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  1. BA n/a to Turbo Math

    Australian Ford's Discussion
    So, been looking at the possibility of turboing my N/A BA barra. Id been doing some research on it and decided to look into some math on it. The BA XR6 has a compression ratio of 9.7:1, and the Ba XR6T has a compression ratio of 8.7:1. I wanted to find out what thickness of head gasket would...
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