Monthly Archives: November 2016

  1. Why Flex Pipes Should Be Wrapped Separately

    For this installment of the Heatshield Products blog, we wanted to bring you an easy tech tip on installing exhaust wrap on your exhaust system if you have a flex pipe as part of the pipes.

    No matter what type of exhaust wrap you are installing, a section of flex pipe in your exhaust system should be wrapped separately from normal fixed pipe sections. This means that as you install the wrap, you should stop short of the flex pipe, terminate the wrap and secure it, then begin a new flex pipe wrap section. Why should you do this?

    ABOVE: Whether you're installing an exhaust patch or product like Heatshield Armor, it's always best to wrap any sections of flex pipe with separate pieces of either thermal barrier material,

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  2. Using Thermal Barriers to Prevent Vapor Lock

    Whether you have a carburetor or fuel-injection in your vehicle, vapor lock can bring your vehicle to a standstill, causing hours of frustration. If you’re a racer, it can put the car on the trailer well before you’re ready to leave the track. But proper use of thermal barriers is helpful in preventing vapor lock, no matter how hot the day gets.


    Vapor lock happens when the temperature of the fuel gets high enough to transform liquid into a vapor state. Fuel pumps are designed to pump liquid, not air, and the increased pressure inside the fuel lines keeps the fuel pump from being able to keep the fuel moving, even if ti is liquid at the pump. The result is fuel starvation causing the engine to run rough or completely stall. It typically happens during summer months, when high ambient temps combined with the heat of a vehicle’s engine and exhaust is transferred to the fuel lines.


    The solution is to protect the fuel lines from getting hot.

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