2005 Ski-Doo Racing Handbook, Page 137Get this manual
SECTION 05ENGINE PREPARATION
SATURATION PRESSURE (CHART 1)TEMP(F)40302010 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 S.P= SATURATION PRESSURE (in-Hg) .004 .008 .012 .020 .040 .055 .070 .090 .110 .140 .170 .208 .247 .314 .380 .450 .521 .630 .739 .884 1.030 1.225 1.420 1.675 1.930