Doesn't make sense to me........
Thread Starter
Le Mans Master
Joined: Feb 2012
Posts: 6,644
Likes: 481
From: OK
Doesn't make sense to me........
I've spent a lot of time and effort as many of you trying to rid our car of the issue of heat in the cab.....have put most of the resources I have on the interior of the car to stop it.....and I got to thinking...why, IF it's already made it's way into the cabin.....it's tooooo late! Yeah I can keep the floor boards from turning into frying pans.....but I need to STOP this heat before it gets to the cabin......Will direct more effort to rejecting/redirecting/ or reflecting HEAT before it even has a chance to warm up the cabin...........geez I am sooooo slow.
Possibly some kind of aluminum shield, sorta like a skid plate the will fit in front of the firewall and tranny tunnel to divert heat down and out.......they have some tiny little plates right in front of the foot wells......good thought just not enough.
Possibly some kind of aluminum shield, sorta like a skid plate the will fit in front of the firewall and tranny tunnel to divert heat down and out.......they have some tiny little plates right in front of the foot wells......good thought just not enough.
Last edited by 73Corvette; Apr 3, 2012 at 08:48 AM.
Le Mans Master
Joined: May 2002
Posts: 5,086
Likes: 787
From: Lebanon Township New Jersey
The driving force of heat transfer is temperature difference. The greater the temp. difference between two areas, like under the hood / interior of the car, the more heat will flow from the hotter area to the cooler. Lets say its 75 deg in the car and 175 deg under the hood. The temp. difference is 100 deg. But if its 75 deg in the car and 195 under the hood the difference is 120 degrees, or 20% more. That will cause 20% more heat to flow into the interior. What I'm driving at is lowering your engine temp will lower your interior temp. (Heat from the exhaust under the car is another issue.) If your engine runs a little hot, try improving that situation.
Drifting
Joined: Dec 2011
Posts: 1,743
Likes: 289
From: Chardon Ohio
The driving force of heat transfer is temperature difference. The greater the temp. difference between two areas, like under the hood / interior of the car, the more heat will flow from the hotter area to the cooler. Lets say its 75 deg in the car and 175 deg under the hood. The temp. difference is 100 deg. But if its 75 deg in the car and 195 under the hood the difference is 120 degrees, or 20% more. That will cause 20% more heat to flow into the interior. What I'm driving at is lowering your engine temp will lower your interior temp. (Heat from the exhaust under the car is another issue.) If your engine runs a little hot, try improving that situation.
Yikes! I haven't had my car yet in the summer
Jim
Advanced
Joined: Sep 2011
Posts: 90
Likes: 0
From: Onoway Alberta
I agree with trying to stop the heat source from underneath the car,but I do think a reflective barrier will help, as long as you glue it down to the surface so there is no airspace between the two to heat up and disperse throughout the car. Your keeping the heat on your floorboards longer,therefore allowing the flowing outside air to whisk it away before it works its way into the cab.(to a degree).Same thing with a house. If you dont insulate properly and end up with dead airspace in your walls due to lack of insulation, the heat and cold will transfer right through to your inside wall. The way I look at it,your floorboards are the plywood sheeting on your house.The reflective insulated barrier is your insulation,and carpet is the drywall. Just my own silly theory.
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Burning Brakes
Joined: Mar 2012
Posts: 1,200
Likes: 1
From: Belle River Ontario
2015 C3 of Year Finalist
Solution ...
Drive around with the heat on and windows up every day \ all day.
Get the cab to about 160 \ 170 , this will cause a reverse osmosis type of thingy so the heat from the cab will leach into the engine bay ...
See how easy that was .
You're welcome
Just kiddin by the way , I've yet to drive my 73 in any heat so to speak ... This could get interesting .
Drive around with the heat on and windows up every day \ all day.
Get the cab to about 160 \ 170 , this will cause a reverse osmosis type of thingy so the heat from the cab will leach into the engine bay ...
See how easy that was .
You're welcome
Just kiddin by the way , I've yet to drive my 73 in any heat so to speak ... This could get interesting .
Racer
Joined: Aug 2004
Posts: 419
Likes: 4
From: Lewisville TX
I have seen some interesting things to do..
Try Lizardskin on the outside tranny tunnel and under body Saw it done on an episode of Trucks!). You can also wrap your exhaust to keep heat from radiating out.
A good insulator on the inside is good too, but stopping it from the outside is better!
Try Lizardskin on the outside tranny tunnel and under body Saw it done on an episode of Trucks!). You can also wrap your exhaust to keep heat from radiating out.
A good insulator on the inside is good too, but stopping it from the outside is better!
Drifting
Joined: Jul 2008
Posts: 1,873
Likes: 27
From: Sonora CA
Solution ...
Drive around with the heat on and windows up every day \ all day.
Get the cab to about 160 \ 170 , this will cause a reverse osmosis type of thingy so the heat from the cab will leach into the engine bay ...
See how easy that was .
You're welcome
Just kiddin by the way , I've yet to drive my 73 in any heat so to speak ... This could get interesting .
Drive around with the heat on and windows up every day \ all day.
Get the cab to about 160 \ 170 , this will cause a reverse osmosis type of thingy so the heat from the cab will leach into the engine bay ...
See how easy that was .
You're welcome
Just kiddin by the way , I've yet to drive my 73 in any heat so to speak ... This could get interesting .
