Answer: In principle, a diesel engine is a diesel engine, so an automotive diesel will work fine in a boat. And, in fact, many marine diesel engines are nothing more than “marinized” car or truck engines. … The engine will want a water-cooled exhaust manifold and a wet exhaust (a dry exhaust is too noisy).
What is the difference between a truck engine and a marine engine?
An automotive engine kicks down to a lower rpm at top speeds. In contrast, a marine engine’s sustained speed only increases with sustained rpm. Basically, a truck motor has four to six gears, and a marine motor has one. It only makes matters worse when a boat engine isn’t properly broken in.
How big of an engine 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.
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?
Using a boat’s engine to drive it onto a trailer to fully load it is not an acceptable practice. Using the boat’s engine to load onto the trailer is dangerous to your equipment and the people around the loading area. It also erodes the material at the end of the ramp which leads to its deterioration.
Can you run a twin engine boat on one engine?
One strategy that offers interesting possibilities is to run just one engine, but allow the second propeller to freewheel as the boat moves through the water. … Some Twin Disc and Caterpillar transmissions are built to freewheel, but you need to check your transmission to see if this is possible with your equipment.
What is the difference between a Marine 454 and a regular 454?
generally speaking the only difference between marine and auto engines is the marine engines usually use different head gaskets(stainless fire ring) sometimes the paper is different,brass freeze plugs, and a cam with lots of low and midrange power, but the bearings are all automotive, the rpm limit is not really the …
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|
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.