How fast will a 4.3 boat motor go?
Our test boat had the base level power of a MerCruiser 4.3lt V6, which is a carburetted engine rated at 142kW/190hp fitted to an Alpha drive unit. That gave plenty of get up and go, with a 75.7km/h top speed.
Why do boats run water through exhaust?
The wet exhaust systems found aboard recreational vessels use water to cool engine exhaust gases prior to discharging them overboard. The water also serves as a muffler of sorts to quiet engine noise.
What kind of motor is a 4.3 OMC Cobra?
This engine for sale is a Rebuilt OMC 4.3L/262ci complete engine. Fits OMC 1986 to present.
…
Specifications.
| Condition | Remanufactured |
|---|---|
| Cubic In. | 262ci |
| Horsepower | 190 |
| Engine Configuration | Complete |
| Fuel Type | Gas |
How does a marine wet exhaust work?
Water-cooled inboard engines inject cooling water into the exhaust pipe, which cools the exhaust and muffles engine noise. The exhaust then pushes the water out the exhaust pipe. This is known as a wet exhaust system.
How much gas does a 4.3 MerCruiser burn?
Registered. or ruffly a burn rate under 6 gallons per hour running 24 mph or 3200 rpms.
How many hours will a MerCruiser 4.3 last?
The average life for raw water cooled engines is 1,000-1,500 hours or less depending on how often they are used and how well they have been maintained. Sitting unused is hard on them, it’s better if they are run and flushed often.
Can you run dry exhaust on a boat?
Wet Exhaust vs Dry Exhaust – YouTube
How can I make my boat louder?
Subwoofers are made to reproduce bass, which immediately helps improve the overall sound. Not only do they play with more detail, but they also increase the volume. Adding a subwoofer will make your boat speakers louder and make your trip even more fun.
How do I know what OMC outdrive I have?
The model and serial numbers of the vertical drive should be located on the engine model and serial number plate. If the vertical drive model and serial numbers are not recorded with the engine model and serial number, they can be found on a plate located on the vertical drive.
How long do marine exhaust manifolds last?
Most experts suggest that a manifold will have a life expectancy of six to eight years. However, heavy use in saltwater can see this drop to as low as three years, while lightly used freshwater boats can get up to 20 years out of a manifold.
How much hp does a 4.3 MerCruiser have?
The MerCruiser 4.3L MPI engine is a multi-point, fuel injected engine. This V6, 262 cubic inch (4.3-liter) motor delivers 220 horsepower (HP) to the sterndrive at 4,400 to 4,800 RPM at WOT (wide open throttle). With a compression ratio of 9.4:1, it runs on 87 octane gasoline.
What kind of gas does a 4.3 MerCruiser take?
MerCruiser engines will operate satisfactorily when using a major brand of automotive unleaded fuel meeting the following specifications: Posted Pump Octane Rating of 91 RON minimum. Premium Unleaded Petrol (PULP 95 RON) is also acceptable.
How many horsepower is a 4.3 V6 MerCruiser?
The MerCruiser 4.3L MPI engine is a multi-point, fuel injected engine. This V6, 262 cubic inch (4.3-liter) motor delivers 220 horsepower (HP) to the sterndrive at 4,400 to 4,800 RPM at WOT (wide open throttle).
What RPM should a 4.3 MerCruiser run at?
4400-4800
Mercruiser WOT RPM Range Chart*
| Mercruiser Alpha One* WOT RPM Range Chart | ||
|---|---|---|
| HP/Model | Year | Wide Open Throttle RPM Range* |
| 4.3L 190 | All | 4400-4800 |
| 4.3L 205 | All | 4400-4800 |
| 4.3L EFI 210 | All | 4400-4800 |
Does boat exhaust pollute water?
Two stroke motors can emit 25-30% of their unburned gas and oil mixture into the water. In contrast, four-stroke motors emit 97% less air and water pollution than old two-stroke motors. This pollution can affect the pH and dissolved oxygen in the lake, which can influence the type and abundance of fish and wildlife.
What is a dry exhaust system?
The difference between a wet and dry exhaust explained! Compare a dry exhaust to the exhaust pipe of the car: a pipe with a flexible connecting piece on the exhaust manifold, discharging the exhaust gases directly to the outside air. A dry muffler is often required to muffle the noise.
What happened to OMC Marine?
Outboard Marine Corporation (OMC) was a maker of Evinrude, Johnson and Gale Outboard Motors, and many different brands of boats.
Outboard Marine Corporation.
| Industry | Marine Outboard Motors and Boats |
|---|---|
| Founded | 1907 in Milwaukee, Wisconsin, United States |
| Defunct | December 22, 2000 |
| Fate | Bankruptcy |
| Headquarters | Waukegan, Illinois , United States |
What OMC engine do I have?
When should I replace my boat exhaust manifold?
Will cracked exhaust manifold damage engine?
Besides leaks, cracks in the manifold can allow outside air in, which in turn can cause the engine to stall or die. If the crack isn’t fixed in a timely fashion, you can also cause major damage to the engine, such as blown head gaskets and overheated heads.
What RPM should I run my 4.3 MerCruiser?
How many hours is a 4.3 MerCruiser good for?
How much HP does a 4.3 MerCruiser have?
How much power can you get from a 4.3 MerCruiser?
The MerCruiser 4.3L has a maximum power capability of 220 HP. This engine is a V-6, and operates at between 4,400 and 4,800 revolutions per minute at wide-open throttle (WOT). The cylinder bore has a diameter of 4 inches and piston stroke length of 3.48 inches. This engine’s compression ratio is 9.4-to-1.
Is water supposed to come out of exhaust on outboard?
The Reason Outboards Squirt Water From the Exhaust! – YouTube