Will this ger rid of my love handles??
Thread Starter
Le Mans Master
Joined: Feb 2012
Posts: 6,644
Likes: 481
From: OK
[QUOTE=Redwing01;1580457168]Solution ...
Drive around with the heat on and windows up every day \ all day.
Get the cab to about 160 \ 170 , this will cause a reverse osmosis type of thingy so the heat from the cab will leach into the engine bay ...
See how easy that was .
You're welcome
Your such a dork! I may try that when the wife isn't with me.....
Drive around with the heat on and windows up every day \ all day.
Get the cab to about 160 \ 170 , this will cause a reverse osmosis type of thingy so the heat from the cab will leach into the engine bay ...
See how easy that was .
You're welcome
Your such a dork! I may try that when the wife isn't with me.....
Racer
Joined: Apr 2009
Posts: 331
Likes: 44
From: Cincinnati Ohio
There are supposed to be heat shields on the front of the firewall and also a reflective heat shield on the bottom side of the tunnel above the transmission. There is also supposed to be a foam collar between the bell housing and the tunnel to block the air from going in this area.
I also added reflective insulation on the floor boards under the carpet. 73's didn't have a shut off valve to cut the water from flowing through the heater core. You can add a manual valve to solve this problem.
You should also check to see if the seal and the cold air intake flap on the hood are working properly, if not you will get heat coming in through the kick panels.
I can now drive my 73 without cooking my feet to well done.
Unk
I also added reflective insulation on the floor boards under the carpet. 73's didn't have a shut off valve to cut the water from flowing through the heater core. You can add a manual valve to solve this problem.
You should also check to see if the seal and the cold air intake flap on the hood are working properly, if not you will get heat coming in through the kick panels.
I can now drive my 73 without cooking my feet to well done.
Unk
Thread Starter
Le Mans Master
Joined: Feb 2012
Posts: 6,644
Likes: 481
From: OK
OK...here is what I have done so far....
Completely smothered the floor with Dynamat...
Put in new air dam....
Stuffed as large a foam collar, piece 4'x4'x18' of memory foam between bell housing and tranny tunnel...
Tranny tunnel blanket...
Header wrap......
Put in B-cool aluminum radiator (stays right on 180)
Blocked off and sealed vent door behind kickpanel on passenger side...
Cut off valve in heater line
The only thing I haven't done yet is re-seal all the grommets in the firewall and the joints where A/C housing connects to firewall.....
It is WAY better than it was....but, I am going to beat the heat if it's the last stinkin thing I do to her dang blasted car...hehe
Completely smothered the floor with Dynamat...
Put in new air dam....
Stuffed as large a foam collar, piece 4'x4'x18' of memory foam between bell housing and tranny tunnel...
Tranny tunnel blanket...
Header wrap......
Put in B-cool aluminum radiator (stays right on 180)
Blocked off and sealed vent door behind kickpanel on passenger side...
Cut off valve in heater line
The only thing I haven't done yet is re-seal all the grommets in the firewall and the joints where A/C housing connects to firewall.....
It is WAY better than it was....but, I am going to beat the heat if it's the last stinkin thing I do to her dang blasted car...hehe
Last edited by 73Corvette; Apr 3, 2012 at 11:13 PM.
Pro
Joined: May 2004
Posts: 712
Likes: 4
From: caraquet N.B Canada
To solve this problem i instaled a cutoff valve similar to this at the intake hose that leads to the heater core. Work real good i even installed headers and it's cooler than when i had the factory manifold. Now i can enjoy my car in the warm sunny days.
Safety Car
Joined: Feb 2012
Posts: 4,705
Likes: 983
From: Orlando FL
Y`all are starting to scare me! Our 71 is a NON AC car, and we live in Florida! Did I just buy a giant microwave oven with wheels on it?
The car originally came from North Carolina, and we plan to retire there with it.....
IF we don`t bake to a crisp here first!
The car originally came from North Carolina, and we plan to retire there with it.....
IF we don`t bake to a crisp here first!
Thread Starter
Le Mans Master
Joined: Feb 2012
Posts: 6,644
Likes: 481
From: OK
Race Director
Joined: Mar 2006
Posts: 14,112
Likes: 28
From: Florida
I've spent a lot of time and effort as many of you trying to rid our car of the issue of heat in the cab.....have put most of the resources I have on the interior of the car to stop it.....and I got to thinking...why, IF it's already made it's way into the cabin.....it's tooooo late! Yeah I can keep the floor boards from turning into frying pans.....but I need to STOP this heat before it gets to the cabin......Will direct more effort to rejecting/redirecting/ or reflecting HEAT before it even has a chance to warm up the cabin...........geez I am sooooo slow.
Possibly some kind of aluminum shield, sorta like a skid plate the will fit in front of the firewall and tranny tunnel to divert heat down and out.......they have some tiny little plates right in front of the foot wells......good thought just not enough.
Possibly some kind of aluminum shield, sorta like a skid plate the will fit in front of the firewall and tranny tunnel to divert heat down and out.......they have some tiny little plates right in front of the foot wells......good thought just not enough.
When you get a chance, take a look at the doghouse of a van.
They are made of relatively thin fiberglass/plastic surrounding part of the engine and exhaust, but very little heat gets transferred into the cabin.
You will be surprised at what little material it takes.