I've been thinking about this one for a long time but a bit of new info. has come my way recently. My 140HP '00 Miata has a 55mm t-body on it. A 170HP SVT Focus has a 66mm t-body on it. A 140HP Zetec has a 55mm t-body on it. A 170HP non SVT Duratec has a 54mm t-body on it. The upgrade SVT Duratec has a 60mm t-body on it.
At least to my way of thinking both Duratec t-bodies are undersized. Anyone have some method of calculating the "correct" size?
Redcoat Raceworks. Performance parts and custom fabricating for Contours, Mystiques and Cougars. Specializing in chassis and suspension parts. Custom end links, control arms, strut tower bars, engine torque braces, etc.
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