what are the advantages of multi cylinder engines?
110531
More power obviously.\n\nYou also get less vibration with multiple cylinders, because they can be designed to balance each other (some going up while others going down, etc.).
136891
In a HEMI engine, the top of the combustion chamber is hemispherical. The combustion area in the head is shaped like half of a sphere. An engine like this is said to have "hemispherical heads." In a HEMI head, the spark plug is normally located at the top of the combustion chamber, and the valves open on opposite sides of the combustion chamber. \nHEMI engines have all these advantages, why aren't all engines using hemispherical heads? It's because there are even better configurations available today. One thing that a hemispherical head will never have is four valves per cylinder. The valve angles would be so crazy that the head would be nearly impossible to design. Having only two valves per cylinder is not an issue in drag racing or NASCAR
265329
Eliminating backpressure in an exhaust system always creates more horsepower and more torque. Headers are excellent. The more efficient the exhaust system, the greater the power gains. \n\nThere are lots and lots of good brands of mufflers, catalytic convertors, and headers out there. In terms of mufflers, some of the best ones are: Flowmaster, Borla, Corsa, Hooker, etc. \n\nThere are lots of ways to increase performance, mate. Use high quality spark plugs, and spark plug wires. MSD ignition creates a more powerful spark, as well. Synthetic oils for the engine can also add power. Get a nice tune up using high quality parts. \n\nGood luck.
220327
Two part Question, TWO part Answer:\n\n1. No - viable - technology is avaible to create such an engine, but as yet it is not cost effective to build for mass market production. Will it become viable, yes.\n\n2. Reduction of internal moving parts would result in less drag, but more importantly it would nearly eliminate valve floating (a condition where the valves springs do not keep valve in contact with the camshaft). Less internal wear on moving parts would also be a benifit.
406425
In the Chevy cars, they were rated at 245 HP with dual exhaust. Trucks may have varied a bit
167424
the rotary engine works way diffenrent than a standard piston engine. Most mechanics don't know rotary engines like they do piston engines. Mazda however really likes the rotary engines. The RX-7 and RX-8 use them.
681821
I used to be a big 2 stroke fan and didn't want to jump on the 4 stroke (thumper) wagon but now I wouldn't go back. The 2 strokes are just as fast as the thumpers but they have a different kind of power. With the thumper I find it easier to ride, especially through turns and through technical stuff. It's a good usable power curve. They are also less maintnance. No gas mixing. No constant clutching (125cc). Longer gears. Low end power.
27382
advantage:\n\nfriction, resistance offered to the movement of one body past another body with which it is in contact. In certain situations friction is desired. Without friction the wheels of a locomotive could not “grip” the rails nor could power be transmitted by belts. \n\ndisadvantage:\n\nOn the other hand, in the moving parts of machines a minimum of friction is desired; an excess of friction produces heat, which in turn causes expansion, the locking of the moving parts, and a consequent breakdown of the machinery. Lubrication is important in minimizing friction as are also such devices as ball and roller bearings.
314920
An H3 only has 220hp from it's Inline 5-cylinder giving it a power-to-weight ratio only slightly better than a 1.5L Toyota Yaris (ouch!). To get more power consider the following:\n\n* Get a more aggressive air intake system\n* Headers - you'll increase power and fuel efficiency\n* Get a high flow muffler\n* Look into a performance chip\n* Wait and buy an H3 when GM finally gets a V8 to market (likely the 5.3 or 4.8)
1065081
high torque compared to single phase. For the same power output the size of three phase motor will be smaller and also it will be less costly.
839893
"turbo" used in normal piston driven engines uses the exhaust gasses energy to drive a (typically) radial turbine that is connected to a compressor that compresses the intake air. \n\nThe increased amount of air (mainly the oxigen in interesting) allows to add more fule to the mix and create a larger explosion in the cilinder yielding more power.\n\nThe air can optionally be cooled using an "intercooler" (air-to-air heat exchanger)\n\nFor diesel powered engines the result is an increase in power of the engine and an improvement of the fuel economy. For gasoline powered engines the results are an increased power, but the fuel economy might go either way.
764609
MA = (the distance over which force is applied) ÷ (the distance over which the load is moved).\n\nThe mechanical advantage is simply the ratio of the distances -- in this case 4.8 meters pulled divided by 1.2 meters over which the engine block is moved, which gives us a mechanical advantage of 4 (or 4 to 1).\n\nBy the way it is not always obvious in such cases but the total work performed at the input and the output is the same, since work = force times distance.  The rope is pulled 4 times as far as the engine block moves, but the force required is 1/4 of that produced to lift the engine block.
81119
Go tall it not only gives you more low end torque but adds horses in the entire power band. Not to mention if you get one thats ported it helps atomize the air/fuel mixture giving you better efficiency and power.
851924
A 2-stroke is a simplier engine with fewer moving parts.  A two stroke is a higher revving engine, which also means engine parts need to be replaced more often, like pistions and rings.  A four stroke creates more usable power and you're able to lug and engine down more.  I've have two 2-stroke motocross motorcycles then switched to a 4-stroke.  I've never go back to a 2-stroke.  A four stroke is easier to ride and has a better power band.  Also my tires, chain, sprockets last longer.  Along with not having to replace the piston and rings all the time.  It's cheaper in the long run.  4-strokes are also more fuel efficient and don't produce as much smog.  Another post stated a lawn mower is a 2-stroke, that is wrong.  Lawnmowers are 4 strokes.  Leaf blowers and  weed eaters are usually 2-stroke since 2-stroke engines are lighter and you have to carry those items around to use them.
720360
4 stroke would be better because you'd get higher revs, which would make the bike go faster.
1169952
Displacement, measured in cubic centimeters (cc) is the difference between the capacity of all an engine's combustion chambers at the beginning and end of the combustion process. The cylinder head moves to compress fuel and air in the chamber by reducing its volume. So, if an engine had four cylinders and each cylinder changed the capacity by 325 cubic centimeters as it moved, then the total displacement of the engine would be 1300cc. Engines with a larger displacement typically provide more power, since they compress more fuel and air during each explosion.\n\nAutomobiles with less than 1000cc (or one liter) of displacement are not going to be very powerful, but motorcycles, which have less weight to move, can be very fast with only a 700cc engine.
104294
Performance\nBase Number of Cylinders: 8 Base Engine Size: 7.5 liters\nBase Engine Type: V8 Horsepower: 245 hp\nMax Horsepower: 4000 rpm Torque: 395 ft-lbs.\nMax Torque: 2400 rpm Maximum Payload: 4655 lbs.\nMaximum Towing Capacity: 12500 lbs. Drive Type: RWD