Volvo Penta Sterndrive Propellers
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Prop Exhaust Types
Prop Splines
Choose your Volvo Penta Sterndrive Engine:
Year(s)
Horsepower
Brand
Engine Description
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Prop Exhaust Types
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Thru-hub Exhaust
Most outboard & stern drive engines vent exhaust thru the prop hub.
You have a thru-hub exhaust if there are exhaust holes on the engine gearcase around the prop shaft. |
Thru-hub has holes around the prop hub.
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Non Thru-hub Exhaust
Non thru-hub exhaust systems are found mostly on low horsepower motors.
You have a non thru-hub exhaust if there are NO exhaust holes on the engine gearcase around the prop shaft. |
Non thru-hub is solid around the prop hub.
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Prop Splines
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Prop splines are the little teeth you see on your prop shaft and inside the prop hub. The number of splines on the shaft and inside the prop must match for the prop to fit your boat. A Pin Drive prop application has no splines. The prop is secured to a smooth prop shaft with a pin through the shaft. |
Count the teeth on your prop shaft to determine spline count.
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Propeller Help Guide
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Propeller Help Guide
Propeller Basics
How To Choose A Prop Diameter Pitch Cupping Rake Ventilation Cavitation We tell you everything you need to know about props from cupping to ventilation. |
Prop Characteristics
3 Blades VS. 4 Splines Left-Handed Props Performance Exhaust Aluminum vs. Stainless Steel If you want to modify your boat's performance, consider the above before making your selection. |
Determining RPM's
Effect of pitch on RPM Test for Maximum RPM For safety and efficient performance, it is critical that your engine operates within the RPM range recommended by the manufacturer. |
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