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Stewart Components Tech Tips |
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Tech Tip #1 - Water Pumps &
Pulleys
"In order to increase your cooling system's performance
you must maximize both the WATER flow and AIR flow."
Water Pumps
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There
are significant differences between a stock or OEM
water pump, and Stewart Components water pumps. Most
stock or OEM pumps are built to meet standard
performance requirements at relatively low RPM.
Stewart pumps are designed and manufactured
specifically for high performance applications. |
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Every pump is designed to
exacting tolerances for reliable, long-term performance
that meets the requirements for your application.
In addition, all Stewart high-flow water pumps are
designed to deliver maximum flow with minimum power
consumption. Stewart high-flow water pumps deliver up to
180 GPM (gallons per minute) of coolant flow (at 8,000
RPM), yet consume just 2.26 horsepower (at 4,000 RPM)!
Pulleys
Using the
proper pulley and drive system is critical to matching
the water pump's performance to your specific
application.
RACE applications require a maximum water
pump speed of 7000 RPM. For
STREET applications, the
water pump speed must at least match crankshaft RPM, to
a maximum recommended 25% faster than crankshaft speed.
Stewart Components does NOT recommend the use of
underdrive pulleys on any STREET application. Stewart high-flow
water pumps only consume 2.26 horsepower at 4,000 RPM,
so the actual savings in parasitic horsepower loss
through the use of underdrive pulleys is minimal. In
addition, a properly designed cooling system's flow and
efficiency are designed to operate at a given speed. In
years of testing, Stewart has consistently proven that
the engine will lose more horsepower due to higher
operating temperatures than any possible gain from
underdrive pulleys.
Next Tech Tip -
Radiator Caps |
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©2004 Stewart Components. All rights reserved. |
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