Hi All, thought I would share this win 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 dfference.
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 before. 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.
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.
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...
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
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 hooo
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
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.
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!
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.
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!!
Good info Andy. I am going to try that as I have mucho heat on my feet !!
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