thermostat on engine inlet...why?
Former Vendor
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From: Lubbock Tx
Melting Slicks
Joined: Feb 2007
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From: Indian Rocks Beach FL
St. Jude Donor '08-'09-'10
Ok, I think I understand what you're saying. Coolant in the engine block is constantly circulated through the heater core whether the thermostat is open or closed. Once the coolant has come up to temp it will cause the thermostat to open allowing coolant from the radiator into the system?
I still don't understand how there can be an air gap in the radiator. It appears to me the coolant reservoir is higher than the top of the radiator?
I still don't understand how there can be an air gap in the radiator. It appears to me the coolant reservoir is higher than the top of the radiator?
Melting Slicks
Joined: Oct 2007
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From: Kinston North Carolina
If the heater core flow is blocked that is your problem. The coolant running through the heater core is what provides the thermostat with the heated coolant and causes it to open. Otherwise there is no significant coolant flow past the thermostat.
Guys, coolant flows into the engine from the lower radiator hose. It goes in through the thermostat, into the block and up. That's why there is the air bleed tube that connects to the top of the radiator from the crossover between the heads. It is the highest point on the engine and the steam/air is vented to the upper part of the radiator to prevent air pockets. Coolant flows out of the engine from the upper radiator hose opening and into the top of the radiator. Until it warms up and the thermostat opens, there is not free flow through the radiator and the thermostat gets it's water flow thanks to the heater core hoses.
Guys, coolant flows into the engine from the lower radiator hose. It goes in through the thermostat, into the block and up. That's why there is the air bleed tube that connects to the top of the radiator from the crossover between the heads. It is the highest point on the engine and the steam/air is vented to the upper part of the radiator to prevent air pockets. Coolant flows out of the engine from the upper radiator hose opening and into the top of the radiator. Until it warms up and the thermostat opens, there is not free flow through the radiator and the thermostat gets it's water flow thanks to the heater core hoses.
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St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Coolant flows through the heater core all the time. It's the air flow through the heater core that gets regulated to allow for more/less heat into the passenger compartment. There is a small electric (stepper type I believe) motor that controls the opening and closing of the air flow damper that ultimately regulates how much air flows through, so when you rotate the "Temp" **** (C60), or command more heat (CJ2), etc, the electric motor moves the damper door. Coolant flow through the heater core is not blocked.
HTH
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From: Dyer, IN
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St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Melting Slicks
Joined: Oct 2007
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From: Kinston North Carolina
Quote from first post:but I am building a factory five GTM which is based on a C5 and I am having some issues with cooling.
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Hey Lucky and Lonestar, he's building a Kit car, and the heater system on it has colant shut off on it, therefore the problem. I wanted to explain that when I ask the question in post #3. Now we're at a post count of 53. Will it ever end?
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Hey Lucky and Lonestar, he's building a Kit car, and the heater system on it has colant shut off on it, therefore the problem. I wanted to explain that when I ask the question in post #3. Now we're at a post count of 53. Will it ever end?
Team Owner
Joined: May 2001
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From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Quote from first post:but I am building a factory five GTM which is based on a C5 and I am having some issues with cooling.
------------------------------------------------------
Hey Lucky and Lonestar, he's building a Kit car, and the heater system on it has colant shut off on it, therefore the problem. I wanted to explain that when I ask the question in post #3. Now we're at a post count of 53. Will it ever end?
------------------------------------------------------
Hey Lucky and Lonestar, he's building a Kit car, and the heater system on it has colant shut off on it, therefore the problem. I wanted to explain that when I ask the question in post #3. Now we're at a post count of 53. Will it ever end?
Tech Contributor
Joined: Jan 2007
Posts: 19,470
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From: Dyer, IN
Quote from first post:but I am building a factory five GTM which is based on a C5 and I am having some issues with cooling.
------------------------------------------------------
Hey Lucky and Lonestar, he's building a Kit car, and the heater system on it has colant shut off on it, therefore the problem. I wanted to explain that when I ask the question in post #3. Now we're at a post count of 53. Will it ever end?
------------------------------------------------------
Hey Lucky and Lonestar, he's building a Kit car, and the heater system on it has colant shut off on it, therefore the problem. I wanted to explain that when I ask the question in post #3. Now we're at a post count of 53. Will it ever end?
& Coke.....
Team Owner
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From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Drifting
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From: Morgan Hill Ca.
Former Vendor
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From: Lubbock Tx
That's not what I said. Read this thread and gain an understanding of how the system is set up. The thermostat is not inline with the hot water out of the engine and to the radiator on the LSx, it is on the radiator outlet/water pump inlet.
Drifting
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From: Morgan Hill Ca.
