TEST DATA SHEET DATE  11/18/09
TEST DESCRIPTION INTAKE #2 CRAWFORD 4 PORT HEAD FOR MODEL A FORD    
IN.1  VALVE DIA 1.700 SQ. IN. 2.178 STEM DIAMETER 0.341
IN.2 VALVE DIA 1.383 SQ.IN. 1.411 COMBINED VALVE AREA: 3.589 SQ. IN.
ORF. FLOW @ 25" 249.96 TST.CORR.FACTOR 0.952
VALVE L/D RATIO 0.050 0.100 0.150 0.200 0.250 0.300 0.350 0.400
INTAKE VALVE LIFT 0.179 0.359 0.538 0.718 0.897
CORR FLOW RANGE IN. 034.28 068.17 143.77 284.69 426.56 567.47                            
TEST NUMBER 1.000 2.000 3.000 4.000 5.000 6.000 7.000 8.000 9.000 ######
TEST PRESSURE 28.00 28.00 28.00 28.00 28.00 28.00 28.00 28.00 28.00 28.00
IN. LIFT 0.089 0.179 0.269 0.359 0.448 0.538 0.628 0.718
FLOW RANGE 143.77 143.77 284.69 284.69 284.69 284.69 284.69 284.69 284.69 284.69
FLOWMETER 056.00 084.40 047.00 047.70 047.80 048.00    
CHART CFM 080.51 121.34 133.80 135.80 136.08 136.65 000.00 000.00 000.00 000.00
LEAKAGE CFM 000.00 000.00 000.00 000.00 000.00 000.00 000.00 000.00 000.00 000.00
`   
                                                                                   
CORRECTED 080.51 121.34 133.80 135.80 136.08 136.65 000.00 000.00 000.00 000.00
TEST CFM
CALCULATED POTENTIAL HORSEPOWER 140.55 @ 3596 RPM
CORR.CFM/SQ. IN.
INTAKE 022.43 033.81 037.28 037.84 037.92 038.08 000.00 000.00 000.00 000.00
POT CFM/SQ IN 11.40 22.80 34.20 45.60 57.10 68.60 91.80 98.00
%FLOW RATING    
INTAKE 196.78 148.29 109.01 082.98 066.40 055.50 000.00 000.00
NOTES: DUAL INTAKE VALVES, 1.700" & 1.383"
4 INTAKE PORTS, 1.300" DIAMETER
INTAKE PORT BLENDED INTO DUAL BOWL AREA.
3 ANGLE VALVE JOB w HAND RADIUSED SEATS INTO BOWL AREA
INTAKE VALVE: 12 DEGREE BACKSIDE, 3/8" RADIUS
45 DEGREE X .095" FACE, 25 DEGREE BACK CUT
INTAKE SEAT:  44 DEGREE X .075", 20 DEGREE TOP CUT, 60 DEGREE UNDERCUT
HAND RADIUSED SEAT INTO BOWL AREA
RADIUSED ADAPTOR INSTALLED
SUPER LOW LIFT FLOW, THEN BECOMES RESTRICTED BY PORT SIZE

RETURN TO FRONT PAGE