See full version: What prop for mercruiser 120 hp
Selecting a performance goal is crucial to finding the right prop. The Prop Selector will recommend a propeller based on the Performance Goal you select. For example, one propeller may be better suited for "Acceleration" while another propeller will be best for "Mid Range Cruise / Fuel Economy." more
The basics, they’re as integral to propeller selection as are performance goals and boat type. Your specifications will help narrow the field. [links]
By completing Steps 1-3, you’ve narrowed the field to recommended propeller families (listed below). [links]
Boat performance is equal parts power and propeller. With our propeller finder, you’ll be able to narrow your search for the most ideal prop considerably in just four simple steps. Get started now, and once you’ve entered your specifications, we’ll provide results based upon our extensive test data.
(Note: Results will often yield multiple propellers. Please contact a dealer once you've completed this process.) more
Select from these Mercruiser Stern Drive models to open detailed Solas propeller charts. All blade types, all possibilities, traditional pressed or modular rubber hubs. Prop shaft spline counts shown to help you find the right props. more
Solas offers aftermarket blade style options and mounting hardware for MerCruiser I/O stern drives, including Alpha One, Bravo One and Bravo II models (all under 400HP). For Bravo III, choose from the Solas B3 line of front and rear stainless steel Dual Props and special mounting hardware. [links]
* Trademarks
Mercruiser is a registered trademark of the Brunswick Corporation
Alpha One is a registered trademark of the Brunswick Corporation
Bravo One is a registered trademark of the Brunswick Corporation
Bravo I is a registered trademark of the Brunswick Corporation
Bravo II is a registered trademark of the Brunswick Corporation
Bravo III is a registered trademark of the Brunswick Corporation
All trademarks remain the property of their respective owners. [links]
Prop pitch is measured in inches and is the distance the prop moves forward in one revolution.
Selecting a prop is like selecting a single gear in your car to do everything.
Putting it very basically to increase power you would reduce pitch.Its easier for the motor to turn
but moves forward less per revolution "Usually" reduces speed but increases rpm and power.
Increasing pitch lowers power and rpm(harder to turn)but can increase speed if the motor can turn it fast enough.
Motors are designed to operate within an RPM range your 4.3 is probably about 4400-4800.
The idea is to prop for the best performance for your typical load and activities within that rpm range.
Some times its necessary to have 2 props one for speed and one for power.
We'll be glad to help you through this confusing morass.
If you read the stickys at the top of the prop forum it may help.
Remember there are no stupid questions everyone has to start somewhere.
1.) By maximize the power, what do you mean ? Top Speed? Holeshot ?
2.) What boat do you have ?
3.) What are your RPM and speed currently at WOT ?
Thanks for all of that info. It helps. Still confused though :lol: I guess I was looking for the best all around prop but I suppose I need to decide whether I want more speed or more power. I do a bit of everything. I do pull tubes from time to time but I probably do more cruising than anything. So should I get back to you with my WOT RPM's or can you help me with the info I have given. I know its not very helpful info but maybe you can understand what im shooting for? Thanks again for the help!
Re: Best Prop For Mercruiser 4.3? here
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