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1/6/10 9:44am - Original Message: 'Stopped 90% of heat on feet'
Aussie79vette
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, - Australia

Vette(s):
1979 corvette

Joined: 5/15/2009
Posts: 28
Hi All, thought I would share this winSmile I had today trying to decrease the burning heat coming in  to the cabin.
 
I first diconnected the heater completly from the engine to see if there was hot water still running thru the heater core, this made little or no dfferenceCry.
 
Next step was to source the hot air which had to be coming in from the engine bay, the only place I could see was it had to be getting past the rubber seal on the hood.
 
The rubber looked like the origanal and was hard as rock and not flexible at all, the replacement rubber does not look long enough to go down the sid far enough to do any good.
 
I went to a local store that sells anything to do with rubber products and after market seals. I found a self adhesive foam made from EPDM rubber which is 18mm x 18mm square for AU$10.95 per metre.
I bought 3 Metres, took off the old rubber cleaned up the surface on the hood and attached the new foam. I put this all the way down both sides of the hood(the origanal only went down about one third of the way) and around the top to try and get a better seal and stop the hot air from getting out from the engine bay.
 
I went for a drive to see if this had made any difference and the result was amazing, the only heat was from the outside air, we had 32 deg Celcius pretty hot, there was no were near the heat that was coming in to the car beforeClap. I coould now put my bare feet up under he dash for the first time
When I came back and lifted the hood I can see were the rim from the gaurd has gone in to the foam all the way roud and down the sides giving a good seal and stopping the HOT air from escaping the engine bay and getting in to the 2 side vents.
 
Hope this info helps with others trying to reduce the heat, it seems to has stopped my problem.
 
Regards
 
Andy


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1/6/10 12:45pm - Reply: 'Stopped 90% of heat on feet'
aceinthehole Lifetime Member
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Valley Springs, CA - USA

Vette(s):
1978,Metalic Money Green W/Gold emblems,TH350 w/gear splitter,black & grey interior.1978,two tone,Metalic Rootbeer & gold ,Doeskin interior,auto. trans. 1981, Silver w/mirrored T-Tops,4 spd, charcoal interior.

Joined: 11/20/2005
Posts: 3618
Thanks Andy, I think most of us probably suffer from this dilemma. Definately worth the effort.

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Jimmy B.
Just can't wait to get on the road again.

 
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1/6/10 4:55pm - Reply: 'Stopped 90% of heat on feet'
KDADDY79
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Dutchess County, NY - USA

Vette(s):
White '79 Corvette. It's a driver.

Joined: 8/27/2007
Posts: 2484
Hey Andy,
Sounds like you nailed it!
Thanks for passing along the good info.
Kevin


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1/6/10 9:17pm - Reply: 'Stopped 90% of heat on feet'
ebo Lifetime Member
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Holland Patent, NY - USA

Vette(s):
#1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker

Joined: 6/3/2008
Posts: 4395

Heh Andy good find, I did not think that would have made a difference. I was just thinkin the other day that it's your summer down under.

Now there is no excuse to get some shots of that Vette down on the beach. Find some freinds in some WW's to pose with that C3Wink

Then post up a signature page!
Evil Smileebo


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1/6/10 10:04pm - Reply: 'Stopped 90% of heat on feet'
jp75vette
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Bloomfield Hills, MI - USA

Vette(s):
1975 Corvette coupe, 4 speed manual, 383 ci 9.5:1,Edelbrock dual plane Air Gap intake, Alum Heads,Comp Cam, roller Rockers, PS,PB,Tilt

Joined: 6/29/2008
Posts: 199
Can't believe I'm reading a post about heat when there is snow on the ground and I'm wondering about how to get more heat into the vehicle right now!
 
But a few months from now I will think about this post and wonder how I can reduce the heat inside my vehicle.
 
Do you have any photos that can detail what you did?


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1/6/10 11:18pm - Reply: 'Stopped 90% of heat on feet'
7643
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, - Canada

Vette(s):
1976 Stingray matching numbers. Stock 350 rebuilt, comp cam, roller rockers, push rods, 2.02 valves, +.30 flat tops, frontend & suspension rebuilt Dec 08. Interior from firewall 90% July. New exhaust, Collector plates, Paint will have to wait...& wait.

