Friday, January 10, 2014
Do Exhaust Insulating Wraps Work
Exhaust "headers" are replacement manifolds designed to increase your engines performance. In racing or performance applications both automotive and motorcycle, they are often wrapped with a heat shielding substance. There are a few simple reasons to wrap your exhaust.
Under Hood Temperatures
In automotive applications, exhaust wraparound headers helps reduce under hood temperatures allowing for cooler air intake. Cooler air intake produces higher horsepower, as cooler air contains more oxygen, which aids the burning process in the cylinder. Exhaust wraps under the hood can reduce temperatures significantly.
Velocity
Theoretically, exhaust wrap helps contain exhaust heat, making the exhaust gases move more rapidly away from the engine and towards the tail pipe. This increased exhaust velocity increases potential horsepower by evacuating the cylinder more quickly and allowing the piston to move upward with less resistance.
Scavenging
The velocity also helps with scavenging, or the removal of combustion waste or exhaust from the cylinder more completely. This results in a cleaner, faster burn of the fuel air mix on the next piston stroke. The increased scavenging results in more efficient combustion and potential horsepower.
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