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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..
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.
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.
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.