Radiator flow restrictor
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Joined: Jul 2006
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From: atlanta-ish
Stock is 190.4. The "hot" aftermarket one I found is 192° 
Typically AM does not have the sub thermo and warm the car up slower, even if they will maintain a higher temp. Which is OK for the application I suppose.
Typically AM does not have the sub thermo and warm the car up slower, even if they will maintain a higher temp. Which is OK for the application I suppose.
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Heat capacity is largely a function of temperature, not pressure. So changes in pressure will have very negligible effects.
Running more anitfreeze and less water will reduce the heat capacity of the coolant.
EDIT: From thermo 1 book, enthalpy for water
at 100*C @ 10kPa = 2687.46 kJ/kg
at 100*C @ 50kPa = 2682.52 kJ/kg
For a loss, of 0.0018%. Tiny, and pressure hurts heat capacity, not helps it.
Running more anitfreeze and less water will reduce the heat capacity of the coolant.
EDIT: From thermo 1 book, enthalpy for water
at 100*C @ 10kPa = 2687.46 kJ/kg
at 100*C @ 50kPa = 2682.52 kJ/kg
For a loss, of 0.0018%. Tiny, and pressure hurts heat capacity, not helps it.
Last edited by patsmx5; Oct 31, 2008 at 12:54 PM.
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Joined: Jun 2005
Posts: 19,338
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From: Fake Virginia
see joe perez' video.
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not a good idea to block water flow from the lower radiator hose. There is a reason upper radiator hoses are smaller than the bottom hoses. By placing a plate in the lower radiator hose the pump builds pressure all the way up through the radiator which causes you to dump water out the radiator cap during high rpm. Upper hoses are smaller so the pressure is in the motor and the pump sucks from the radiator avoiding the above mentioned problem. The pressure were talking about here is not pressure from heat, its the current pressure from the pump.
Yeah uh... about that. I don't know what car you are talking about but the inlet and outlet of my radiators are both 1.25".
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Joined: Jun 2006
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From: Republic of Dallas
actually, the water neck from the rad to the pump is the bottleneck of the system in our cars. However, I also discovered that this lower pipe follows the required shape for a coolant reroute, so I'm using it for a hard-pipe instead of the rubber ****.
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