Has anyone tried using aftermarket header wrap to insulate the exhaust manifolds and perhaps increase the life of ignition wires?

http://www.southernrods.com/categori...oduct-827.html

 

Just use good wires, Magnecore 8mm, and don't worry about the heat.

 

I don't think that header wrap would be as effective on exhaust manifolds as it is on headers. Headers are generally fabricated out of metal tubing. In contrast, exhaust manifolds are made from castings. I think the thicker castings, while constricting exhaust flow to some extent, actually insulate better than the headers by far.

I don't think you'd actually hurt anything by wrapping your exhaust manifolds. It may lower under-hood temperatures a little but I would predict it only having a marginal impact on the engine temperature itself.

In the hot-rod sector, I don't see many people using header-wrap. It has a tendency of trapping water and rotting off of the pipes. Almost more of a pain in the butt than it is worth.

 

Mike's right..though Magnecor 7mm (the black ones) is a good as 8mm for a non racer and easier to install. Exhausting wrapping will simply accelerate exhaust rust. If you want to lower engine bay heat, you could ceramic coat your exhaust manifolds and bay pipes.

James

 

Gor to the Magnacor site, the 7mm wires are not as good as the 8mm's.

 

Header wrap apparently helps the engine running cooler