Hello today I will be going over exhaust wrap. The kind that you would use to try and stop the heat from escaping the headers on the car.

What is exhaust wrap?

Exhaust wrap is a tight wrap that will cool down the engine of the vehicle when wrapped around the headers. This is mainly used on high power engines such as street cars like my 1983 cutlass supreme with the 350 in it.


That picture shows the passenger side of the engine bay. Notice that when putting this on do not put it on loosely otherwise it will not insulate the heat correctly.

Another thing I did not know is that you should soak them in water before putting the wrap on. It makes the wrap tighter and when you start the engine it doesn’t smell burnt right away because it is basically molding to the headers.


If you would to get the exhaust wrap I got that exact one for my cutlass it works great just wish I knew to get it wet first.

Heat of the engine bay

Now that we have gone over the exhaust wrap we should go over the different types of heat that could be causing the engine bay to be so hot.

First we have something called Radiant heat is when a hot part radiates heat to another part that is not directly touching it.

Great example my spark plugs were starting to melt because of how hot the headers were getting so I actually put the wrap on both(do not get spark plug wraps wet they are just slip on).

Then we have Convective heat which is when a part overheats because of the contact of a hot liquid or gas. This could be pointed towards a radiator overheating because not enough liquid so it gets extremely hot with the little amount it has in it.

Lastly we have Conductive heat which is when heat travels from one part to another through direct contact. Such as from the engine to the headers throughout the exhaust.

Now that the basic forms of heat have been introduced lets talk about the right way to go about this. So now we need to find the correct heat products for the vehicle we have some options but there is always pros and cons to any kind of heat solutions.

Such as a solution fort Radiant heat issues will not help in this case solve the problems with conductive heat. Make sure the product you get is right for you.

Temperature of the engine

Now going over all of this you need to know what product you are going to get. The wraps all have different temperatures that can withstand heat.

Don’t buy some cheap heat wrap and watch it only hold up until the engine has now gotten warm then the heat wrap does little to no good because it was a cheap brand not being able to withstand what you wanted.

Most brands will have the heat temperature label on the back and will say how well they are able to resist. In my eyes if you want it done correctly just get the highest heat resistant then you have nothing to worry about.

Materials in the wrap

Now to determine the correct exhaust wrap make sure the wrap you are using is correct for the situation at hand. Make sure to check out the rand of products and the difference in the thermal wrap also material.

Some of the materials are

Basalt, Fiberglass, Stainless steel, Aluminum, Silica.

Out of these make sure that the choice you make is right for the car.

Wrap looks

Now in some cases the wrap could provide a clean look underneath the hood with a roaring engine. That is not the only case these wraps main purpose should be to give the car a better chance at performance.

With the exhaust wrap it could help gain better gas mileage, boost in horsepower and in torque, lower the emissions, and may also extend the engines lifespan.


Now we have gone over the basics of the exhaust wrap. Make sure that the wrap you choose is the one best suited for the situation at hand. I suggest getting the best heat resistant so that you know the best is on there and have no worries at all.

That should conclude the pros and cons of the exhaust wrap the only real cons is if you want to change the headers then that all has to be undone and maybe the style of the engine but that is all. Thank you for reading this and I hope it helps in the journey into maintaining your own vehicle.

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