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I have put aluminium sheets on the foot boxes with a 5-7mm air gap. Many learned people have done the same thing with mirror finish stainless and have not had any heat issues with this setup. I used 1.2mm aluminium, a lot of the stainless setups are 0.9mm stainless.
I used aluminium because according to my understanding it will reflect heat better than stainless. The mirror finish on the stainless does nothing to aid reflective properties, it is purely for aesthetics if that is your bling thing.
My setup is of course as yet untested as I haven't even fired my engine yet.
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BUILD-BLOG: http://cobrablog.holnet.net
Ben in AU
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