Header Heat Wrap

[pdxrealtor]

I needed to shield a couple plug wires from the header pipe.

I got some pipe wrap and applied it to just the section that needed protection.

It's burning 2x as hot now on the wrapped section. About 500*. Right before and right after the wrap it's mid 200s. If I take the wrap off it's mid 200s.

I thought header wrap was supposed to insulate the pipe, blocking the heat.

Anyone know why it's burning twice as hot in that one wrapped section? I need that section to be as cool as possible for the spark plug wires.

Really baffled here.... HELP!