Mercury Jet Outboard Vs Prop

Mercury Verado and FourStroke ranges of the V8 46L outboards are fast smooth and powerful with horsepower ranging from 250 HP to 300 HP. Messages 6 Reaction score 1 Points 20 Boat Make Other Year 2019 Boat Model Other Boat Length 17 Apr 15 2019 1 The sticker on my motor says use NLGI No.

Merc Drag 2 5 315hp Prop 9500rpm Svs Guillotine Throttle Body This Mill Rocks Fast Boats Boat Wraps Bass Boat

Me Im saving for a jet myself and when I buy one it will be a Mercury Sportjet- probably in an Alumaweld Stryker.

Mercury jet outboard vs prop. Most any outboard from 25 horsepower and larger can be converted to a jet drive. Jets are notoriously inefficient. The Nitro is slightly heavier the Merc is spinning a higher pitch prop and has slightly lower 208 gears.

So they are pretty close being withing 1 MPH. While Yamaha relies on that well-proven no replacement for displacement recipe most Mercury outboards use superchargers. I can get a new2008 Mercury 6040hp EFI Fourstroke Jet for the same price as a new 2007 Yamaha 6040hp Fourstroke Jet.

Jet Rib - faster more stylish safer in some ways cos no prop RIB ob - lighter quieter more reliable cheaper easier to steer manual start back up if battery flat bigger capacity plenty fast enough for skiingringos etc dont dissapear in a cloud of your own smoke at low speed. Operating and performance characteristics are different with outboard jet units as compared to traditional propeller driven outboard. Better fuel efficiency less HP loss lighter wt.

Noisier as you have a powerhead inside the boat and most builders dont insulate enough more vibration as its mounted where it transmits more. Both are known to be pretty hot 150 HPs with the Mercury achieving 163 HP at the propshaft. In addition the careful when first operating your outboard jet.

Some of the factory jet outboards show the following weight differences. If you go with an outboard jet just make sure it has a stainless steel impeller. There is a power range between 25 and 40 horsepower in Mercury outboards.

We dont have a good explanation for this beyond the fact that the sterndrive boat weighs 600 pounds more than the outboard and the jet drive system is less efficient than the outboards propeller. Tagged users None P. The jets are clearly quicker and faster but you pay for that performance.

The outboard jet because of the inefficiencies of the design reduces your effective horsepower by about 25-30. Economy- Fuel economy is about half compared to props. However the Yamaha has a longer shaft and would require the instillation of a jack plate.

Submerged trees are a real problem in the area that I use for wakeboarding. Start date Apr 15 2019. Because theres no lower unit extending below the hull the jet drive permits passage over obstacles that would restrict access to a propeller-driven outboard boat.

The propeller can also be a hazard to swimmers behind the boat. Because theres no lower unit extending below the hull the jet drive permits passage over obstacles that would restrict access to. While forced induction ensures superb accelerations and improves fuel efficiency it also adds mechanical complexity and may affect reliability.

Mercury Jet Outboards are specifically designed to pilot boats in shallow waters where propeller-driven hulls are unable to operate. Because it extends below the keel of the boat the outdrive and its propeller are susceptible to damage if they impact the bottom or an obstruction in the water like a rock or tree stump lurking just below the surface. Optimum throttle setting is around 4000 rpm with the sea boiling around you and jetplane-like noise from the exhausts.

Jet prop grease question 65hp Merc jet outboard Thread starter Panfish. Mercury outboards are tested in an extremely corrosive tank to ensure protection against corrosion. Therefore for example if you replace the prop lower unit of a 100 hp engine with a jet unit it will be putting out at most 75 hp at.

The main difference between prop and jet rigging is jet outboards need to be mounted about six inches higher so owners who want to shift back and forth from prop to jet need a jackplate. You can still get 200 250 hp Merc Optimax sport jets. An outboard jet motor sits on the outside of a boat just as a propped outboard does and appears the same in many ways.

However the same company Outboard Jets in San Leandro. A sterndrive also requires more maintenance than a jet drive. You lose typically 25 of hp from a jet vs prop.

While a propped motor gets its force from prop propulsion a jet outboard relies on a water pump which sucks water in and pushes it back out to move. That means you get. Ie 100hp prop boat is 75hp jet.

Jet outboards and boats are used a lot in the upper west coast rivers and Canada. Tunnel prop will get you by on 85 of the water around here but that 15 may keep you from going places you want to go. Ranging from 25 to 400 HP Mercury outboard motors are categorized as Verado Pro XS FourStroke SeaPro and Jet.

Mercury jet outboards come with both a three-year limited warranty and a three-year corrosion warranty. Also while the jets appendage drag is less since no gear case is being dragged through the water this may result in increased wetted surface of the hull since it offers no ability to trim the boat. And weeds are the jet boat drive worst nightmare.

From what I understand the Yamaha is a more expensive motor. Placing heavy items such as fuel tanks and batteries toward the bow helps improve weight distribution. Mercury jet-drive outboards are specifically designed to pilot boats in shallow waters where propeller-driven hulls are unable to operate.

I decided on getting a jet drive for the low waters I fish in. Mph while the outboards reached just over 40 mph. Having jet drives saved me a bunch of money and aggravation this season as I would have ripped at least 3 props off this season had I been driving an IO or ob.

Mercury jet outboards are designed to function in shallow waters. Youll notice that when you back off on the throttle the boat will continue slide forward and not slow down as with the propeller driven. An outboard jet motor will rev higher and have a lower top end speed.

The jet boats are also faster both topping out at 51. Yamaha 40 prop 223 Yamaha 4030 jet 221 so the jet is a little bit lighter Mercury 25 prop 157 Mercury 2518 jet 186 so the jet is much heavier Mercury 40 prop 260 Mercury 4030 jet 267 so the jet is only a bit heavier. Compared to a real v hull the Yamaha really slaps the waves.

Where you can cruise doing 8 knots at 1500 rpm with props the jet-driven boat hardly moves at all. These jet units are specific to the engine size bolt pattern and driveshaft of each manufacturer. Theyre different in the way the motors get power direction and force.

Lots of fishing guides use them in shallow rocky rivers. 2 lubricant that is water resistant. An outboard jet is simply a standard outboard with an aftermarket jet pump bolted to where the prop unit sits.

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