Interior Heat
Le Mans Master
Joined: Oct 2006
Posts: 6,842
Likes: 285
From: Palmdale CA
Doorgunner, we have a bud who races circle track, who did exactly what you did to his race car, even the same material and the many, many screws! We were talking about it yesterday after I got back.
Le Mans Master
Joined: Oct 2006
Posts: 6,842
Likes: 285
From: Palmdale CA
Update; we will be trying it out again today, doing two more tweaks. I installed these with no clearance whatsover on the front portion of the shields with the screws. Going to jack it up and use 1/2 inch spacers to push the shield away from the front and see.how that works.
The second test, we'll make up a quick and dirty, multi-layer' blanket using at least five layers of the Kapton material with fiberglass matting and them we'll stuff that between the shield and the floorboard
The second test, we'll make up a quick and dirty, multi-layer' blanket using at least five layers of the Kapton material with fiberglass matting and them we'll stuff that between the shield and the floorboard
Le Mans Master
Joined: Oct 2006
Posts: 6,842
Likes: 285
From: Palmdale CA
And if the above doesn't work, I am ordering corrugated cardboard, that's not made of paper, but is made from alumimum and we'll experiment with that.
The last straw, will be obtaining through surplus or scrap sales, aircraft engine compartment 'blankets', which are made up like sealed sandwiches on all sides, with some kind of insulation (I don't know, offhand).
These aircraft blankets are made up of a really stiff and heavy aluminum, that will hold a particular shape without sagging, but can still be bolted on the edges.
Not giving up yet. Drove the '74 for yesterday in the heat for nearly two hours and thought that these cars would be great pizza delivery vehicles, because the pizza would be delivered piping hot! And in fact, picked up a Little Ceasers deep dish pizza and it's rectangular box, fit perfectly on the floorboard, and yes, it was plenty hot when I got it to the shop!
Just as a side note, while driving around, I noticed too, the four speed shifter handle by itself is a blazing heat source and so was the handbrake, both measuring 120 degrees!
The last straw, will be obtaining through surplus or scrap sales, aircraft engine compartment 'blankets', which are made up like sealed sandwiches on all sides, with some kind of insulation (I don't know, offhand).
These aircraft blankets are made up of a really stiff and heavy aluminum, that will hold a particular shape without sagging, but can still be bolted on the edges.
Not giving up yet. Drove the '74 for yesterday in the heat for nearly two hours and thought that these cars would be great pizza delivery vehicles, because the pizza would be delivered piping hot! And in fact, picked up a Little Ceasers deep dish pizza and it's rectangular box, fit perfectly on the floorboard, and yes, it was plenty hot when I got it to the shop!
Just as a side note, while driving around, I noticed too, the four speed shifter handle by itself is a blazing heat source and so was the handbrake, both measuring 120 degrees!
Thread Starter
Melting Slicks
Joined: Sep 2011
Posts: 3,372
Likes: 215
From: Peoria Arizona
Thanks for all your research and hard work on this F22! Great info and I look forward to hearing more about your results.
The shifter and ebrake handle surprised me. I've never noticed that being hot - seems to be the footwell area that really stands out to me. I'm going to take my IR gun with me on the next drive and see what's what.
Thanks again,
Adam
The shifter and ebrake handle surprised me. I've never noticed that being hot - seems to be the footwell area that really stands out to me. I'm going to take my IR gun with me on the next drive and see what's what.
Thanks again,
Adam
Le Mans Master
Joined: Oct 2006
Posts: 6,842
Likes: 285
From: Palmdale CA
Thank you, Adam. Sore and tired today, but it's the last day, I think we're gonna have with a 99 degree temp or better. I'll report with results on today's experiment, good or bad, late this afternoon. Driving around these cars, with no ac in the summer is truly a tough and tiring experience. I concur on the floorboards, that is the cause. If I could get it to be ambient temp, I'd be happy with that.
Le Mans Master
Joined: Oct 2006
Posts: 6,842
Likes: 285
From: Palmdale CA
I'd love to see your results on that!
Le Mans Master
Joined: Mar 2001
Posts: 5,738
Likes: 644
From: Lincoln, CA
DEI states it's 10mil aluminum FYI. The edges can leave a nasty cut in your fingers if your not careful.
Even as a convertible the foot wells would get hot. The stock packing was in place but I don't have a transmission collar and tunnel shield. I'll tackle that when I do the clutch.
Even as a convertible the foot wells would get hot. The stock packing was in place but I don't have a transmission collar and tunnel shield. I'll tackle that when I do the clutch.
