220 which is where the Evans put it. However I did not know about Flowkooler at the time had I known I probably would have swapped then and would expected to see the op temps around 195 at max. who knows, I am not switching back yet its too expensive vs water and additives.
I have my new flowkooler pump in hand and will be switching it out this weekend so we will see. we are still having 95+ temps here so it should be easy to tell if it helped in traffic or not. For coolant I am currently running 90% distilled water and Maddatives cool down additive. 210 is too high for my 440 I like to keep topped out at 195-200 I will be trying a different additive next summer.
KD,I have used both and it gets over 100 degrees here. I noticed no difference. They both worked well.