Thermal Wrap for headers! CARS, motocycles, etc Cars Philippines

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

INSTALATION

EXHAUST INSULATING WRAP

STEP 1: Determine the length of each tube by measuring from the exhaust port flange to the collector. (see chart for material required). (IMPORTANT- For each and every bend, add 8 inches more to overall length of material before cutting.

STEP 2: CAREFULLY cut material for each tube and collector.

STEP 3: Using a shallow pan of water, moisten wrap to make more pliable, DO NOT SOAK! Wrap material around the top of the first exhaust port flange and secure with Snap Strap or a hose clamp. Wrap tight, neatly and overlap 1/4". Complete all tubes and collector. NOTE: WHEN TUBES ARE CLOSE FOR EASY WRAPPING USE A FLAT BLADE SCREWDRIVER TO SEPARATE TUBES ENOUGH TO ALLOW MATERIAL TO SLIDE THROUGH.

STEP 4: Thoroughly dry wrap, setting in a sunny area or near a heat source.

STEP 5: Apply Thermo-Tec's Hi-Heat Coating or Hi-TEMP VHT after wrap has dried. The coating increases the life of the material, changes the color and seals the pores allowing less penetration of liquids.  DO NOT USE HI-PRESSURE WASH ON MATERIAL! Use a common garden hose without nozzle attachment.

CAUTION: Motor Homes/Towing Vehicles wrap 20" of primary, do not wrap collector. Do not start engine unless in a well ventilated area. Due to processing procedure, very small amounts of oil and residue will cause material to smoke up to 30 minutes until material is cured. Tape should not smoke again after cured. Due to fiberglass like nature of this material.

RACERS INFO: Because the carburetor is receiving additional vacuum, in many cases, stepping down 1 to 2 steps in the secondary and primary jets may be necessary. Read plugs and adjust accordingly.

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