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Posts: 5874
| Suzuki's have very high numerically ratio gearing. In your case, you have a inline 4 cyl, with a 2.50:1 ratio. To compare, a Merc 150 4S has 1.92:1 and Yamaha has 2.00:1. Big difference when it comes to propping.
Here's a list of the available Suzuki props for your motor. Hard to believe you are over-revving a 25P, unless the diameter is smaller than the 14 1/2" as listed below. How far are you trimming it out when over revving?
DF150/175
Type Material Blades Diameter Pitch Part Number DF150/175
150-175 Stainless Steel 3 15-1/2 17 990C0-00830-17P n
150-175 Stainless Steel 3 15-1/4 19 990C0-00830-19P n
150-175 Stainless Steel 3 15 21 990C0-00830-21P n
150-175 Stainless Steel 3 14-3/4 23 990C0-00830-23P n
150-175 Stainless Steel 3 14-1/2 25 990C0-00830-25P n
150-175 Stainless Steel 3 14-1/2 27 990C0-00830-27P n
150-175 Stainless Steel 4 14-3/8 23 990C0-00834-23P n
150-175 Stainless Steel 4 14-3/8 25 990C0-00834-25P n
150-175 Stainless Steel 4 14-3/8 27 990C0-00834-27P n
150-175 Stainless Steel 4 14-3/8 28 990C0-00834-28P n
150-175 Stainless Steel 4 14-3/8 29 990C0-00834-29P n
The Merc REV 4 is a big prop and has a 14 5/8" diameter by comparison. | |
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