What do you all think of stainless steel heat sheilds?

I have one but i havent put it back on since i fitted the GRS,i feel its going to stop the heat from escaping through the vents properly and keep too much heat floating around the back of the radiator...? This being a bad thing,but then why is it called a heat sheild?Whats it sheilding the heat from?The spark plugs?

Cheers

 

Its stopping up from rising up to the inlet charge carrier.................


Although I dont see why ford attached it to the cam cover, had they never thought of heatsoak from there???

 

I got one with small vents in it,think it's meant to shield heat from your charge carrier on top of the engine.

 

Cant see a prob with putting it back on then

Cheers lads Oh and ksa74f/231bhp i sent that cheque off this morning for you!