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Topic: Camshaft

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Poppet valve

Timing belt

Single overhead camshaft

Cylinder head

Variable Cam Timing

Double overhead cam

Four stroke cycle

MIVEC

Sleeve valve

Variable valve timing

Desmodromic valve

Valve

Crankshaft

Pushrod

Reciprocating engine

	RPM-camshaft
		Cams range in lift and duration (the amount of time the valve is open) to degrees of overlap, and centerline.
		Lift is the amount of rise on the camshaft lobe, and must be taken into consideration if a higher lift than stock is going to be your choice.
		But the easiest way to degree in a camshaft, is by the centerline process off of the intake valve centerline.
	www.rpmrons.com /degreecam.html (483 words)

	Camshaft Variables Basics - Tech Article - Chevy High Performance Magazine
		The camshaft's function is to time each valve opening and closing point in relation to the piston and the combustion process to every degree of the engine's 360-degree rotation.
		During the camshaft's installation, it is extremely important to make sure the crankshaft and camshaft's timing gears are properly aligned by placing the dimple on the crankshaft timing gear in the 12 o'clock position while the dimple on the camshaft timing gear is positioned at 6 o'clock.
		Camshafts that typically measure less than 0.550-inch lift and 220 degrees of duration (at 0.050-inch lift) are usually safe with flat-top pistons, but even then they should be checked for acceptable clearance.
	www.chevyhiperformance.com /techarticles/148_0405_camshaft_variables_basics (1884 words)

	Nathan Plemons' Web Page - The Camshaft
		A camshaft can be so mild that the engine runs as smooth as silk at a very low RPM, or it can be so radical that the engine will barely even run at idle, and there is any range of choices in between.
		This single camshaft design means that valve timing is completely fixed, once a camshaft is installed the valve timing is set and cannot be changed without swapping the cam out for a different one.
		Camshaft specifications are typically given in terms of duration, lift, and lobe separation angle, in that order.
	www.wku.edu /~nathan.plemons/htmls/camshaft.html (1939 words)

	Camshaft arrangement for multi valve engine - Patent 4979474
		The camshaft 55 is journaled, in a manner to be described, for rotation about a camshaft axis that extends parallel to the aforenoted plane and which may be offset slightly from one side thereof toward the intake valves 38 and 39.
		The camshaft 55 is also provided with a pair of exhaust lobes 69 which lobes are each disposed between a respective one of the bearing surfaces on the camshaft that cooperate with the cylinder head bearing surfaces 57 and 58 and the portions of the camshaft which cooperate with the cylinder head bearing surfaces 56.
		In addition, the camshaft 101 is provided with a first intake lobe 102 that is disposed between the camshaft bearing areas 57 and 58 and a second intake lobe 103 that is disposed between the bearing area 58 and the exhaust cam lobe 69 adjacent the cylinder head bearing area 55.
	www.freepatentsonline.com /4979474.html (3126 words)

	Pelican Technical Article: BMW 3-Series E36 Camshaft Removal and Installation
		The key to safely removing the camshaft is to reduce the uneven forces that are placed on it during the removal process.
		Set the camshaft on the head so that the lobes for cylinders 2-6 are as far away from the lifters as possible.
		Camshaft bearing caps should be tightened to 11 ft-lb (15 Nm), as shown in Figure 15.
	www.pelicanparts.com /bmw/techarticles/E36-Camshaft-Removal/E36-camshaft-removal.htm (3108 words)

	Camshaft
		Several camshaft grinds were delivered stock on the 2.3 turbos.
		Camshaft Pulleys:Cams can be retarded for more power with an adjustable cam pulley.
		The nicest adjustable camshaft pulley is available from:Race Engineering Inc.2602 Park Street,Lake Worth, FL 33460.
	www.merkurencyclopedia.com /Motor/camshaft.html (1119 words)

	Camshaft manufacture - Patent 4809562
		More particularly, the invention relates to camshafts and a method of making a camshaft in which individually produced cams and journal elements are fastened to a hollow tube by outwardly deforming the tube with a lost mandrel which is left securely in position to form a seal in the tube.
		Camshaft 10 includes a hollow supporting tube or shaft 12, preferably formed of ordinary low carbon steel which has been locally expanded in a manner to be subsequently described.
		The camshaft elements that are desired to have a high wear resistance such as the cams and journal elements are formed to relatively close final tolerances by individual processes.
	www.freepatentsonline.com /4809562.html (1606 words)

