IIRC, it was about 22 mm for my 95 Mystique. Of course, I may not be recalling correctly. I believe that works out to be about 0.87 inches, or something like that. I can check in my manual tonight, if you don't get the information before then.
95 Contour Zetec, ATX (wrecked, sitting in the barn)
95 Mystique Zetec, MTX
2000 Taurus SEL 3.0L Duratec
1994 Crown Victoria LX 4.6 V8
1993 Chevy Silverado 4.3 V6
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