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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

is thermostat essential?

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Old May 23, 2004 | 01:17 PM
  #16  
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c_rossman
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You need the restriction to increase PSI inside the block to prevent cavitation. The increased psi in the block brings up the boiling point of the coolant thus preventing hot spots.
 
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Old May 24, 2004 | 04:48 PM
  #17  
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EPNCSU2006
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From: Concord, NC
^ not to mention heat transfer principles. The water absorbes and dissipates more heat the longer it stays in the engine and in the radiator. If no thermostat is present, the water moves too fast to transfer the proper amount of heat, and is inefficient.
 
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