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					Originally Posted by Bob K  I have these guards around my pipes and they only get to about 98 degrees. The header reaches 280 plus and the rest of the pipe hits around 220-240. 
I can lay my hand or calf on the guard without a burn. Granted I just got the car and only had it out a couple of times, but each time I checked with a heat gun and it was always under 100 degrees.
https://vintage-motorsports.com/piwi...9/category/853 | 
	
 Is that degrees Fahrenheit?   If so that is one of the coolest running motors I’ve heard of.  My headers at idle are in the 400 - 500 degree range.  I have undercar exhaust but I’ve measured my mufflers at over 400 degrees after shutting off from a drive.
I have an old Corvette with chambered side exhaust and the GM aluminum guards.  They fit fairly close to the pipes and get a little warm but they have a layer of fiberglass glued to the inside that’s about 1/8-3/16” thick for an insulator.  I would be surprised if shields do much good without some sort of insulator or a large air space.