cabin heat
Team Owner
Joined: Jun 2001
Posts: 23,367
Likes: 1,061
From: Virginia USA
One of the biggest things that is missed is the foam collar that goes on top of the bell housing between it and the trans tunnel. At least it's on the SB 4 speed cars. I would think it's on all the cars. What it does is deflect the engine compartment heat from going down the tunnel. Not sure how effective it is as I don't have A/C either. Something to check.
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
Last edited by DUB; Jul 19, 2017 at 07:10 PM.
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
Keep in mind that your car was built in an era that had very poor heat barrier materials and if you are trying to get it to be comfortable like what it is like in current cars of today...you will have to upgrade the material in your car to aid in stopping the radiant heat.
Also you must check and see that firewall grommets and holes in the firewall are plugged.
Also your under hood weatherstrip seal that seals against the top of your cowl plenum area MUST be there because if it is not...hot air from the engine compartment can blow into your wiper cowl area and thus get into the car.
DUB
Also you must check and see that firewall grommets and holes in the firewall are plugged.
Also your under hood weatherstrip seal that seals against the top of your cowl plenum area MUST be there because if it is not...hot air from the engine compartment can blow into your wiper cowl area and thus get into the car.
DUB
Last edited by DUB; Jul 20, 2017 at 06:33 PM.
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Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,753
From: Charlotte NC
On the underside of your hood there should be a piece of weatherstrip that when the hood closes...it seals off the top edge of your cowl plenum.
IF you do not have this weatherstrip intact and sealing off this area....heated air form your engine compartment will get blown into the cowl area and thus get sucked into the cabin....thus resulting in more heat.
DUB
IF you do not have this weatherstrip intact and sealing off this area....heated air form your engine compartment will get blown into the cowl area and thus get sucked into the cabin....thus resulting in more heat.
DUB
Team Owner
Joined: Jun 2001
Posts: 23,367
Likes: 1,061
From: Virginia USA
On the underside of your hood there should be a piece of weatherstrip that when the hood closes...it seals off the top edge of your cowl plenum.
IF you do not have this weatherstrip intact and sealing off this area....heated air form your engine compartment will get blown into the cowl area and thus get sucked into the cabin....thus resulting in more heat.
DUB
IF you do not have this weatherstrip intact and sealing off this area....heated air form your engine compartment will get blown into the cowl area and thus get sucked into the cabin....thus resulting in more heat.
DUB
Race Director
Joined: Mar 2016
Posts: 14,320
Likes: 8,124
From: Napa Valley California
On the underside of your hood there should be a piece of weatherstrip that when the hood closes...it seals off the top edge of your cowl plenum.
IF you do not have this weatherstrip intact and sealing off this area....heated air form your engine compartment will get blown into the cowl area and thus get sucked into the cabin....thus resulting in more heat.
DUB
IF you do not have this weatherstrip intact and sealing off this area....heated air form your engine compartment will get blown into the cowl area and thus get sucked into the cabin....thus resulting in more heat.
DUB
I am looking for ways to allow more air to enter and pass through the engine compartment. I'm thinking, with my limited experience, is that a limited amount of outside air enters the engine compartment, gets trapped and allows engine heat to build in the engine compartment even at highway speeds, adding heat in the interior. I'm trying to find ways to allow air to pass through the engine compartment as fast as possible and to pull engine heat out with it. By replacing my front plate with a grille I'll allow more outside air in. Removing and rearranging items at the front of the engine and in front of the side vents will allow heated air to exit with less restriction. I was considering, that if I extend the height of the center of my stock hood for air cleaner clearance and keeping the hood seal in place, it would allow additional heated air to flow out through the back of the top of the hood opening. Am I wrong?
Last edited by OldCarBum; Jul 21, 2017 at 01:10 AM.
2026 Loser of the Year
Joined: Sep 2013
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From: New Or-leens Loo-z-anna
Everything you (never) wanted to know about cabin/engine bay heat:
Click on the link below....................
https://www.corvetteforum.com/forums...rior-heat.html
Click on the link below....................
https://www.corvetteforum.com/forums...rior-heat.html
Last edited by doorgunner; Jul 21, 2017 at 04:39 PM.