Re: Do you have a restrictor in your thermostat housing?
[Re: flatiron]
#751909
07/18/10 10:10 PM
07/18/10 10:10 PM
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Joined: Jun 2009
Posts: 438 Great Lakes Region
abodiesonly1
mopar
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mopar
Joined: Jun 2009
Posts: 438
Great Lakes Region
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Quote:
Did it seem to make a difference?
I just think by having some type of restrictor in there slows the flow enough to allow the water flowing thru the radiator to cool a bit longer.
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Re: Do you have a restrictor in your thermostat housing?
[Re: abodiesonly1]
#751910
07/19/10 09:13 AM
07/19/10 09:13 AM
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Joined: Oct 2004
Posts: 8,165 Left Coast
BobR
master
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master
Joined: Oct 2004
Posts: 8,165
Left Coast
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Quote:
Quote:
Did it seem to make a difference?
I just think by having some type of restrictor in there slows the flow enough to allow the water flowing thru the radiator to cool a bit longer.
May seem that way but that is not the case with a closed loop system. The only benefit of using a restrictor is to keep heat in the motor. You might ask yourself what a thermostat does? It opens as the coolant gets warmer thus allowing more flow. When the coolant is at it hottest temp the thermostat is wide open. So...how can using a restrictor-which impedes flow actually make your cooling system more efficient? Answer? It doesn't but there are some who will continue to hang onto this myth.
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Re: Do you have a restrictor in your thermostat housing?
[Re: BobR]
#751911
07/19/10 12:19 PM
07/19/10 12:19 PM
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Joined: Nov 2006
Posts: 1,090 north cakalaky
instigator
super stock
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super stock
Joined: Nov 2006
Posts: 1,090
north cakalaky
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The biggest reason I can see to run a restrictor would be to keep the amp draw down on the pump..a pump like this will pull more amps with more flow...wide open may electrically stress the pump motor.
65 Barracuda All aluminum Indy HEMI with some boost! COMING TO A TRACK NEAR YOU!
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Re: Do you have a restrictor in your thermostat housing?
[Re: SmokeyBurnout 67]
#751913
07/20/10 01:00 AM
07/20/10 01:00 AM
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Joined: Nov 2004
Posts: 3,517 pacific northwest
Stroker Scamp
master
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master
Joined: Nov 2004
Posts: 3,517
pacific northwest
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i run a 160 thermostat with just a 1/8" hole drilled in it, dont know if its right or wrong but it works for my set up, car hasnt got hot yet at the strip or street
footbrake N/A SB 408 Scamp 10.10 @ 132 street/strip 73 Duster 340 street strip 12.79 @ 105
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Re: Do you have a restrictor in your thermostat housing?
[Re: flatiron]
#751914
07/20/10 03:44 AM
07/20/10 03:44 AM
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Joined: Jan 2003
Posts: 10,766 Central Valley, CA.
Quicksilver440
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,766
Central Valley, CA.
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I ran a radiator shop for a few years...and fixed many a cooling problem. A restrictor does not help cooling...at best you gain nothing. Think of it this way..Unrestricted, the water will flow through the radiator more times per hour...increasing cooling. Restricted, it goes through the rad less times per hour, reducing cooling. Yeah it might spend a bit longer time in the radiator, but thats nothing compared to the water flowing through the radiator several times more per hour. Read this: http://www.stewartcomponents.com/tech_tips/Tech_Tips_3.htm
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Re: Do you have a restrictor in your thermostat housing?
[Re: Quicksilver440]
#751915
07/20/10 04:35 AM
07/20/10 04:35 AM
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Joined: Feb 2007
Posts: 6,295 U.S.
moparniac
master
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master
Joined: Feb 2007
Posts: 6,295
U.S.
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"A common misconception is that if coolant flows too quickly through the system, that it will not have time to cool properly. However the cooling system is a closed loop, so if you are keeping the coolant in the radiator longer to allow it to cool, you are also allowing it to stay in the engine longer, which increases coolant temperatures. Coolant in the engine will actually boil away from critical heat areas within the cooling system if not forced through the cooling system at a sufficiently high velocity. This situation is a common cause of so-called "hot spots", which can lead to failures."
Isnt that what a tstat does anyway ....
Mopar Performance
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