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Le Mans Master
Joined: Oct 2006
Posts: 6,842
Likes: 285
From: Palmdale CA
Just for giggles, brought the thermometer with me on a shopping trip in my Ford Focus today. 95 degrees, pavement, 125 degrees and didn't run the AC. The floorboard temp in my '06 Focus ranged from 95, starting out, to an average of 98 degrees and it wasn't uncomfortable. If we could find a way to keep the C3, at a 100 or so, I think that would be good.
Le Mans Master
Joined: Oct 2006
Posts: 6,842
Likes: 285
From: Palmdale CA
Update: Dropped the drivers floor shield a full inch. Earlier this morning, picked up some 2" fiberglass insulation at Loew's, and I made a big ol' Kapton sandwich, with the fiberglass as the filler. I left the outer 2 inches fiberfree, so we could seal the edges like a seal-a-meal all the way around. I then applied another layer of Kapton the inside of the shield as well,.then put the sandwich in between the shield and the floorpan. Buttoned it up and took it off the jacks. Let's take it off the jacks and roll.
Forty five minutes later, highways, cranking it out, then stop and go, thirty minutes driving barefoot and no discomfort yet. Drove the last ten minutes at ten mph or so, around the mall and still no serious discomfort. Don't get me.wrong, it was still warm, but it was nowhere near the super bitch-box hot, I experienced yesterday! There was no solid furnace blast feel like I encountered just yesterday!
Now the 'hot soak' test and I'm having a cold IPA. So far so good and I'll report on the ride home. The solution is multiple layers and air gap.
Forty five minutes later, highways, cranking it out, then stop and go, thirty minutes driving barefoot and no discomfort yet. Drove the last ten minutes at ten mph or so, around the mall and still no serious discomfort. Don't get me.wrong, it was still warm, but it was nowhere near the super bitch-box hot, I experienced yesterday! There was no solid furnace blast feel like I encountered just yesterday!
Now the 'hot soak' test and I'm having a cold IPA. So far so good and I'll report on the ride home. The solution is multiple layers and air gap.
Pro
Joined: Nov 2003
Posts: 692
Likes: 1
From: Peabody Ma.
Thanks...Looks Great
Le Mans Master
Joined: Oct 2006
Posts: 6,842
Likes: 285
From: Palmdale CA
Heat Soak, passed with flying colors. I'll tell you what, it's really nice driving a C3 Corvette in 97 degree heat and not getting driven out of the car by excess heat! Even barefoot! If we added two thin layers of the Kapton film,.sandwiched with high density fiberglass insulation, I could even see it better!
PS: Bruce, nothing burned, but I had a fire extinguisher, just in case, but we're good and thanks. I'd still like to hear how Ddawson's install went.
PS: Bruce, nothing burned, but I had a fire extinguisher, just in case, but we're good and thanks. I'd still like to hear how Ddawson's install went.
Melting Slicks
Joined: Aug 2012
Posts: 3,487
Likes: 83
From: Titusville Florida
f22 have you thought about using Styrofoam between your heat shield and the floor pan? If you glue the styrofoam to the heat shield I doubt it will move and it wont need any clearance between the shield and floor pan to work. It's cheap too 
Melting Slicks
Joined: Aug 2012
Posts: 3,487
Likes: 83
From: Titusville Florida
Le Mans Master
Joined: Oct 2006
Posts: 6,842
Likes: 285
From: Palmdale CA
Thanks for the suggestion, because I was actually looking at the thin foil covered sheets this morning, but couldn't find a lot about its rating, then spied the small roll of fiberglass that was a closer match, to what I wanted to do with it. Pics tommorow!
Intermediate
Joined: May 2013
Posts: 26
Likes: 1
From: Dubai
I've only had a corvette for 2 weeks... and I've read the insulation thread with great interest... but it seems you've overlooked a much easier solution.. ..And if there's a fire wherever you're going, you can pitch in!!
Le Mans Master
Joined: Oct 2006
Posts: 6,842
Likes: 285
From: Palmdale CA
Saturday was a total toaster oven. After applying another layer on the inside of the shield, along with a pad made up of a sandwiched insulation, the floorboard still got warm, but it was nothing like the previous day!
I was a happy camper yesterday! I could actually drive this car, no AC, for nearly an hour and not broil. It was kind of nice, really.
Le Mans Master
Joined: Oct 2006
Posts: 6,842
Likes: 285
From: Palmdale CA
Thanks! Not only no issues, but it worked. I'd like to hear how the DEI product performs as well and see if DDawson's buddy got to try it out. I'm taking a few days off, myself, before I start pulling the shield and finalizing, at least the drivers side in sheet metal. Also going to find a thinner, denser insulation, because I think two thin sandwiches of Kapton and insulation, will outperform, the one layer.