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Cooling testing
#2546768
09/06/18 04:36 PM
09/06/18 04:36 PM
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Joined: Mar 2004
Posts: 314 Medina, OH
dart440_72
OP
enthusiast
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OP
enthusiast
Joined: Mar 2004
Posts: 314
Medina, OH
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I just wanted to share some of the most scientific coolant testing that I am capable of. I have been chasing cooling issues for a while so I thought I would play with different restrictors, thermostat, and open system.
This is what I found:
Outside temp 75 Lower hose 137 Upper hose 98 Car holding at 186 Restrictor 3/4"
Outside temp 75 Lower hose 132 Upper hose 100 Car holding 196 Restrictor 1"
Outside temp 75 Lower hose 128 Upper hose 91 Car holding 188 180 thermostat
Outside temp 75 Lower hose 142 Upper hose 93 Car holding 197 Open system
Outside temp 75 Lower hose 131 Upper hose 92 Car holding 198 Restrictor 5/8"
72 Dart 500" low deck Indy SR heads. 10.40 @129 best so far
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Re: Cooling testing
[Re: dart440_72]
#2546783
09/06/18 04:52 PM
09/06/18 04:52 PM
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Joined: Aug 2011
Posts: 2,842 Pattison Texas
CSK
master
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master
Joined: Aug 2011
Posts: 2,842
Pattison Texas
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Why is the upper hose colder ? reverse flow ?
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
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Re: Cooling testing
[Re: dart440_72]
#2547057
09/07/18 03:33 AM
09/07/18 03:33 AM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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I have been chasing cooling issues for a while so I thought I would play with different restrictors, thermostat, and open system. what system/parts/tuning/symptoms do you have?
live every 24 hour block of time like it's your last day on earth
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Re: Cooling testing
[Re: dart440_72]
#2547077
09/07/18 09:22 AM
09/07/18 09:22 AM
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Joined: Mar 2004
Posts: 314 Medina, OH
dart440_72
OP
enthusiast
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OP
enthusiast
Joined: Mar 2004
Posts: 314
Medina, OH
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I have a griffin radiator, flowkooler pump, with a 1:1 pulley ratio. I am trying to figure out why my upper hose is cooler than my lower. I tested the pump and it is pushing water out the top hose. But I can't understand why the top hose would be cooler than the bottom
72 Dart 500" low deck Indy SR heads. 10.40 @129 best so far
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