Early C3 Undercar Insulation and Heat Shield Question...
10-17-2013, 10:25 PM
#1
Instructor
Thread Starter
Early C3 Undercar Insulation and Heat Shield Question...
I'm currently finishing up the floor of my body before putting it back on the chassis and I've got a question about under car insulation and heat shields and rattling.
My early 1969 coupe doesn't have any holes drilled in the front of the floor pans for the "spike clips" that held on the large pieces of insulation that came on some cars underneath the metal heat shields.... so I'm guessing that it didn't come with them. There's supposedly around 12 clips that held each of these in if your car has them so that's 24 holes per side. No wonder so many fiberglass floors didn't last!!!
My question is this... do the metal heat shields under the floor pans on 1968-69's rattle really bad without insulation?? If so I'm considering putting the insulation in between the floor pan and the heat shield even if I don't use the clips to keep it in place. My hope would be that the insulation would prevent the pan from rattling.
If no one has issues with rattling using no insulation then I will just forget it.
Ideas/Comments??
Rick
My early 1969 coupe doesn't have any holes drilled in the front of the floor pans for the "spike clips" that held on the large pieces of insulation that came on some cars underneath the metal heat shields.... so I'm guessing that it didn't come with them. There's supposedly around 12 clips that held each of these in if your car has them so that's 24 holes per side. No wonder so many fiberglass floors didn't last!!!
My question is this... do the metal heat shields under the floor pans on 1968-69's rattle really bad without insulation?? If so I'm considering putting the insulation in between the floor pan and the heat shield even if I don't use the clips to keep it in place. My hope would be that the insulation would prevent the pan from rattling.
If no one has issues with rattling using no insulation then I will just forget it.
Ideas/Comments??
Rick
10-18-2013, 12:52 AM
#3
Instructor
Thread Starter
DDawson...
Those headers look pretty good also... they're tucked up under the car very nicely.
What brand are you running? After NCRS judging I might just slap on a set!!! I'm guessing from your avatar that this is a BB car?
Rick
Those headers look pretty good also... they're tucked up under the car very nicely.
What brand are you running? After NCRS judging I might just slap on a set!!! I'm guessing from your avatar that this is a BB car?
Rick
10-18-2013, 03:30 AM
#4
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ddawson,
I like the look of the DEI products you used.
Do you remember what was the name of the insulation you used on the underside floors?
I would like to insulate my floors underside the same as you.
I recognize the zero clearance on the heat shields but unfamilar with the pebble textured product on the floors.
Is the also self adhesive like the zero clearance stuff?
Thanks,
Marshal
I like the look of the DEI products you used.
Do you remember what was the name of the insulation you used on the underside floors?
I would like to insulate my floors underside the same as you.
I recognize the zero clearance on the heat shields but unfamilar with the pebble textured product on the floors.
Is the also self adhesive like the zero clearance stuff?
Thanks,
Marshal
10-18-2013, 04:00 AM
#5
Le Mans Master
sumcollegekid, BBC Hedman Headers with black thermo coating.
marshal135, DEI Floor & Tunnel Shield II - Heat & Sound Insulation is the thick stuff and is self sticking. I've got more on it's way to do the tranny tunnel this month.
The other product was DEI Reflect-A-Cool that I used on the shields.
It does seem to work because coming back from my last car show on a warm day my feet didn't feel like they were in an oven on the way home. Interior has nothing but carpet at this point.
marshal135, DEI Floor & Tunnel Shield II - Heat & Sound Insulation is the thick stuff and is self sticking. I've got more on it's way to do the tranny tunnel this month.
The other product was DEI Reflect-A-Cool that I used on the shields.
It does seem to work because coming back from my last car show on a warm day my feet didn't feel like they were in an oven on the way home. Interior has nothing but carpet at this point.
10-19-2013, 02:58 AM
#6
Just did a bit of a test with the DEI floor and tunnel shield II on the outside of the floor pan and with bare mettle on the inside.
My DVOM has a temp sensor and taping it on the inside bare metal floor it read 65 degrees. With a heat gun that I had running for 4 min to fully warm up I held it on the outside where there was no insulation one in from the metal. in 30 seconds the temp went from 65 degrees to 138 degrees. I then repeated this but where the DEI insulation is and after two minutes it went from 65 to 66 degrees. I did this test twice with the same results.
I have not driven it yet but I think it will work well.
My DVOM has a temp sensor and taping it on the inside bare metal floor it read 65 degrees. With a heat gun that I had running for 4 min to fully warm up I held it on the outside where there was no insulation one in from the metal. in 30 seconds the temp went from 65 degrees to 138 degrees. I then repeated this but where the DEI insulation is and after two minutes it went from 65 to 66 degrees. I did this test twice with the same results.
I have not driven it yet but I think it will work well.
10-19-2013, 11:01 AM
#8
10-19-2013, 11:04 AM
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10-19-2013, 12:26 PM
#10
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+1 For the DEI product.
I needed some sort of thin heat barrier for the trans tunnel - the stock type insulation is too thick, the fit is VERY tight with the TKO600
I used the Floor & Tunnel Shield II - Heat & Sound Insulation from DEI. Very happy with it. It is very easy to install, and it is quite thin, which was what I wanted for the very tight fit of my TKO600 trans.
http://www.designengineering.com/cat...und-insulation
I did see a difference in temperature. I used the 4' x 21" piece, and it was enough to do the entire trans tunnel with a little left over. I think it was about 5 or 6 separate pieces because of all the different angles it was easier to do that way. Cardboard templates before you cut will save on wasted material. This material cannot be cut with scissors, I had to use tin snips, the aluminum outer layer is almost like a thin gauge sheet metal. I also used the DEI cool-tape at all the open edges and butt joints. I thought I had some pics, but I don't.
http://www.designengineering.com/cat...ials/cool-tape
I needed some sort of thin heat barrier for the trans tunnel - the stock type insulation is too thick, the fit is VERY tight with the TKO600
I used the Floor & Tunnel Shield II - Heat & Sound Insulation from DEI. Very happy with it. It is very easy to install, and it is quite thin, which was what I wanted for the very tight fit of my TKO600 trans.
http://www.designengineering.com/cat...und-insulation
I did see a difference in temperature. I used the 4' x 21" piece, and it was enough to do the entire trans tunnel with a little left over. I think it was about 5 or 6 separate pieces because of all the different angles it was easier to do that way. Cardboard templates before you cut will save on wasted material. This material cannot be cut with scissors, I had to use tin snips, the aluminum outer layer is almost like a thin gauge sheet metal. I also used the DEI cool-tape at all the open edges and butt joints. I thought I had some pics, but I don't.
http://www.designengineering.com/cat...ials/cool-tape