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Jlnance
| Posted on Wednesday, October 11, 2006 - 08:48 am: |
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As I'm sure you are aware, when a space shuttle lands, it is procted from the heat of reentry by a layer of tiles. These tiles have almost magic thermodynamic properties. You can put one in a furnace and heat it till it glows white hot. Then you can pull it out and pick it up with your bare hands while it's still glowing. This is possible because the outside of the tile cooled when it touched the air, and the tile is such a good insulator that the heat from the white hot center can't get out to burn you. Now magic as these tiles might be, they are still 30 year old technology. Plenty of time to excape into the real world. So why isn't there a coating of this material on the inside of my headers? It seems like you could put a hundredth of an inch thick coating on the inside of the pipes, and they wouldn't even get warm. I know I could jethot them, but that doesn't sound like it even comes close to the thermal properties of the tile materials. |
Spiderman
| Posted on Wednesday, October 11, 2006 - 09:03 am: |
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There are, If your headers are ceramic coated you can touch your pipes seconds after turning off your motor. Much like a shuttle tile which is a form of ceramic. But.. Your pipe is constantly heated by exhaust gas. SO to compare a shuttle tile to a running motor/pipe would be like comparing touching a pipe on a running motor and touching a shuttle tile during re-entry. |
Punkid8888
| Posted on Wednesday, October 11, 2006 - 11:13 am: |
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I agree with the ceramic coatings. I worked at a speed shop and after a few pulls on a dyno I would remove a spark plug to check it on small block chevy car(very tight and cramped) and if it had the ceramic headers I could rest the back of my hand up against the header within mins and they would be almost room temp. |
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