SEC-CM^2/CM^3

ENGINE STROKE 68 EXHAUST PORT 1 TOTAL AREA 1670.00 TOTAL EXHAUST PORT TIME AREA 0.000182ENGINE BORE 81 EXHAUST PORT 2 TOTAL AREA TOTAL TRANSFER PORT TIME AREA 0.000116

CONNECTING ROD LENGTH 134 TRANSFER PORT 1 TOTAL AREA 730.00 TOTAL BOOST PORT TIME AREA 0.000000SQUISH CLEARANCE 1 TRANSFER PORT 2 TOTAL AREA 352.00 TOTAL TRANSFER +BOOST TA 0.000116

CYLINDER HEAD VOLUME 20.3 TRANSFER PORT 3 TOTAL AREA 478.00 TOTAL INLET PORT TIME AREA 0.000330ENGINE RPM 8300 TRANSFER PORT 4 TOTAL AREA 0.00 TOTAL ROTARY VALVE TA 0.000000

TOP OF EXHAUST TO TOP OF BARREL 30.93 BOOST PORT TOTAL AREA 0.00DECK HEIGHT 0.1 INLET PORT TOTAL AREA 16.00 MEAN ROTARY VALVE TA 0

NUMBER OF CYLINDERS 2 MEAN INLET PORT TIME AREA 0.000248TRANSFER OPENS DEGREES ATDC 115 EXHAUST PORT 1 MEAN AREA 1306.00 MEAN EXHAUST PORT TIME AREA 0.000142

TRANSFER FULLY OPEN DEGREES ATDC 180 EXHAUST PORT 2 MEAN AREA MEAN TRANSFER PORT TIME AREA 0.000089EXHAUST OPENS DEGRESS ATDC 85 TRANSFER PORT 1 MEAN AREA 544.00 MEAN BOOST PORT TIME AREA 0.000000

EXHAUST FULLY OPEN DEGREES ATDC 180 TRANSFER PORT 2 MEAN AREA 270.00 TRANSFER +BOOST MEAN TA 0.000089BOOST OPENS DEGREES ATDC 119.5 TRANSFER PORT 3 MEAN AREA 374.00

BOOST FULLY OPEN DEGRESS ATDC 180 TRANSFER PORT 4 MEAN AREA 0.00 ACTUAL BLOWDOWN TIME AREA 0.001952INLET PORT OPENS DEGREES ATDC 0 BOOST PORT MEAN AREA 0.00

INLET FULLY OPEN DEGREES ATDC 0 INLET PORT MEAN AREA 12.00 BLOWDOWN - degrees 30.00ROTARY VALVE OPENS BTDC 0 EXHAUST BLOWDOWN AREA 1134.00 EXHAUST ANGLE AREA 7.089714ROTARY VALVE CLOSE ATDC 0 ROTARY VALVE INLET AREA TRANSFER ANGLE AREA 4.412571

ROTARY MEAN INLET AREA BOOST ANGLE AREA 0.000000ENGINE DISPLACEMENT 700 TARGET MEAN PORT TIME AREAS TRANSFER + BOOST ANGLE AREA 4.412571

CYLINDER DISPLACEMENT 350.00 INTAKE - REED VALVE 15.41429 INLET ANGLE AREA 0.123429COMBUSTION CHAMBER VOLUME 20.82 EXHAUST PORT(S) 0.000154

TOTAL TRANSFER PORT AREA 15.60 TRANSFER PORTS 0.000827 AVERAGE EXHAUST TA 0.000162TOTAL EXHAUST AREA 16.70 INTAKE - PISTON PORT 0.000169 AVERAGE TRANSFER TA 0.000102

TOTAL BOOST PORT AREA 0.00 INTAKE - ROTARY VALVE 0.000211 EXHAUST BLOWDOWN TA 0.001952TOTAL INLET AREA 16.00 BLOWDOWN DEGREES 31.63 AVERAGE INLET TA 0.000289

CORRECTED COMPRESSION RATIO 7.66 INLET OPEN DURATION 360.00 AVERAGE ROTARY TA 0MEAN TOTAL EXHAUST AREA 13.06 EXHAUST OPEN DURATION 190.00 MEAN TOTAL TRANSFER AREA 11.88 TRANSFER OPEN DURATION 130.00 SUGGESTED CARB SIZE 45.81MEAN TOTAL BOOST AREA 0.00 BOOST OPEN DURATION 121.00 PISTON SPEED (FPS) 3689MEAN TOTAL INLET AREA 0.12 ROTARY INLET DURATION 0.00 Uncorrected compression Ratio 16.814554893

Brake Mean Effective Pressure 174.52667814ENTER MM FROM TOP OF BORE 33 ENTER DEGREES ATDC 77 ACTUAL CRANKSHAFT HP 78PISTON POSITION CALCULATION------------------ MM ATDC FROM DEGREES 30.6114 PISTON ACCELERATION 105630.68658PISTON POSITION CALCULATION------------------ DEGREES ATDC FROM MM 81.0699

BUGS OR COMMENTS WELCOME. EMAIL kchuk@mag-net.com Based on writings by MacDizzy

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ANGLE AREA REFERENCE CHART

ANGLE AREA REFERENCE