Your Ultimate Boating Resource

How To Increase Horsepower On An Outboard Motor?

Increasing the horsepower of an outboard motor can be a great way to improve the performance of your boat. Whether you’re looking to increase speed, torque, or just overall power, there are a few steps you can take to get the most out of your motor. Here’s how to increase horsepower on an outboard motor.

Upgrade Your Propeller

One of the easiest and most cost-effective ways to increase horsepower is by upgrading your propeller. A larger diameter propeller will allow more water to be pushed through the engine, resulting in increased power and speed. Be sure to consult with a professional before making any changes as improper sizing can cause damage to your motor.

Install a High-Performance Exhaust System

Installing a high-performance exhaust system can help reduce back pressure and improve airflow, resulting in increased horsepower and torque. This is especially beneficial for larger motors that are designed for higher speeds and heavier loads.

Tune Up Your Motor

Regularly tuning up your motor is essential for keeping it running at peak performance levels. This includes changing spark plugs, checking fuel filters, and replacing worn parts such as belts or hoses. A well-maintained engine will run more efficiently and produce more power than one that has been neglected over time.

Add Performance Parts

Adding performance parts such as air intakes or high-flow fuel injectors can help increase horsepower by allowing more air into the engine and improving fuel delivery efficiency respectively. These modifications should only be done by experienced professionals as improper installation can cause serious damage to your motor.

Increase Compression Ratio

Increasing the compression ratio of your engine is another way to boost horsepower output without sacrificing reliability or longevity of the motor itself. This involves changing out pistons or cylinder heads with higher compression versions which will allow more air into the combustion chamber resulting in increased power output when combined with other modifications such as those mentioned above.

Increasing horsepower on an outboard motor is not something that should be taken lightly as it requires knowledge and experience in order to do it safely and effectively without damaging your engine in the process. If you’re looking for a quick fix then simply upgrading your propeller may be enough but if you want maximum performance then consider investing in some high-performance parts or increasing compression ratio for even greater gains in power output from your outboard motor!

Have something to add or correct? Please let us know by clicking here.
* See disclaimer in the footer of the site for use of this content.

Related Questions


Latest Posts

Don't Miss

Our Newsletter

Get the latest boating tips, fishing resources and featured products in your email from!