Carb Comparisons based on Engine CC's & RPM
Flow / Area @ RPM
700 Yamaha cc's per minute/area 33 mm = 855 sq.mm x 3 cyl = 2565 @ 8800 rpm = 1201
36 mm = 1017 sq.mm x 3 cyl = 3051 @ 8800 rpm = 1010
38 mm = 1134 sq.mm x 3 cyl = 3405 @ 8800 rpm = 906
700 Polaris
39.5 mm = 1225 sq.mm x 2 cyl = 2450 @ 8100 rpm = 1157
700 Arctic Cat
44 mm = 1520 sq.mm x 2cyl = 3040 @ 8100 rpm = 933
790 Big Bore Cat
44 mm = 1520 sq.mm x 2 cyl = 3040 @ 8100 rpm =1053
790 Big Bore Cat
45 mm = 1590 sq.mm x 2 cyl = 3180 @ 8100 rpm = 1006
906 Union Bay
45.5 mm = 1625 sq.mm x 2 cyl = 3250 @ 8300 rpm = 1029
| 700 Yamaha | |
| 33 mm = 855 sq.mm x 3 cyl = 2565 | |
| 36 mm = 1017 sq.mm x 3 cyl = 3051 | |
| 38 mm = 1134 sq.mm x 3 cyl = 3405 | |
| 700 Polaris | |
| 39.5 mm = 1225 sq.mm x 2 cyl = 2450 | |
| 700 Arctic Cat | |
| 44 mm = 1520 sq.mm x 2cyl = 3040 | |
| 790 Big Bore Cat | |
| 44 mm = 1520 sq.mm x 2 cyl = 3040 | |
| 790 Big Bore Cat | |
| 45 mm = 1590 sq.mm x 2 cyl = 3180 | |
| 906 Union Bay | |
| 45.5 mm = 1625 sq.mm x 2 cyl = 3250 |
Notes: Based on ½ engine cc's
Variation = Yamy @ 50% - Cat @ 47.6% for effective stroke.
3% Loss of HP & Air Density for each 1000 ft. of Elevation Above Sea Level
How do you get 15% less air (5000' elev.) thru your carbs??
That's why a increase in carb size helps maintain your
horsepower for riding above 5000 feet elevation.
This Helps! Open Airbox + Cold Air Intake + Larger Carbs
Quality Workmanship
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