Thread: Custom Hood Insulation

Whats normally referred to as firewall is the sheetmetal betweeen the engine and passenger compartment. So you're correct in calling it hood insulation. I'd call what you're after a "custom hood liner". I would approach a custom upholstery shop to have this done if you're after professional results. Keep in mind that the material (no I don't mean fabric necessarily) used has to withstand the heat there.

If I were going to make one and do it nice, I'd make a buck out of cardboard to the desired shape and fiberglass it, or fabricate it from aluminum. Either way, I would probably attach it differently than the stock insulator attaches due to weight being more. Whatever you put there is a heat-holder over the engine. I run without one by choice, their original purpose was mainly for noise, in my opinion. If its ugly, chunk it.