Joined: 12/18/2008
Posts: 88
Very interesting, some pictures would be great. I have added pro-form 350 heat/noise barrier on the complete inside floor and firewall of my 76 and am in the process of doing the same on the underside in the transmission tunnel and lower firewall. Will keep working on the sound and heat barriers, love my C 3 for what she is:):):) but it is always good to look at the options. Thanks, Happy C 3ing in Australia. Eric...

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1/7/10 3:16pm - Reply: 'Stopped 90% of heat on feet'
steves74 Lifetime Member
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Klamath Falls, OR - USA

Vette(s):
74 coupe 4 speed 350, 54K actual miles, all original; paint, interior, engine, split bumper. #'s match. 2nd owner, no stress cracks.

Joined: 2/1/2006
Posts: 1059
Thanks Andy... gave me some good ideas.  And yes pics would be nice.

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Steve, Lifetime Member #129

74 coupe 4 speed 350, 54K actual miles,
all original; paint, interior, engine,
split  bumper. #'s match. 2nd owner, no stress cracks.
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1/7/10 6:10pm - Reply: 'Stopped 90% of heat on feet'
brettwhite72
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Quincy, IL - USA

Vette(s):
1975 Steel Blue Metallic Coupe, 1985 Light Blue 4+3, 1987 Z52 Coupe Black

Joined: 12/29/2009
Posts: 21
Very interesting approach to solving this issue.  I've never heard of anyone doing this before, it's always been heat reflection material under the carpet for an answer (mixed results).  Good job!
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1/7/10 8:45pm - Reply: 'Stopped 90% of heat on feet'
kstyer Lifetime Member
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CUYAHOGA FALLS, OH - USA

Vette(s):
1975 C3 Red, T-Tops, Black Interior. All I need is time and money! Getting there!

Joined: 12/2/2003
Posts: 6410
Very interesting.   Thanks.

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On the "Tail of the Dragon"
(some day, no strike that, October 2008 it turned red, still in progress!)

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1/10/10 12:50am - Reply: 'Stopped 90% of heat on feet'
Aussie79vette
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, - Australia

Vette(s):
1979 corvette

Joined: 5/15/2009
Posts: 28
 
Ok, still trying to work out how to put images on the reply, hope this link works.Star
 
 
 
18x18mm rubber I replaced on the hood
 
 
Andy


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1/10/10 10:38am - Reply: 'Stopped 90% of heat on feet'
lukesvette Lifetime Member
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HOWELL, NJ - USA

Vette(s):
1979, Targa Blue (72 Color), Pace Car rear spoiler, L88 hood, Dark blue factory interior, 525HP 406, HD 700R4, 370 gears,Steeroids, composite rear spring, TT IIs wrapped in T/A Radials.

Joined: 5/18/2004
Posts: 6804
Interesting. Never wudda thunk it!! No seal on my hood, but never really had heat issues in the cabin.

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1/10/10 9:17pm - Reply: 'Stopped 90% of heat on feet'
ebo Lifetime Member
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Holland Patent, NY - USA

Vette(s):
#1 *1980 White, Red interior 14,000 mile #2 *1980 Red, Oyster interior 93,000 miles Resto project car, rebuilt to 383 stroker

Joined: 6/3/2008
Posts: 4395

 Andy, looks like you did a great job. Thanks for the picture........now get one of the car on the signature page! Don't make me come down there........actually you know how they always ask you where the one place you most want to visit is........yep mine is down under.

Lucky you! ebo wants to come to your home......yeah me and "TAZ"  woah hoooCool      Rolling On The Floor Laughing

Evil Smileebo
ebo2010-01-10 18:19:00

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7/13/10 9:46pm - Reply: 'Stopped 90% of heat on feet'
rod7515 Lifetime Member
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Red Lion, PA - USA

Vette(s):
1974 White 350 Corvette, TH400 Automatic 1972 Tangerine /Go Mango Convertible 383 Stroker, 2004r Automatic

