Engine Compartment Heat Reduction
Thread Starter
Instructor
Joined: Feb 2011
Posts: 234
Likes: 15
Engine Compartment Heat Reduction
Hi All,
Does anyone have any suggestions or experience on how to reduce the heat in a stock engine compartment? I notice the extra heat compared to cars of equal time.
I have installed aluminum radiator, and new water pump. This helped but there must be a way to cool down the engine compartment more. Any suggestions?
Thanks.
Does anyone have any suggestions or experience on how to reduce the heat in a stock engine compartment? I notice the extra heat compared to cars of equal time.
I have installed aluminum radiator, and new water pump. This helped but there must be a way to cool down the engine compartment more. Any suggestions?
Thanks.
Le Mans Master
Joined: Jul 2000
Posts: 6,663
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From: columbia city in
Melting Slicks
Joined: May 2011
Posts: 2,753
Likes: 119
From: Springfield Missouri
stock exhaust??/ Headers might cool it down some. Is the heat coming into the interior?? If so then it might be a hole in the firewall or need insulation under the carpet and on the firewall. There are several posts here about insulating the under carpet area.
Thread Starter
Instructor
Joined: Feb 2011
Posts: 234
Likes: 15
Engine never goes to 200 degrees. Allways stays at 180 degrees no matter what the temp outside is, even days over 100. No headers all stock. I just think that kind of heat can't be good. The interior is cool but engine compartment is hot. This can't be the normal for a car. Was all ways tought that heat is bad for a car, the cooler the better.
Burning Brakes
Joined: Feb 2011
Posts: 849
Likes: 0
From: Woodland California
I got out of my 75 tonight and I could feel the heat pour out from under neath the car.
From what I've gathered the side vents are for show only.
It would be nice if they actually drew the hot air out of the engine compartment.
I've seen where hood vents were added and they were suppose to make a big difference in removing air from under the hood through the top instead of allowing the hot air underneath the car.
This is something I would invest in a heart beat.
First it would not allow hot air to build up.
And it would keep air from getting under the car.
This would make it more stable at high speed, say 120mph or more.
Ralph
Melting Slicks
Joined: Jan 2003
Posts: 2,712
Likes: 31
From: Shreveport LA
LA Events Coordinator
I would have to disagree with you about the side vents. They are functional and they vent the heat out of the engine bay. I, too, have a 75 and when I'm driving down the road and place my hand down the side of the door, I can feel the heat coming from the vent. Also, when I stop, you can feel the heat escaping from the vents.
I also raise the hood when I get home to let the heat out and help the engine bay cool off.
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Burning Brakes
Joined: Feb 2011
Posts: 849
Likes: 0
From: Woodland California
I would have to disagree with you about the side vents. They are functional and they vent the heat out of the engine bay. I, too, have a 75 and when I'm driving down the road and place my hand down the side of the door, I can feel the heat coming from the vent. Also, when I stop, you can feel the heat escaping from the vents.
I also raise the hood when I get home to let the heat out and help the engine bay cool off.
I also raise the hood when I get home to let the heat out and help the engine bay cool off.
The yarn by the vents get little to no action.
Vetteguy75
" I'm driving down the road and place my hand down the side of the door, I can feel the heat coming from the vent."
How do you know it's coming out the vent and not just rolling up from under the car?
My hand doesn't reach all the way to the vent so I can't tell for sure.
Ralph
Team Owner
Joined: Jun 2000
Posts: 38,923
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From: Southbound
Cruise-In II Veteran
4th Gear
Joined: Jul 2012
Posts: 4
Likes: 1
Hi All,
Does anyone have any suggestions or experience on how to reduce the heat in a stock engine compartment? I notice the extra heat compared to cars of equal time.
I have installed aluminum radiator, and new water pump. This helped but there must be a way to cool down the engine compartment more. Any suggestions?
Thanks.
Does anyone have any suggestions or experience on how to reduce the heat in a stock engine compartment? I notice the extra heat compared to cars of equal time.
I have installed aluminum radiator, and new water pump. This helped but there must be a way to cool down the engine compartment more. Any suggestions?
Thanks.
