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Heat Shield Between Sidepipe and Frame?

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Old Aug 1, 2006 | 07:08 PM
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Default Heat Shield Between Sidepipe and Frame?

Was flipping through a GM parts catalog and came across an exploded drawing of '69 factory sidepipes. The drawing show a heatshield (actually called an insulator) that runs between the pipe and the frame.[IMG][/IMG]This image is pretty small I realize, but it's the 2 lowest pieces pictured in the drawing. One elongated piece, the length of the wider part of the pipe and a smaller piece that appears to run in front of the rear wheelwell.

Is that "insulator" necessary to avoid frame damage? And why do you never see it (in catalogs) sold with the factory sidepipes? Guess I'm wondering if I go that route am I going to have to fab a shield..

What's the story?

kdlp
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Old Aug 1, 2006 | 07:23 PM
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I wouldn't think that the sidepipes could really get hot enough to damage the frame. The frame is pretty damn thick, after all. Ever had to drill holes in yours? It's pretty tough.
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Old Aug 1, 2006 | 07:48 PM
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Didn't make sense to me either unless metal fatigue was an issue at high mileage...

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Old Aug 2, 2006 | 05:09 AM
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I think that was brought up before. I think the opinion was that that piece would nee to be placed on the frame before the body is lowered.
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Old Aug 2, 2006 | 05:33 AM
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What is it made out of? I need to separate my body to replace body mounts and I'm planning on going with sidepipes in the near future...
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Old Aug 2, 2006 | 08:19 AM
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Originally Posted by I'm Batman
What is it made out of? I need to separate my body to replace body mounts and I'm planning on going with sidepipes in the near future...
I don't know... and looking at the sheet that's pictured above there are no part numbers for either piece.

Anyone have any other info?

kdlp
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Old Aug 2, 2006 | 12:01 PM
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Originally Posted by kdlp
I don't know... and looking at the sheet that's pictured above there are no part numbers for either piece.

Anyone have any other info?

kdlp
It's foil covered fiberglass, and yes, it has to be put over the frame before the body is dropped.

There are also several rubber/styrofoam? type smaller insulators used too. Chuck
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Old Aug 2, 2006 | 12:10 PM
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Originally Posted by kdlp
Is that "insulator" necessary to avoid frame damage? And why do you never see it (in catalogs) sold with the factory sidepipes? Guess I'm wondering if I go that route am I going to have to fab a shield..

kdlp
The insulation is to help keep heat out of the car. Since the sidepipes run along the frame, once the frame gets hot it will transfer into the cabin, mostly at the door sill. The insulation is available from the major Corvette parts suppliers but as people have noted they are not really necessary and you will not cause any damage to the frame or body (car body that is!) if you don't use them. You might notice that the door sill is getting warmer than before though.

Regards,

Jay
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Old Aug 2, 2006 | 04:14 PM
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Same kind of stuff used for the transmission heat shield. Probably keeps you from burning your leg on the door sills.
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Old Aug 2, 2006 | 05:04 PM
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From: Juneau AK
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Ya, OK... am starting to get the picture now. The drawing makes it look like a piece of sheet metal with a break in it when in fact it's just a foil type reflecant. I should be able to find something to do the job if I end up going with the factory pipes.

Thanks for the education.

kdlp
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Old Aug 2, 2006 | 05:22 PM
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Here's a pic from the Paragon catalog. Chuck

http://www.corvette-paragon.com/cata...3-678C332D2DC0
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