However, for higher horsepower engines or supercharged/turbocharged applications, the normal exhaust temp can be much higher, making HP Boots™ spark plug wire protectors the better choice. Under a heavy load or increased work, this temperature can double - our Lava Boot spark plug wire heat shields can still manage the heat. HP Boots™ spark plug protectors will not slide up the spark plug meaning no ring is needed to keep them in place.Ī typical street engine with headers will normally maintain underhood temperatures between 300 and 500 degrees at the header tube closest to the spark plugs. HP Boots™ can withstand constant 1,800-degree temps and up to 2,200-degree intermittent temps.
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They are not very flexible, so we make pre-formed straight, 90-degree, and 135-degree configurations. HP Boots™ spark plug boot protectors combine 304 stainless steel and ceramic insulation to reflect heat and provide a heat barrier for extreme conditions. These spark plug wire heat shields can withstand temperatures of 1,200-degree Fahrenheit constant and 2,000-degree intermittent. Lava Boot Shields™ also include the same innovative Heatshield Products’ rings found in our Insul-Boots™ to hold spark plug boots in place. The material in our Lava Boot Shields™ expand and stretch, making it easy to install over straight, 90-degree, or 135-degree boots. Lava Boot Shields™ have a dual-wall design similar to the Insul-Boots™ spark plug protectors, but these spark plug wire heat shields are made from a unique high-temp basalt material, so they are very flexible. Insul-Boots™ spark plug wire protector can withstand temperatures of 1,200-degree Fahrenheit constant and 2,000-degree intermittent, and they are available in a variety of colors. Without it, the boots will walk up the wire over time, exposing the spark plug to the heat you’re trying to protect them from. To keep the boots in place, we designed an innovative Heatshield Products’ ring that goes between the cylinder head and the tip of the boot. Insul-Boots™ spark plug boot protectors are made from a conventional thermal-barrier material that helps reflect heat. Which one to use in your application will depend on the type of engine you have, how much heat is produced, and what type of damage you need protection from. Heatshield Products offers several automotive heat shields and spark plug wire protection products designed to protect wires and spark plug boots from heat damage.
How to install spark plug wire heat shields 350 vortex full#
The benefit of a thermal-barrier spark plug wire shield is that heat-induced electrical resistance will be reduced significantly, meaning your ignition system won’t have to work as hard, and the full spark energy will be delivered to the spark plugs.
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That means it takes more time for the energy to travel through the wire, and a certain amount of the energy is restricted and never actually reaches the spark plug. Whenever a wire that conducts electrical energy is exposed to high heat, the resistance of that wire increases. This uncontrolled detonation can lead to serious engine damage and even underhood fire.Ĭomplete burn-through is not the only problem to consider when looking at spark plug wire heat shields. This could cause you to lose a race or end up stuck on the side of the road - not to mention the not so small fact that it could also potentially cause engine detonation or backfire situation due to a buildup of unburnt fuel in various cylinders and intake runners. Second, when a spark plug boot melts, it can create an ignition misfire/no-fire problem. First, you have the cost of replacing the wires, and in race applications could easily cost more than $100. Types of Spark Plug Damage and Why Spark Plug Wire Heat Shields Workīefore figuring out the best spark plug wire and spark plug boot protectors for your street or racecar, let’s look at the types of potential damage and associated costs when hot exhaust and spark plug wires share close quarters. This article will help you pick the best spark plug wire and spark plug boot heat shields and sleeves, guiding you through the maze of protection options so you can make a choice that is both cost-effective and right for you. Almost anyone with headers on their car, truck or racecar has experienced burned spark plug wires or has melted through a spark plug boot or two.