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Topic: Boxer engine

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	The History of the Flat or Boxer Engine (as illustrated by toy cars)
		That engine was later used on the Alfa Romeo Arna (a joint venture with Nissan), the Alfa Romeo 33, the Alfa Romeo Sprint and the Alfa Romeo 145/146.
		The Ferrari flat 12 boxer engine was first used on their Formula One cars of the late 1960's.
		Porsche used the VW engine in the early Porsche 356.
	www.breithaupts.com /totc615.htm (690 words)

	SUBARU ENGINES
		The modern SUBARU engines manufactured by Fuji Heavy Industries in Japan, a company involved in aerospace, is a very logical choice for an aircraft builder looking for a modern engine for his or her modern airplane.
		In an in-line engine the crankshaft is affixed to the crankcase by five main bearing caps bolted to the crankcase in a distance of only eleven inches (this puts a main bearing every two inches).
		The heads (there are two in a boxer engine) are made from lightweight cast-aluminum alloy for quick even warm-up with the crankcase and to aid in combustion-chamber cooling efficiency.
	www.jeffsrv-7a.com /ENGINES/subaru_engines.htm (1942 words)

	Flat engine - Wikipedia, the free encyclopedia
		A flat engine is an internal combustion engine with its pistons parallel to the ground.
		Boxer engines of up to eight cylinders have proved highly successful in both automobiles and motorcycles, and continue to be popular for light aircraft engines.
		These engines can run very smoothly and free of vibrations with a four-stroke cycle, regardless of number of cylinders, and do not require a balance shaft or counterweights on the crankshaft to balance the weight of the reciprocating parts which are required in other engine configurations.
	en.wikipedia.org /wiki/Flat_engine (935 words)

	Boxer (disambiguation) - Wikipedia, the free encyclopedia
		Boxer Rebellion, a Chinese uprising in the late 19th century
		Boxers, short for two styles of male undergarment based on shorts worn by pugilists: Boxer shorts and Boxer briefs
		A flat engine, informally known as a "boxer engine"
	en.wikipedia.org /wiki/Boxer (170 words)

	Total Motorcycle - Beginner's Guide to Motorcycling - Section 6
		Engine layout in which the cylinders are arranged in a row, and in-line with the wheels of the machine.
		V Twin engines are designed in different amounts of degrees (measured from the middle of each piston to piston), the further apart the angle is, the smoother than engine becomes without loosing and advantages over the narrower V Twin designs.
		While the Boxer twin engine was a good design in day (1960), BMW has taken the design a step further today and is now much improved in RPM range and can be found in their new sport bikes along with the In-line four.
	www.totalmotorcycle.com /school-SectionSix.htm (2447 words)

	BMW R1200C Phoenix
		Of all the motorcycle engines produced, one of the most efficient and successful is the BMW flat twin, or as it is better known, the Boxer engine.
		Because of it's opposed cylinder layout the "Boxer" as it was dubbed, turns the crankshaft in line with the motorcycle (or airplane!) This allows for a straight-through shaft connection from the engine, through the gearbox, and through a stainless steel driveshaft to a rear wheel final drive gear in the wheel hub.
		BMW’s engine specialists also realised, however, that while the Boxer in its conventional form is most certainly a very muscular, sporting machine, it is still several thousand revs away from the ideal cruiser engine in the true sense of the word.
	www.raditude.com /bmwboxer.htm (4643 words)

	The Subaru Boxer Engine: Piston and Crankshaft
		The lower engine height allows for improved vehicle aerodynamics and a low hood line for improved forward visibility, while a lower center of gravity benefits cornering, resulting in exceptional handling and outstanding stability.
		The crankshaft on a Subaru boxer engine is shorter and lighter, resulting in improved performance.
		The crankshaft in a Subaru engine is short because a 4- or 6-cylinder horizontally opposed engine has two banks of two or three cylinders rather than a long single row of four or six cylinders, as with in-line engines.
	www.drivesubaru.com /SubaruDrive-Sum02/Piston-Cranky.asp (914 words)

	Tim's Alfa Romeo Page - Alfasud: The Alfasud and its successors with Boxer-engine 33 and 145/146
		The smallest engine (not sold in all European countries) with 1186 cm³ and 68 bhp is followed by the 1351 cm³ version with 79 bhp (75 bhp in Germany).
		It is the 1.7 litre 16V engine with 137 bhp (respectively 132 bhp with three-way catalyst with lambda probe).
		It inherits the engines of the Alfa 33.
	alfasud.alfisti.net /ase13.html (3092 words)

	AutoZine Technical School - Engine
		As seen, no matter where the crankshaft rotates to, the boxer engine has the pair of pistons always in opposite positions, directions and speeds, thus all the forces can be balanced.
		Since the 80s, car engineers regard 4-pot engines larger than 2 litres in capacity had better to be equipped with twin-balancer shafts to dampen the vibration.
		Obviously, the solution is the same as 3-pot engines, that is, employ a balancer shaft on which there are counter weights moving in the opposite direction to the pistons.
	www.autozine.org /technical_school/engine/smooth2.htm (1124 words)

