How to Use a Header Wrap
Header wrap can be an effective method of reducing heat soak in an engine that uses tubular headers. As the component that's bolted directly to the engine's head and is responsible for routing spent exhaust gasses to the exhaust system, headers are subject to extreme heat. This heat can cause problems for nearby components and can also sap power from the engine. To reduce the heat headers produce, they are often wrapped with insulating material, or header wrap. Does this Spark an idea?
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Things You'll Need
- Socket set and ratchet (if removing headers)
- Header wrap
- Adhesive header tape
- Water
Instructions
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Remove the headers (if they are installed) from the engine bay if possible. This will make it much easier to wrap them. Consult a workshop manual for your specific car if you are unsure of how to remove them.
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2
Clean off the headers completely with a mild cleaner and dry them. Wipe them down with a fresh towel and mineral spirits to remove any oil and residues.
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3
Fill a small container with water so you can wet the header tape prior to installation. Alternatively, you can use a spray bottle filled with water to soak the header tape. Wetting the wrap will make it easier to manipulate the tape around the headers and reduce the amount of fibers that come off. Not all brands of header wrap require this, so consult the directions.
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Begin installing the header wrap at the end of the header that bolts to the engine. Loop the wrap around the end of each header pipe twice, overlapping about 1/4 inch. Use adhesive header tape or a hose clamp to secure the wrap in place.
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Wrap the remainder of the header pipe, ensuring that the wrap overlaps by about 1/4-inch. Pull the wrap tightly as you go so the tension is maintained. Stop and re-wrap it if it becomes loose.
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Wrap the areas where the header tubes come together as one if you cannot fit the wrap between them. Each tube will be wrapped separately until they meet up, at which point you should wrap the larger tube that they form. Use adhesive tape or a hose clamp at the end to hold the wrap in place. Reinstall the headers if they were removed.
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