[BRAINIAC]

The helper spring arrangement first showed up on the 77 model. Therefore, it was never designed to fit a car with the 74 and earlier style heat exchangers which the SSI's are based on.

This contact really isn't a problem though. The heat exchanger acts as a heat shield for the header pipes inside and has air blown over them constantly. Therefore the spring shouldn't get hot enough to fatigue it.

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Tyson Schmidt
72 911 Cabriolet
92 C-2 Cabriolet