cabin heat
Thread Starter
Racer
Joined: May 2008
Posts: 353
Likes: 0
From: boulogne buenos aires
cabin heat
In the last days I've been in the task of eliminating cabin Heat. Sealed the fender to cowl union through the vent flapper (also fixed) in the kick panels as indicatated here in one o the tips section. Also as my heater core was leaking I by passed it so no hot water there. Also tampered the vent that comes back from the radio i9n the center of the console. I put a weather strip en the top in order to make it seal when hood closes preventing hot air from the engine comingo to the cowl and then to the cabin. All this didn't help much (hot air is still coming through the kick panel area)!!!! The only thing i found is still making hot air to get to the cowl is the cowl induction system. In my car I have a open element filter so actually the cowl induction is non functional. So my question is a good idea to try seal it with some foam or sealant? Or will this make another system to fail?
Note: the floor is also insulated.
Note: the floor is also insulated.
Burning Brakes
Joined: Jul 2008
Posts: 876
Likes: 0
From: Canastota Ny
AHHHHHHHHHHHHH you Sir are what the majority of these guys here have nightmares about! 
and what keep the tech guys busy with!
Just playing -- seriously how bout Duct tape? its sounds like that the direction youre going in already!
and what keep the tech guys busy with!Just playing -- seriously how bout Duct tape? its sounds like that the direction youre going in already!
Pro
Joined: Jan 2007
Posts: 692
Likes: 0
From: waterloo ontario
the handy mans secret weapon Rod
love the Vette
Burning Brakes
Joined: Jul 2008
Posts: 876
Likes: 0
From: Canastota Ny
love that red green show on PBS. duct tape fixes everything!! but back to the real thread...i was really just being smart. heat in the cabin of these cars is always there. it unevitable and you will probably never get it out completely.
to remove most of it guys have been putting dynamat, and other sticky back, heat type sheets under the carpet. im sure there are items to use then dynamat for heat but thats similar to construction.
to remove most of it guys have been putting dynamat, and other sticky back, heat type sheets under the carpet. im sure there are items to use then dynamat for heat but thats similar to construction.
Melting Slicks
Joined: Jan 2003
Posts: 2,877
Likes: 13
From: Doha
St. Jude Donor '08
You should differentiate between two types of heat transfer methods : radiation transfer and conduction transfer, when it comes to cabin heat, we are talking about radiation transfer from exhaust/engine to cabin, and then a conductive transfer from cabin floor to you, and you just cannot fight that heat by putting things like dynamat and reflectix from the inside, because their reflective foil is designed to "reflect" the radiant heat, not the "conductive" heat. So the best method is to use a radiant heat shield from "outside" , like on the firewall and down to the transmission tunnel and under the seat floors, and use some conductive heat shield inside the cabin which could be some sort of foam liner.
At least that how the new cars are equipped with from the factory.
At least that how the new cars are equipped with from the factory.
Advanced
Joined: Dec 2006
Posts: 50
Likes: 1
From: So. Cal. CA
Sorry, I don't have a link but . . .
. . . there's a great thread (with pics) from someone who found leakage on the firewall side where the HVAC "stuff" is. I forget what they used to seal it, but that info is in the thread too.
Also, I seem to remember a thread where the issue was radiant heat transfer to this area, and the poster solved it with some shielding. Again, details were in the thread on vendor, part #'s, etc. for their solution.
Sorry I can't provide links, but maybe you can turn something up with search (I'm hunting myself, but drawing a blank so far).
Mike
Also, I seem to remember a thread where the issue was radiant heat transfer to this area, and the poster solved it with some shielding. Again, details were in the thread on vendor, part #'s, etc. for their solution.
Sorry I can't provide links, but maybe you can turn something up with search (I'm hunting myself, but drawing a blank so far).
Mike
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,481
From: Southbound
Cruise-In II Veteran
In all C3s, air circulates through the wiper trough and down each side of the cowl to the kick panel vents. On AC cars, only the passenger side admits air. On non-AC cars, both sides will allow air entry. Replacing the rubber seals on the vent doors will help a little.
Thread Starter
Racer
Joined: May 2008
Posts: 353
Likes: 0
From: boulogne buenos aires
actually heat comes from engine comparment, through the cowl and ventilation system. Floor is insulated with some sort of carpet insulation with foil and tar thing i got down here.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Melting Slicks
Joined: Jan 2003
Posts: 2,877
Likes: 13
From: Doha
St. Jude Donor '08
IMHO, getting a radiant heat shield on the outer surface of the cabin will prevent not less than 80% of the heat.
Le Mans Master
Joined: Oct 2005
Posts: 6,247
Likes: 471
From: Glen Allen, VA
My first thought was why are you worried about heat in the winter, but then I see you're in Buenos Aires. My suggestion is if you have headers, have them ceramic coated, or at least put some wrap on them. It made a very noticeable difference on the inside of my car.
Melting Slicks
Joined: Sep 2007
Posts: 2,429
Likes: 0
From: Tucson AZ
I tried once to seal everything from the firewall side, and noticed that a great deal of heat is transfered as a radiant heat from the engine compartment. The stock insulation is only effective as a conductive heat barrier, but nothing will prevent the radiant heat from getting inside, basically GM did nothing to prevent that from happening.
IMHO, getting a radiant heat shield on the outer surface of the cabin will prevent not less than 80% of the heat.
IMHO, getting a radiant heat shield on the outer surface of the cabin will prevent not less than 80% of the heat.
Thread Starter
Racer
Joined: May 2008
Posts: 353
Likes: 0
From: boulogne buenos aires
regarding winter i used the car all of it w/o having to turn on the heat not even once. that was before bypassing the heater core when it started leaking. Next I will duct tape all ventialtion system and see what turns out ahahahha
Melting Slicks
Joined: Apr 2001
Posts: 2,030
Likes: 363
From: Lubbock Texas
This tech article might be of some help to you.
https://www.corvetteforum.com/techti...=241&TopicID=3
DC
https://www.corvetteforum.com/techti...=241&TopicID=3
DC