	Engine - F1Technical.net
		This means limiting internal engine friction can generate a large surplus in horsepower, and where in F1 the stress is on power, on the road it is also on fuel consumption.
		Boxer engines are actually one of the best ways to build an engine, if all external factors allow it.
		These engines became popular in F1 because of the low point of gravity, and the average production costs, but later on disappeared out of the picture as this type of engine is not sufficiently stiff enough to whitstand the car's G-forces in cornering conditions.
	www.f1technical.net /articles/4 (2054 words)

	: : skookumQuest.com : :
		Air is sent to the engine by spinning the compressor that is connected to the turbine on the same shaft.
		Therefore, oil and water from the engine are used to lubricate and cool the turbine shaft bearing.
		In a Horizontally-Opposed Engine we have a high degree of freedom with respect to the layout of the turbocharger and therefore can make the air intake port straight allowing for the volume of the air-pipes between the turbocharger and the engine to be small.
	www.skookumquest.com /subaru/subaru_boxer.htm (1817 words)

	www.e31.net
		A two-cylinder engine has a working cycle every 360°, which means that both pistons have to be in the same position and move in same direction all the time.
		An inline four engine fires every 180° which means that always two pistons are in the same position and move in the same direction.
		In boxer engines the pistons are not aligned upright or in V-shape, but lie horizontally opposed.
	www.e31.net /engines_e.html (1294 words)

	Boxer engine out... - FerrariChat.com
		I've never removed one myself, but Ted Rutland has and he told me that the Boxer engine is the easiest of all Ferrari engines to remove...he said it's like removing a small block Chevy from a Camaro.
		Pete, I had to laugh when you said it took three people to replace the engine hood, I had the same situation, me, the owner and a neighbor girl, she was the other person I could round up at the time.
		Boxers seem to eat the inside boots, the exhaust heat I think is the problem.
	www.ferrarichat.com /forum/showthread.php?t=89414 (1621 words)

	Why the engine so far forward? \| Ask MetaFilter (Site not responding. Last check: 2007-11-01)
		The engine is placed slightly in front of the axles because the transmission sits transversely between the engine and the driver so the axles aren't at an excessive angle.
		Subaru's design emphasizes the low placement of their boxer engine to promote a low center of gravity (better handling) as well as a certain amount of passenger safety (the engine will drop beneath the cabin in the event of a serious collision).
		I guess the unique engine design, as well as the packaging of their transmission and all-wheel drive components (transfer case, etc) sets the engine a little ahead of the wheels.
	ask.metafilter.com /50395/Why-the-engine-so-far-forward (1031 words)

	The Subaru Boxer Engine: Piston and Crankshaft
		At the center of any internal combustion engine is the crankshaft, which converts the motion of the piston into rotational motion through a connecting rod.
		This crankshaft design is an integral part of the boxer engine and contributes to the outstanding driving performance you have come to expect from your Subaru All-Wheel Drive vehicle.
		The crankshaft in a Subaru engine is short because a 4- or 6-cylinder horizontally opposed engine has two banks of two or three cylinders rather than a long single row of four or six cylinders, as with in-line engines.
	www.irvinesubaru.com /enthu/theboxerengine.html (924 words)

	2007 BMW R1200R - First Look - MotorcycleUSA.com
		BMW gave its "R" series of Boxers a thorough reworking in 2005 by upgrading many of the series with the latest-generation Flat-Twin powerplant that boasts a healthy increase in power that came along with 50cc extra and other engine-tune mods.
		The manufacturer is careful to note that peak numbers were measured while the engine was running on premium fuel, but BMW is also quick to assure that due to the CAN-bus engine management in conjunction with automatic choke, idle speed and anti-knock controls, the new engine will run just fine with lower-grade gas.
		The importance of the new Boxer engine extends into the suspension, where the Flat-Twin is utilized as a load-bearing unit in the two-piece frame.
	www.motorcycle-usa.com /Article_Page.aspx?ArticleID=3498&Page=1 (1402 words)

	Boxer engine feature - NASIOC (Site not responding. Last check: 2007-11-01)
		The opposing cyclinder "boxer" design allows the engine to sit lower in the car to lower the center of gravity and it vibrate less at WOT because the pistons motions are cancelling each other out.
		If you are hearing ticking noises coming from either side of the engine compartment (where the cylinder heads are located), I'd guess you are hearing either the valves/lifters or the normal sound of the fuel injectors.
		I noticed how the boxer engine feels "rough" but it doesn't bother me. I hear the lifter tick or the FI tick, whichever it is, and it doesn't bother me because my 3000GT done the same thing and it was the lash adjusters.
	forums.nasioc.com /forums/showthread.php?t=98223 (1319 words)

	The Rotary Engine
		Subaru and Porsche, however, produce boxer engines, and what they are is that the cylinders are all inline, but half of the cylinders move in the opposite direction of the other half of the cylinders.
		For example, Subaru produces a boxer-four engine which has two cylinders on one side of the engine and the other two cylinders on the other side of engine, and in the middle is the crankshaft.
		Other engines, such as lawnmowers and boat engines, are two-stroke, and they basically have the intake and combustion in the first stroke, and exhaust in the second stroke.
	www.allenhah.com /engine.htm (683 words)

