Suggested engine operating speed ranges for 2009 E-TEC motors
| Model | Recommended Operating Range | Optimum RPM Range |
|---|---|---|
| 25 HP | 5000 - 6000 | 5400 - 5800 |
| 30 HP | 5000 - 6000 | 5400 - 5800 |
| 40 HP | 5000 - 6000 | 5400 - 5600 |
| 50 HP | 5500 - 6000 | 5600 - 5750 |
| 60 HP | 5500 - 6000 | 5600 - 5750 |
| 65 HP Commercial | 5500 - 6000 | 5600 - 5750 |
| 75 HP | 4500 - 5500 | 5000 - 5200 |
| 90 HP | 4500 - 5500 | 5000 - 5200 |
| 115 HP (60° V4) | 5500 - 6000 | 5600 - 5700 |
| 115 H.O. (60° V4) | 5500 - 6000 | 5500 - 5650 |
| 130 HP (60° V4) | 5500 - 6000 | 5500 - 5650 |
| 150 HP (60° V6) | 4850 - 5850 | 5500 - 5600 |
| 150 H.O. (60° V6) | 4850 - 5850 | 5500 - 5600 |
| 175 HP (60° V6) | 4850 - 5850 | 5500 - 5600 |
| 200 HP (60° V6) | 4850 - 5850 | 5600 - 5850 |
| 200 H.O. (3.3 L 90° V6) | 4500 - 5800 | 5500 - 5600 |
| 225 HP (3.3 L 90° V6) | 4500 - 5800 | 5500 - 5600 |
| 225 H.O. (3.3 L 90° V6) | 4500 - 5800 | 5500 - 5600 |
| 250 HP (3.3 L 90° V6) | 4500 - 5800 | 5500 - 5600 |
| 250 H.O. (3.4 L 90° V6) | 4500 - 5800 | 5500 - 5600 |
| 300 HP (3.4 L 90° V6) | 5000 - 6000 | 5500 - 5600 |
The E-TEC engine speed ranges shown in the column "Optimum RPM Range" are believed to be the engine speeds at which the particular E-TEC engine develops its peak horsepower. Selection of a propeller which puts the E-TEC engine into this speed range at wide-open-throttle should produce the best performance.
This chart is adapted from a widely published chart which is believed to be from Bombardier. The chart is often seen in the form of a JPEG image of this text. Presentation of text as rasterized images is an inefficient coding method.
DISCLAIMER: This information is believed to be accurate but there is no guarantee. We do our best!
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Last modified: Thursday, 11-Jun-2009 08:24:48 EDT
Author: James W. Hebert
This article first appeared January 2007.