Carbed outboards

[BJ Laster]

I am doing a project at school on the Mercury 150 XR6. primarily because that is what I run and it is a carbed motor. I cannot find a whole lot of info on it. What do you all know about it? My manual is at home and I have till next week to get it done.



thanks



BJ

 

[Marke Cicero]

BJ,



I suggest visting your local dealer and interviewing a certified technition. There are several tech's on this board who can help but nothing would educate you better than a face to face meeting and possible hands on experience.



It would also help us here if you had some specific questions.



Good luck,



Marke

 

[BJ Laster]

Thanks



how do they work? just any interesting info.

 

[Mark Hofman]

Well, there are six little gnomes inside the cowling, each turning a hand crank, being bullwhipped by a gargoyle. The harder you push on the throttle, the more those six little gnomes get whipped.

 

[Mark Hofman]

Specifications

HP @ Prop: 150

kW @ Prop: 111.9

Max RPM (WOT): 5000-5600

Cylinder/Configuration: V-6 (60 degree vee)

Displacement (CID/cc): 153/2507

Bore & Stroke (in): 3.50 x 2.65

Bore & Stroke (mm): 89 x 67

Cooling System: Water cooled with thermostat and pressure controlled

Ignition System: Modular CDI

Starting: Electric

Gear Ratio: 1.87:1

Gear Shift: F-N-R

Steering: Remote

Alternator Amp: 40

Alternator Watt: 504

Trim System: Power trim standard

Exhaust System: Through prop

Lubrication System: Single point variable ratio

Fuel Induction System: Loop-charged

Shaft Length (inches): 20

Shaft Length (mm): 508

Dry Weight (lbs.) (Lightest Version model, excludes engine oil, rigging, hardware and propeller): 406

Dry Weight (kg.) (Lightest Version model, excludes engine oil, rigging, hardware and propeller): 184

Operator Warning System: Overheat, low oil level

Available Propellers: Consult Current Dealer Propeller Guide

Warranty: 2 years

Recommended Oil: Mercury Premium Plus 2-Cycle Outboard Oil









Features & Benefits



These powerful 2.5L V6 engines provide outstanding performance and incredible value.



Easy to start and reliable, these engines feature a simple, powerful design.



Both models feature Mercury's exclusive 40-amp/504 watt alternator system with twin 20amp/ 252 watt capability to keep batteries charged even at low RPM for added convenience.



Single point, variable ratio oil injection reduces oil consumption for added convenience.



Each model features 2-years of factory backed warranty and three years of limited corrosion warranty.

 

[Brian Feist]

MO,



I'm just impressed that you can quote that from memory...

 

[Steve Rizza]

Quote what? The true part about the gnomes,or all the make believe stuff.LOL

 

[Bob G.]

The six gnomes are pretty kick a$$, but the gargoyle thinks that he is in charge of the boat too, so I have to kick his a$$ every now and then!!



Bob G.

 

[Richard Whittemore]

Mofish,

I liked the post about the gnomes and gargoyle.

Well written, correct grammar and punctuation. Easily understood for the layman. A+

Your next post even though it had visual aids the grammar was in pieces and not easy to follow. Very befuddling. C-



:>)

 

[David Hunt]

MOFISH - The walking, talking, reference text. Do you keep the brocures at home?



So the 150 hp motor ranges in weight from 184 pounds to 406 pounds????? Say what? How does that work?!



david.....

 

[Mark Hofman]

No, just a fast internet connection and a blindingly quick middle finger on the CUT and PASTE mouse button!
http://www.mercurymarine.com/mercury_150_xr6_classic

 

[Marke Cicero]

David,



The gnomes get fat and lazy over the winter so the motor can weigh up to 406lbs. After a hard season they get down to a lean mean 184 lbs.

 

[Mark Hofman]

Dave, One is kilograms, the other is pounds.

 

[David Hunt]

Mark,

I like Marke's version more. Cabin fever come on down!

 

[Mark Hofman]

No, you misunderstood me. The gargoyle is weighed by the pound, the six little gnomes by the kilogram (because their European)! Together, here in the U.S., however, we have to calculate the total weight of the seven together in pounds.

 

[Mark Hofman]

Poor BJ. He's never going to get a straight answer to an honest question, is he?



BJ, the XR6 works by converting air, fuel and spark into kinetic energy.



The fuel and air are combined via the carbeurator (which has something to do with the Bernoulli Principle, the same principle that makes airplanes fly) and injected via valves in sequence into the combustion chambers of the six cylinders. At the appropriate time, spark is applied by the spark plugs and the fuel/air mixture ignites at an explosive rate. The gasses expand and push down on the top of the pistons in a carefully timed sequence. Waste gasses and unused fuel are then vented out another valve and ejected from the motor through the propeller hub (underwater because the water acts as a natural muffler).



<img src="http://static.howstuffworks.com/gif/engine-v-6.gif">



The pistons are connected to a crankshaft. As each piston moves up or down, it turns that crankshaft. In the XR6, the entire configuration of the powerhead is mounted vertically, rather than horizontally as in a car motor. The crankshaft is positioned in such a way that the shaft extends from the powerhead down toward the lower unit, just as a driveshaft in an pickup extends from the transmission back to the rear axle.



In the lower unit, the turns of the vertically-oriented crankshaft are transferred to the horizontally-oriented propeller shaft via a set of gears contained in the bullet of the lower unit. The propeller is mounted to and turned by the propeller shaft and, when it's turning, pushes against a thrust washer.



Other parts of the motor include an alternator, electrical harness, starter motor, fuel lines and filter, "rectifier", fuses, springs, gaskets, bolts, screws,....yadda yadda yadda. But all of them function together to take items that hold potential energy (gasoline and air) and combine them with electricty to produce power and motion (kinetic energy).
http://www.howstuffworks.com/engine.htm

 

[Mark Hofman]

There's lots of good stuff on that "How Stuff Works" site, like this illustration about how a 2-cycle engine works:
http://science.howstuffworks.com/two-stroke2.htm