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That is called the lift
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∙ 11y ago
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What is a camshaft lift?
It is a measure, in thousandths, of how far the cam lobe lifts the valve open, off of the seat.
What happens when if lift and duration remain constant and the camshaft lobe center angle decreases?
the valve oerlop increase
When does a valve in the camshaft close?
valves open and close by raised lobes on the camshaft . they hit the connecting rod, which is connected to the rocker arm that open and closes a spring loaded or hydraulic valve lifters . the intake or exhaust valve is open when when the raised lobe hits the connecting rod. the valve closes when the cam shaft rotates and the connecting rod falls off raised lobe.
What is a lifter for a Camaro?
It is an engine piece, that rides on the lobe of the camshaft, and raises the pushrod, which pivots the rocker arm, and opening the valve.
What is a radical camshaft?
First of all, the camshaft's job is to open and close intake and exhaust valves. It's made up of teardrop shaped lobes, and when the lobe turns away, the valve spring closes the valve. This is precisely timed, so the lobes are aligned just so. On a radical camshaft, the lobe shape is exaggerated so the valves open wider and longer, packing more air into the intake, and letting more out the exhaust. The result is more airflow through the engine, and more power.
How do you measure a camshaft lobe lift?
With Old fashion guages that measure the normal size of the run and then the rise of the lobe.
What is the purpose of a valve spring in a petrol engine?
The valve spring is the spring that closes the valve in the engine head after the cam lobe or rocker opens it . If the valve didn't close, many things would happen , the main one being the motor would not fire .
What does the heel of the camshaft do?
A cam lobe, is an eccentric. The heel of the lobe, would be the non active, flat part of the lobe. Non active, as it is the non active portion, of the cycle.
What is the difference between a solid camshaft and a hydraulic camshaft?
The function of a camshaft is to open, and close the valves. When the motor gains rpm's, the valves, which already undergo a pretty violent cycle, get to hammering away at themselves, and their seats, in the head. A hydraulic lifter has a spring, and uses oil pressure, to cushion this act, and ease the hammering on the valves. The camshaft lobe, also has more of a gradual arc, to the high point of the lobe, thus increasing distance of travel, and further slowing down, and easing the open/close, process. The advantage. Longer egine life, quiter operation, better driveability, smoother operation. The cost, horsepower. An engine is like an air pump. Except, the more air you put through it, the more power, you get out. A solid lifter is just that, solid. No spring, or oil pressure cushion. So, the action at the valve is more positive, and harsh. A solid lifter cam lobe is structured different. The ramp on the lobe, The part of the lobe between the base circle, or heel of the lobe, to the fullest open point, is straight. No cushion, or arc. Advantages: more horsepower. Disadvantages: Noisey, shorter valve life, need to be adjusted more often, which is a different adjustment than hydraulics, by the way, less smooth operation. Should only be used for high performance, as often, different valve train parts are needed for dependablity, as well as basic operation.
How do you fix a flat cam lobe?
New camshaft, they are machined whole so there are no parts that you can replace
What is each rocker for on top of a cylinder head for a 1994 s10 2.2?
The rocker arm is a reciprocating lever that conveys radial movement from the cam lobe into linear movement at the poppet valve to open it. One end is raised and lowered by the rotating lobes of the camshaft (either directly or via a lifter (tappet) and pushrod) while the other end acts on the valve stem. When the camshaft lobe raises the outside of the arm, the inside presses down on the valve stem, opening the valve. When the outside of the arm is permitted to return due to the camshafts rotation, the inside rises, allowing the valve spring to close the giver.The effective leverage of the arm (and thus the force it can exert on the valve stem) is determined by the rocker arm ratio, the ratio of the distance from the rocker arm's center of rotation to the tip divided by the distance from the center of rotation to the point acted on by the camshaft or pushrod.For car engines the rocker arms are generally steel stampings, providing a reasonable balance of strength, weight and economical cost. Because the rocker arms are part of the reciprocating weight of the engine, excessive mass limits the engine's ability to reach high operating speeds.( http://en.wikipedia.org/wiki/Rocker_arm )
Why does my 1979 350 Chevy engine backfire through the carburetor above 3000 rpm?
The valve timing is offAnswersounds like a possible worn camshaft lobe. a fairly common problem on late 70's Chevy small blocks