Joined: 10/27/2006
Posts: 1172
Andy,
Thanks for this post. I purchased some weatherstripping off of ebay this past weekend and if it works as well as yours did I will be in heaven! The weatherstrip I bought is in a napa box so I plan on checking with them to see if it is still available and what pricing is. I put it on last night and it fit perfect. Had to push down on the hood for it to latch shut but I'm sure it will compress some. But a great seal. Saturday if its nice out I will give it a text drive. I'll let you know how it goes.
Thanks, Rodney


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7/13/10 11:06pm - Reply: 'Stopped 90% of heat on feet'
ranger3 Lifetime Member
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North Charleston, SC - USA

Vette(s):
1975 L48 AT AC T-top

Joined: 3/20/2004
Posts: 4176
Thanks for the tip Andy. Good on ya!
 
Scott


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7/18/10 10:13pm - Reply: 'Stopped 90% of heat on feet'
rod7515 Lifetime Member
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Red Lion, PA - USA

Vette(s):
1974 White 350 Corvette, TH400 Automatic 1972 Tangerine /Go Mango Convertible 383 Stroker, 2004r Automatic

Joined: 10/27/2006
Posts: 1172
Took the car for a drive this weekend to test the amount of heat the new weatherstripping around the hood made. It definitely made a difference but there is still alot of heat there yet. Stopped at home depot and bought the insulation that has foil on both sides and seems like some type of soft plastic or bubble wrap inside the foil. I plan on removing the carpet to install the insulation at the same time I change the trans and the console for the shift pattern change. I'll let you know how that effects the heat as well. 

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7/18/10 10:28pm - Reply: 'Stopped 90% of heat on feet'
KDADDY79
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Dutchess County, NY - USA

Vette(s):
White '79 Corvette. It's a driver.

Joined: 8/27/2007
Posts: 2484

Hey Rod,

You may also want to consider blocking off your heater core.

I put valves that I can open & close on my heater hoses just before my heater core. Makes a big difference!

Kevin



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7/19/10 9:17pm - Reply: 'Stopped 90% of heat on feet'
rod7515 Lifetime Member
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Red Lion, PA - USA

Vette(s):
1974 White 350 Corvette, TH400 Automatic 1972 Tangerine /Go Mango Convertible 383 Stroker, 2004r Automatic

Joined: 10/27/2006
Posts: 1172
Kevin - I bought valves for each side of the heater hose but was worried that without flow going thru there will the heater core develop leaks faster than normal. I know many members dont worry about the heater cores because we dont drive them in the winter but if we fix the heat from coming into the cab in the late fall evenings my wife wont be happy without a heater! 

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7/19/10 9:56pm - Reply: 'Stopped 90% of heat on feet'
KDADDY79
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Dutchess County, NY - USA

Vette(s):
White '79 Corvette. It's a driver.

Joined: 8/27/2007
Posts: 2484

Rod,

With the valves in place I allowed some antifreeze in to the heater core before I shut off the flow.

I believe that leaving some antifreeze in the heater core is better than leaving it dry. (I recall getting some positive feedback here at C3VR on that idea.) You still get a bit of heat but it's nothing compared to a flow of heated anti freeze circulating through the core.
 
There are quite a few threads on this topic here. Read up on it before you decide.
 
Kevin


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7/19/10 10:10pm - Reply: 'Stopped 90% of heat on feet'
dskopp
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Oak Creek, WI - USA

Vette(s):
1981 Great White Shark. Red Interior, 350/190hp. PS, PB (SS), A/C CC, T-Tops, Going to remain as Stock as possible. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vetts Car Club. 175,000 Original miles!!

Joined: 5/21/2008
Posts: 1956
Good info Andy.  I am going to try that as I have mucho heat on my feet !!
Dan


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2/15/11 1:22am - Reply: 'Stopped 90% of heat on feet'
paul_scooter
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prescott, AZ - USA

Vette(s):
1977 corvette, 95% restored. ZZ4 engine with tuned exhaust. T10 4 speed.

Joined: 2/9/2011
Posts: 16
Hi,
I'm new here and just read this as i have this problem too.
I looked at my vette and can see how the heat from the engine compartment is getting into the cabin?  Is there a fresh air intake on the outside under the windshield? If so where is it?
thanks
Paul


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Paul
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