	What is a boxer engine? - Answerbag.com (Site not responding. Last check: 2007-11-01)
		A flat engine or boxer engine or horizontally opposed engine is a type of engine where the pistons lie horizontally opposed, with pairs of cylinders on the left and the right, as opposed to most modern engines where the alternating pistons are positioned in a "V"-angle.
		The benefit of using a boxer engine versus a V engine is that it provides perfect balance because each piston's movement is exactly counterbalanced by the corresponding piston movement of the opposite side.
		However, boxer engines are also wider than normal engines and are more expensive to build than traditional engines and, thus, are not widely used by automobile manufacturers.
	www.answerbag.com /q_view.php/6943 (488 words)

	Dr. Ing. h.c. F. Porsche AG -
		boxer engine 180 kW (245 bhp) at 6,400 rpm
		boxer engine 239 kW (325 bhp) at 6.800 rpm
		boxer engine 261 kW (355 bhp) at 6.600 rpm
	www.porsche.com.cy (421 words)

	Alfa Romeo Boxer engine capacity data (Site not responding. Last check: 2007-11-01)
		One of these was the 1596cc engine used in some versions of the Alfa 146, while a 1598cc engine can be created by fitting 1.7 pistons to the 1.5 engine.
		The 1.5 boxer with 1.7 pistons creates a very oversquare engine which is often used in racing, particularly where a 1600cc class limit applies.
		The smaller capacity engines are not covered here, as it is less common for these to be rebuilt with oversize pistons or to be used in racing.
	homepages.ihug.co.nz /~alexj/motor/alfa-boxer-data.html (395 words)

	Preview: 2005 Subarus - MSN Autos
		The new 3.0-liter engine is quieter, smoother and lighter than the previous engine and the increased performance comes from an Active Valve Control and Active Valve Lift System.
		The fact that both these new power plants are horizontally opposed or "boxer" engines—the same engine configuration used in the Porsche 911 or the original Volkswagen Beetle—affirms that Subaru has not abandoned its boxer past but embraces it.
		The engine is mounted lower in the chassis for improved handling.
	autos.msn.com /advice/article.aspx?contentid=4022499 (1775 words)

	Alfisti Technical- Boxer History
		A 'boxer' engine is a 'flat' one where the cylinders are horizontaly opposed, as on the VW Beetle, Porsche 911 and Ferrari 512 Boxer and Testarossa!
		The Alfa boxer engine was used in the Alfasud, the Sprint, the Arna (and Nissan Cherry Europe), the 33 and the early 145 models.
		This engine was used in the final Alfasud Ti model (the Green Cloverleaf), the Sprint and the 33.
	www.alfisti.co.uk /boxerpage.htm (508 words)

	BMW Airhead Boxer Page from Motorcycle Co UK
		These bikes are known as the BMW 'Boxer' from the engine configuration of the two pistons moving out and in as a boxer punches.
		The engine is still laid 'flat', in that the pistons run left and right, with the head on the left and the crank inline, but these are a completely different style of bike to the twins.
		A big text page with all the 1970-85 engine 'engineering' specs you could want, from compression ratios and power outputs to valve spring free length and gudgeon pin diameter and torque wrench settings and......
	www.motorcycle.co.uk /BMW/R_Series_Airhead_Boxer (5232 words)

	» 40th anniversary of the Subaru’s “Boxer” Engine (aka horizontally opposed engine) \| Subaru ... (Site not responding. Last check: 2007-11-01)
		Subaru is celebrating the 40th anniversary of the introduction of the “boxer” or horizontally opposed engine to its passenger car line-up this year.
		By 1979 Subaru had a 1.8 litre boxer motor powering the top models of the Leone range and was beginning to gain class victories on some of the world’s toughest rallies, notably the Kenyan Safari.
		Subaru is planning to stick with its boxer engines as the basis of its future models and is currently in the final stages of developing a diesel boxer motor to meet market demand in Europe where over 50 percent of all new cars are now diesel powered.
	www.scoobyblog.com /2006-08-17/40th-anniversary-of-the-subarus-boxer-engine-aka-horizontally-opposed-engine (1171 words)

	Ertle Cars -- Subaru Main Page
		In a boxer engine, the cylinders are horizontally opposed.
		The all-new six-cylinder engine that powers the Outback H6-3.0 models is only slightly longer than the 2.5-liter four-cylinder engine that powers other Outback models.
		Mounting the boxer engine longitudinally (front to back) allows the transmission to be mounted directly behind it.
	www.ertlecars.com /subaru/boxerengine.php (231 words)

	Brough Superior
		The boxer layout, with the crankshaft longitudinal and opposed cylinders, was developed by BMW Engineer Max Friz, and resulted in the 1923 BMW R32 — the first BMW motorcycle (yes, Virginia, BMW made motorcycles five years before it produced cars).
		Much development work was done on this engine and as might be expected many modifications resulted, culminating in the second design...
		This is specially designed to accommodate this type of engine, being welded together instead of the usual practice of brazing lugs.
	jeffdean2.home.att.net /brough.htm (901 words)

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