	Camshaft - WOI Encyclopedia Italia (Site not responding. Last check: )
		The relationship between the rotation of the camshaft and the rotation of the crankshaft is of critical importance.
		In a two-stroke engine that uses a camshaft, each valve is opened once for each rotation of the crankshaft; in these engines, the camshaft rotates at the same rate as the crankshaft.
		Some engines use one camshaft each for the intake and exhaust valves; such an arrangement is known as a double or dual overhead cam (DOHC), thus, a V engine may have 4 camshafts.
	www.wheelsofitaly.com /wiki/index.php/Camshaft (633 words)

	Camshafts- DragTimes.com
		The relationship between the rotation of the camshaft and the rotation of the crankshaft is of critical importance.
		For this reason, the camshaft is connected to the crankshaft either directly, via a gear mechanism, or indirectly via a belt or chain called a timing belt or timing chain.
		The lobes of the camshaft are usually slightly tapered, causing the cam followers or valve lifters to rotate slightly with each depression, and helping to distribute wear on the parts.
	www.dragtimes.com /camshafts.php (477 words)

	Camshaft oil seals.
		Loosen the camshaft journal a little at a time, until all are loose, place the bolts and journals on a rug or paper in such a way that there is easy to get them back on in the same position and rotation as they were before.
		Remove one camshaft at a time, remove the bolt that holds the pulley to the camshaft, and the pulley from the camshaft, using a puller if necesary.
		Align the camshaft pulleys so that the timing marks face each other, remove the distributor cap and check that the distributor arm is still at the TDC mark, check under the car that the crankshaft pulley TDC mark (an inward notch in the pulley) is also aligned with the mark on the cylinder block.
	www.wrc-cosworth.org /howto/camoilseal.html (597 words)

	Camshafts & Camshaft Kits
		All camshaft kits are a new generation designed and manufactured by Crane Cam Co.® All kits contain one camshaft and 16 tappets.
		This camshaft is emission legal in all 50 states.
		This off-highway camshaft kit has the major valve train component to convert production LT1 engine for showroom stock racing, or hop up your small block Chevrolet V8 that was originally equipped with a roller tappet camshaft.
	www.gmpartsdirect.com /performance_parts/store/catalog/Category.jhtmlCATID=826.html (1926 words)

	Camshaft
		Camshaft is one of the three Transformers’ Generation One Omnibots from the 1985 that could only ordered from Hasbro through a catalogue.
		Camshaft’s traditional transformation theme was to have the front hood has his legs, the cabin as his torso.
		Camshaft obviously has the front hood pointing down, which gives him a less sexy silhouette and reveals the interior construction of the hood, just before we reach the neck area.
	comicbookbin.com /camshaft001.html (1456 words)

	Camshaft
		The camshaft uses lobes, called cams, that push against the valves to open them as the camshaft rotates; springs on the valves return them to their closed position.
		As the camshaft spins, the lobes open and close the intake and exhaust valves in time with the motion of the piston.
		The camshaft in a pushrod engine is often driven by gears or a short chain.
	home.wanadoo.nl /xavira/camshaft/cam.htm (1534 words)

	Camshaft & Valvetrain Upgrade - 5.0 Mustang & Super Fords Magazine
		Selecting and purchasing a performance camshaft are among the first internal-engine upgrades a 5.0 enthusiast makes when he embarks on the road to improving his Pony's performance.
		The camshaft's role is to actuate all the components of the valvetrain (lifters, pushrods, and rocker arms) that control the operation of the intake and exhaust valves.
		Once the camshaft was in, Crane's double-roller timing chain and billet gears were installed and the cam thrust-plate bolt was tightened to 9-12 lb-ft of torque.
	www.mustang50magazine.com /techarticles/m5lp_0603_camshaft_valvetrain_upgrade (1274 words)

	Camshafts, Camshaft Kits and Bearings
		This camshaft kit is designed and manufactured by Crane Camshaft Co.r for GM Service Parts Division.
		This performance flat tappet hydraulic camshaft is used in the new 3.4-liter engine conversion package (P/N 12363230) and is also applicable to 2.8-liter and 3.1-liter engines.
		This camshaft kit is designed and manufactured by Crane Camshaft Co.® for GM Service Parts Division.
	www.gmpartsdirect.com /performance_parts/store/catalog/Category.jhtmlCATID=231.html (471 words)

	Basic Camshaft Installation Techniques, Motorhead Heaven
		If they are not, it could cause the camshaft bore to be distorted and seize the camshaft when the caps are torqued down.
		Because of the function and design relationship between the camshaft lobe and the lifter, it is extremely important that new lifters be used with a new camshaft.
		Because the camshaft and lifters are primarily lubricated bya splash-effect of oil from the crankshaft, any RPM below 1,500 may result in insufficient lubrication and will not rotate the engine fast enought to force the lifters to rotate on the camshaft.
	engineparts.com /Motorhead/techstuff/caminstall.html (1041 words)

