The rule of thumb is based on weight alone, and says you should have between 40 and 25 pounds of weight for each horsepower. For example, a 5,000-pound boat could have an engine with between 125 and 200 horsepower.
How big of a motor can I put on my boat?
The rule of thumb guidelines based on weight alone would be between 40 and 25 pounds of weight per 1 hp. In other words a 5,000 lb boat fully loaded could have a 125 to 200 hp engine. The wide range, based on weight alone, is due to the variety in design and handling characteristics of a given boat.
Can you put any motor on a boat?
Any water cooled engine should be possible to modify for marine use. Chrysler V8 marine version. Just put it in. Any water cooled engine should be possible to modify for marine use.
What does a boat less than 20 feet must have?
Federal law mandates that boats of less than 20 feet in length must have a capacity plate in the steering or helm area. … It includes the total weight of persons, equipment, stores, fuel, engine assembly and steering controls.
What is the biggest motor you can put on a 12 foot boat?
For example, a twelve-foot boat with a four-foot transom width translates into a maximum engine size of fifteen horsepower.
What size motor do I need for a 20 foot boat?
Tips for selecting the right size hp for portable outboard motor for your boat.
|Motor HP||Boat length (feet)||Boat length (metres)|
|5hp – 15hp||8′ – 14′||up to 4.2m|
|9hp – 20hp||11′ – 16′||up to 4.5m|
|20hp – 40hp||13′ – 18′||up to 5.0m|
|40hp – 75hp||14′ – 20′||up to 5.5m|
Can I put a bigger engine on my boat?
Can I use a bigger motor on my boat than what it’s rated for? It is not a violation of Coast Guard regulations to install or use an engine larger than specified on the capacity label, but there may be state regulations prohibiting it, and restrictions from your own insurance company regarding this.
How many hours on a boat engine is a lot?
The average marine gasoline engine runs for 1,500 hours before needing a major overhaul. The average marine diesel engine will run for more than three times that long and log an average 5,000 hours under the same conditions.
Do marine engines run backwards?
Usually marine engines are only reverse rotation if it has a mate. 2/6/12 12:46 a.m. the reverse rotation engines can be made into standard rotation by putting in a regular timing set in place of the gear drive.
What is the problem with using your boat’s engine to drive it onto a trailer?
NOTE – While many people drive the boat onto the trailer, it isn’t advised. Using the engine to assist trailering erodes the ramp bed, can lead to debris being sucked into the engine, and can cause an accident! Make sure you drain all water from the boat – the bilge, the live well, the trailer lights, etc.
How heavy is a 16 foot aluminum boat?
How much does a 16 ft boat weigh? Depending on the boat type, between 1,332 lbs. and 1,884 lbs. without a trailer.
How fast can a 50 HP boat go?
It beats the heck out of rowing either way. I have a 16 foot boat with 50 hp 4 stroke Merc, and it tops out at about 30-35 mph depending on how much weight is in the boat.
How fast will a 90hp outboard go?
Before, you thought you needed as much speed as possible, but as you can see from this breakdown, the optimal speed for most watersports is only 22 mph (36 kilometers). Just about ANY pontoon boat with a 90hp motor can do that as long as it isn’t loaded down with people.