- How does wrapping headers increase horsepower?
- How much wrap is required to do a set of headers?
- Why only wrap 18 ito 20 inchs of the primaries on a RV or towing vehicle?
- Why do you use only a 1/4 inch overlap and nothing more?
- Does the wrap overheat exhaust components?
- When is it not recommended to use header wrap on cast iron exhaust manifolds on a turbo engine?
- Can the header wrap be used on a catalytic converter?
- What temperature will the wrap withstand?
- Does the header wrap contain asbestos?
- What kind of material is the header wrap made of?
Q. How does wrapping headers increase horsepower?
A. Wrapping the headers maintains exhaust gas heat within the header. This translates into more exhaust flow due to maintaining exhaust temperatures as it flows out of the engine. By improving the scavenging of spent gases, the engine breathes more efficiently. This reduces contamination of gases, thus allowing the engine to develop more power.
Q. How much wrap is required to do a set of headers?
A. Guidelines recommend: (1) 2 inch x 50 ft.roll for a 4 cyl., (2) 2 inch x 50 ft. rolls for a V6 or V8, and (3) 2 inch x 50 ft. rolls for a big block or 180 degree set of headers.
Q. Why only wrap 18 ito 20 inchs of the primaries on a RV or towing vehicle?
A. These vehicles generate a lot more heat than the average automobile with the chemical properties of the wrap assisting with the heat flow, the collector acts as a dump off area for the heat on these applications only. Generally the header manifold blankets are easier to useon these applications and are highly recommended.
Q. Why do you use only a 1/4 inch overlap and nothing more?
A. Using only 1/4 inch overlap draws the heat from the motor but still allows the heat to evenly dissipate through out the system. If you use more than 1/4 inch overlap you may cause fatiguing due to hot spots in your tubes.
Q. Does the wrap overheat exhaust components?
A. This area is not a problem due to the added flow of the exhaust. Increasing flow also increases the amount of heat extracted from the engine and manifold.
Q. When is it not recommended to use header wrap on cast iron exhaust manifolds on a turbo engine?
A. Cracking on stock exhaust manifolds and housing has never been a problem. Manifolds to the turbo can be a problem only if extensive modifications have been made to the castings. These types of castings have a high failure rate even without the wrap being applied to them. This is due to the uneven wall thickness of the castings from the machine work performed to improve flow of the manifold. The heat cycle generated could cause the cast iron to become brittle eventually causing cracking to occur.
Q. Can the header wrap be used on a catalytic converter?
A. YES!
Q. What temperature will the wrap withstand?
A. 2,000 degrees Fahrenheit
Q. Does the header wrap contain asbestos?
A. NO!
Q. What kind of material is the header wrap made of?
A. Highly textured silica based fabric with a patented inorganic coating applied by a proprietary process. A heat conducting coating is applied with a binder to the surface to provide a equal amount of heat distribution. Limit 2,000 degrees Fahrenheit
