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1977 911S Headers


Vehicle Information: Model: 911S; Year: 1977; Body Type: Targa; Total Mileage: 110,000;

I just recently replaced my thermal reactors with a set of Bursch headersfor a little more power and cooling. My question relates to the poppingsound I hear upon acceleration. It goes away when I am decelerating. Ihave tightened all the headers to proper torque and checked them forleaks. I did not find any. Is this a normal sound you get when youswitch? I never had this with the heat exchangers and reactors.

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