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Old 07-20-2005, 07:06 AM   #2
CirrusSR22
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Join Date: Nov 2004
Location: Minneapolis
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Ahh, dang. I just had my owners manual out earlier today, so I could have given you the engine spec stuff. (exact redline, bore and stroke) I believe the M42 (1995 only) is 84mm x 81mm, and the M44 (1996+) is 85mm x 83.5mm

Both M42 and M44 are 10:1 compression ratios.

5-Speed gear ratios are: 4.23, 2.52, 1.66, 1.22, 1.00. Reverse is 4.04. The 5-Speed differential has 3.45 gears. LSD was an option on some, so they're out there to be found.
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