	Camshaft Lobe Inspection
		Some camshaft and camshaft followers are hard to get a good look at so reach into the engine and use your finger nail and rub it across the lobes and the followers.
		In the past when we were disassembling engines and found ground down camshaft lobes we would collect a sample of the oil and send it out for analysis.
		In the late 1970's when Lycoming had a huge camshaft lobe problem with their '76 series engines, such as the O-320-H2AD, it became very apparent that oil analysis would not detect camshaft lobe failure until a very late stage.
	www.sacskyranch.com /camshaft.htm (1088 words)

	Pelican Technical Article: BMW Camshaft Timing and Vanos Unit Installation
		Make sure that the mounting holes located on the camshaft flange are visible through the slots in the sprocket, and also make sure that the holes are biased towards the left side of the slots, as is shown by the red arrow.
		This metal cap serves to trigger the camshaft position sensor, and lets the engine know whether the engine is on an intake or exhaust stroke of it's 4-cycle process.
		You have the new camshafts installed, you have the chain and sprockets properly setup, and we're ready to install the Vanos unit.
	www.pelicanparts.com /bmw/techarticles/E36-Camshaft-Timing/E36-Camshaft-Timing.htm (2091 words)

	Camshaft Installation
		Before beginning the installation of your new Go-Parts™ camshaft in your 5 HP Briggs and Stratton, we recommend that you read these instructions completely to familiarize yourself with the necessary tools and the procedures of properly installing your new cam.
		Due to the hardness of G0-Parts™ camshafts special lubricant is not required, you may use your usual engine lubricant/oil on it's surfaces.
		Note: Go-Parts™ has designed your camshaft to work with a given specific valve spring installed height and spring pressure for stock weight valves, stock OEM valve springs and spring retainers (Go-Parts™ dual springs and retainers on modified applications).
	www.compgoparts.com /TechnicalResources/Tutorials/CamshaftInstallation.asp (1340 words)

	Camshaft - Teletraan-1: The Transformers Wiki
		Camshaft is an Autobot in the Generation 1 continuity family.
		Camshaft is on the right, which is left in Japan.
		Camshaft and Downshift had their names swapped for their Japanese Transformers mail-away releases (which were also available in 1985), presumably because the RX-7 featured a rotary engine and therefore did not incorporate a camshaft.
	transformers.wikia.com /wiki/Camshaft (650 words)

	JUN HIGH LIFT CAMSHAFT
		The cam profile which influences the performance of a camshaft is the most important element in a camshaft design.
		The high camshaft must realize the conflicting element with which "extension of time which is opening the valve", and "reduction of negative acceleration".
		JUN high camshaft took positive acceleration large, and the action time of negative acceleration is keep a long time by shortening positive action time.
	www.junauto.co.jp /products/cylinderhead-part/camshaft/index.html?en (515 words)

	Camshaft selection
		A camshaft in a four stroke engine controls the opening and allows the closing of the valves in the cylinder head which in turn allow the fuel/air mixture into the engine prior to combustion, and allow the spent gases out of the engine following combustion.
		Obviously camshaft choice is not the only thing which determines engine output but is the thing which most significantly changes the nature and characteristics of the engines power delivery.
		The camshaft fitted to the 1300 (yes there is a 1300 pinto!) and the 1600 pintos is very conservative having only 256 degrees duration and 34 degrees overlap.
	hometown.aol.com /dvandrews/cams.htm (1821 words)

	Camshaft Innovations - About CI
		Camshaft Innovations are ground on a CNC machine.
		Each and every camshaft is designed for the application listed on the customer’s build sheet.
		Camshaft Innovations, has been racing and building winning engines for over 25 years.
	www.camshaftinnovations.com /AboutCI.htm (250 words)

	Camshaft 101- Car Craft Magazine
		Conversely, a very short duration camshaft opens the intake valve later and closes it sooner, reducing the potential for high-rpm horsepower but increasing torque at a lower engine speed.
		The camshaft spins at exactly half crankshaft speed, which is easy to tell with the timing chain and gear, with the cam gear twice the size of the crank gear.
		When installing a camshaft in an engine, performance engine builders and the blueprinting process demand that you measure or "degree" the camshaft to ensure that it is installed where the engine builder desires.
	www.carcraft.com /techarticles/116_0403_camshaft_basic (1633 words)

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