Keep heat in or keep heat out?

Kool Wrap has products that fall into both categories. If you are a plumber and you are running hot water pipes, you often wrap the copper hot water pipes in some sort of lagging or fibreglass wrap to prevent the hot water cooling down before it gets to the taps. This is actually saving energy.

Our Kool Wrap range of exhaust wraps and tapes do the same task and have often been used in the heating and cooling industry.

Our heat sleeves and aluminium sheeting do the opposite. They reflect radiant heat and the inner fibreglass matting insulates the hose or cable being protected.

Can Exhaust Wrap Damage Extractors or Exhaust Systems?

In short, the answer is yes and no. It is possible that racers such as NASCAR in the USA or Endurance racers may experience overheated exhausts pipes, but in 99% applications, header or exhaust wrap will NOT damage exhaust pipes.

All mild steel exhaust pipes will eventually rust and the best way to extend the life of your exhaust pipes is to coat them first with a high temp exhaust paint or a silicone based high temperature paint.

What is the difference between convection, conduction and radiation?

In simple terms, conduction is the transfer of heat along an object. In automotive terms this could be heat travelling through an engine. A carburettor or intake manifold can get hot due to the heated molecules in the metal around a combustion chamber passing the heat onto the surrounding metal.

Convection is where the heat is transferred to a fluid such as air or a liquid is heated and then carries the heat away. Naturally a car radiator carries out this process along with most home heaters.

Radiation or thermal radiation transfers heat by the emission of electromagnetic waves. Holding your hands in front of a fire is an example of radiation or radiated heat. Electric bar heaters do the same thing.

The theories of convention, conduction and radiation are nicely explained in this article.


What is the difference in the Kool Wrap sleeves? You have seamless, stitched, adhesive and hook and loop style sleeves.

Our genuine Kool Wrap heat sleeves are perfect for protecting fuel lines, hoses, cables, brake lines, power steer lines and air conditioning pipes.

If you are protecting a simple hose or throttle cable, it is relatively easy to push the hose or cable down through the centre of either our seamless sleeve or our Kevlar stitches sleeve.

If, on the other hand, you want to protect wiring or an air conditioning pipe, then it is far easier to use one of our sleeves with an open seam. The adhesive sleeves have a peel off backing to reveal an adhesive seem. You simply wrap the sleeve around the wiring or pipe without removing them.

You can use our Hook & Loop seem sleeve if you may want to open the sleeve at a later time to check wiring etc.

What is the advantage of using a Turbo Blanket or Beanie?

Rapidly expanding exhaust gas is forced out of the engines combustion chamber by the process of combustion and the upward movement of the piston. If the exhaust gas is allowed to cool (dissipate heat) it doesn’t expand as rapidly. It is the expansion and velocity of the exhaust gas that spins the compressor wheel of a turbocharger.

Heat is absorbed by the cast iron turbo exhaust housing and is transferred into the air in the engine bay.

By wrapping the turbo exhaust housing in a genuine Kool Wrap exhaust blanket or beanie, you are keeping the heat inside the compressor housing where it belongs. This means that the turbo will spool up faster and make more turbo boost and potentially more power.

The other advantage is that the engine bay remains cooler and probably the engine intake temperatures. This can prevent melted hoses, cables and wiring.