kitcarbp
Thu March 19, 2009 10:30am
Rating: 10
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500+ HP Engine Water Jacket Coolant Flow Requirements
This chart shows the linear relationship between the heat rejection (load) of the coolant and the required (calculated) coolant flow in the engine water jacket. It is determined for 3 different temp gradients of the engine inlet and outlet coolant temp. This engine example is from a 500+ horsepower supercharged gas engine assumed to have heat rejection up to maximum power (8,000 btu/min). Why do we care? If you cant keep engine temps under control at speed under load, you may have: 1) insufficient water flow, 2) undersized radiator, or 3) insufficient air flow through the radiator that needs to be addressed. This engine will require coolant flow in the lower part of the curve in street applications (low heat rejection), but for racing/track use this engine will require coolant flow rates towards the top of each curve. For older V8's pre-emissions, the common design target is to keep the radiator Inlet @ 190 F and outlet @ 180F or an average core temp of 185F at steady state conditions or the upper curve shown. Modern engines may use a little higher 195F-185F or rad core avg temp of 190F.
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Gatorac
Fri April 10, 2009 6:44am
Rating: 10
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Gatorac
Fri April 10, 2009 6:44am
Rating: 10
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RedSnake351
Tue May 26, 2009 9:47pm
Rating: 10
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Arizona Or Bust
On the way to AZ Sep 2008. Will need more towing power on the way back.
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DocDirk
Fri June 19, 2009 9:49pm
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Arizona Touring
Along old 66 heading towards Seligman
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cay5628
Sat November 14, 2009 10:27am
Rating: 10
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Left Rear View
Left rear looking toward front of chassis. Using a quick time bell housing and centerforce clutch with hydraulic slave for release.
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CSX 4039
Tue March 16, 2010 10:01pm
Rating: 10
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Perhaps The World's Greatest Tow Car?
Which is cooler?
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krausewich
Sat July 10, 2010 7:22am
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Front shock towers and tabs installed.
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krausewich
Sat July 10, 2010 7:22am
Rating: 10
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Full Monty of the shock towers !
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hodson
Sun July 11, 2010 3:24am
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Townsville 400
cobra's on display
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hodson
Sun July 11, 2010 3:24am
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Townsville 400
Cobra's driving grid girls around track prior to main race
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hodson
Sun July 11, 2010 3:24am
Rating: 10
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Townsville 400
Cobra's driving grid girls around track prior to main race
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tomcat racing
Mon July 12, 2010 6:18am
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tomcat racing
Mon July 12, 2010 6:18am
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tomcat racing
Mon July 12, 2010 6:18am
Rating: 10
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