Melting Slicks
Joined: Mar 2008
Posts: 2,023
Likes: 6
From: Austin Tx
Engine never goes to 200 degrees. Allways stays at 180 degrees no matter what the temp outside is, even days over 100. No headers all stock. I just think that kind of heat can't be good. The interior is cool but engine compartment is hot. This can't be the normal for a car. Was all ways tought that heat is bad for a car, the cooler the better.
If you are comparing the engine bay of your Corvette to the engine bay of a more modern car, and are concerned that it seems hotter, don't be, because it's not. A more modern engine runs just as hot (it has too, otherwise the internals would wear out much faster), but modern engine bays are jam packed full of components. Since the engine bay of your Corvette is realtively open, the heat from the engine will radiate out and heat up everything in the engine bay. But the newer car engine is completely surrounded by other engine components, and these will soak up engine heat, so it will not radiate as much to the outer edges of the engine bay.
Had a 1976 L-82, 4-sp
Joined: Mar 2011
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From: Some days your the dog and some days your the hydrant.
Royal Canadian Navy
I've seen photos where they have taped yarn to the side of the car and in the vents.
The yarn by the vents get little to no action.
Vetteguy75
" I'm driving down the road and place my hand down the side of the door, I can feel the heat coming from the vent."
How do you know it's coming out the vent and not just rolling up from under the car?
My hand doesn't reach all the way to the vent so I can't tell for sure.
Ralph
The yarn by the vents get little to no action.
Vetteguy75
" I'm driving down the road and place my hand down the side of the door, I can feel the heat coming from the vent."
How do you know it's coming out the vent and not just rolling up from under the car?
My hand doesn't reach all the way to the vent so I can't tell for sure.
Ralph
Burning Brakes
Joined: Feb 2011
Posts: 849
Likes: 0
From: Woodland California
But there should be a way to get the side vents to work better.
I think mashman has a good point.
Newer cars have smaller a engine space.
Less heat can be trapped because there is no place for it to hide.
Let me think on this for awhile.
Ralph
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,114
From: Crossville TN
There is a very good way to get the side vents working efficiently. Drive the car! Airflow down the side of the vehicle causes the air in the engine compartment to get 'sucked' out the side vent area [commonly known as the Bernoulli principle]. If the car isn't moving, that can't happen. That's just the way it is....
http://en.wikipedia.org/wiki/Bernoulli's_principle
http://en.wikipedia.org/wiki/Bernoulli's_principle
Last edited by 7T1vette; Jul 16, 2012 at 02:18 PM.
Burning Brakes
Joined: Feb 2011
Posts: 849
Likes: 0
From: Woodland California
There is a very good way to get the side vents working efficiently. Drive the car! Airflow down the side of the vehicle causes the air in the engine compartment to get 'sucked' out the side vent area [commonly known as the Bernoulli principle]. If the car isn't moving, that can't happen. That's just the way it is....
http://en.wikipedia.org/wiki/Bernoulli's_principle
http://en.wikipedia.org/wiki/Bernoulli's_principle
The yarn by the vents get little to no action.
Ralph
Instructor
Joined: Oct 2010
Posts: 112
Likes: 0
Have you considered adding a fan in the area of the vents. If you are feeling the heat around the door area, it might be the weatherstripping. area two would be the weather stripping around the hood and the seals around the heater core.
I do know of some owners who mounted dual fans on the bottom of engine compartment using the frame as a mounting point, don't know if it helped or not.
Ron
I do know of some owners who mounted dual fans on the bottom of engine compartment using the frame as a mounting point, don't know if it helped or not.
Ron
Burning Brakes
Joined: Jun 2003
Posts: 1,079
Likes: 1
From: Niagara Falls ON
They all get hot. Drive them to allow the airflow to do what it is supposed to do.
The side vents do allow air to flow through...just watch a car on a hot day and you can see how the heat is affecting the air as it comes out.
If heat was so bad for these cars then there wouldn't be many around for us to buy, collect, and discuss these issues. I am sure that a Duesenberg engine runs hot but the owners don't worry because that is what internal combustion engines do.
My 2 cents.
The side vents do allow air to flow through...just watch a car on a hot day and you can see how the heat is affecting the air as it comes out.
If heat was so bad for these cars then there wouldn't be many around for us to buy, collect, and discuss these issues. I am sure that a Duesenberg engine runs hot but the owners don't worry because that is what internal combustion engines do.
My 2 cents.