To open/close the intake/exhaust valves.
A two-stroke engine does not have a cam or camshaft. Seeing there is no intake/exhaust valves it would be pointless to have a camshaft.
It has two. One intake and one exhaust.
In a dual overhead cam (DOHC, twin cam, etc.) engine, the intake cam is the camshaft contolling the intake valves. Thus the opperation of the exhaust valves is left to the exhaust cam.
A stretched timing chain on a DOHC engine will cause a retarded intake camshaft timing and a slightly retarded or normal exhaust camshaft timing. The intake cam will take most of the stretch, leaving the exhaust cam mostly normal. The results of a retarded intake camshaft will be improved fuel economy due to less air-fuel drawn in during the intake stroke. Also, IF the exhaust camshaft is retarded from excessive timing chain stretch the result will be a lower NOX emissions due to exhaust gas being drawn in during the intake stroke, lowering the overall combustion chamber temperature.
If you want a stocker,you could use cast iron heads with 1.94 intake/1.60 exhaust valves.For your camshaft,you could use 423"intake/446"exhaust...Nothing special.If you want a little more performance,something that will turn heads,a weekend racer,or to seek and destroy rice burners,step up to cast iron or aluminum 2.02 intake/1.60 exhaust heads.For your camshaft,you could use a 498"intake/498"exhaust rough idle roller camshaft,with roller lifters.For race/competition,you could use ported and polished aluminum heads with 2.08 intake/1.60 exhaust.For your camshaft,you could use a roller 544"intake/567" exhaust with roller lifters.You could go either way YOU want.Just trying to ballpark it for you.
the camshafts are identical,take the bolt out of the camshaft sprocket and you will see how the camshaft pin is positioned, that is what makes a intake camshaft or a exhaust camshaft
The camshaft closest to the intake manifold (closest to the passenger cabin) is the intake camshaft on the dual camshaft Saturn engines.
It is on the top of the engine on the passenger side. There are two of these. One for intake and one for exhaust.
The crankshaft is turned by the pistons going up and down. The cam shaft is driven by the timing belt or chain that is turned by the crank shaft. The camshaft on a four cycle engine turns 2 to 1 crankshaft revolution. The cams on the camshaft operate the intake and exhaust valves. intake valve on one revolution and exhaust on the next.
Exhaust camshaft sensor signal and the intake camshaft sensor signal. Happened to my BMW few days ago.
Your exhaust lines up with exhaust pipes ,your intake lines up with your intake runners.
The exhaust lifters will line up with the exhaust manifolds,Remove the valve cover if your working on a V8 and the valve that lines up with the exhaust port will be the exhaust valve,If it is a Chevy V8 they will be from standing in front of the car exhaust,intake,intake,exhaust,exhaust,intake,intake,exhaust.
look at the head with the valve cover off find where the exhaust manifold goes in tha is the exhaust valve or looking at the valves the first one is exhaust then intake then intake ,exhaust,exhaust,intake,intake,exhaust if you have the head off i think the intake valves are bigger than the exhaust
the camshaft is i metal rod that has tear drop shaped lobes that control when the intake and exhaust valves open and close.
Real simple exhaust camshafts are the camshafts nearest the exhaust manifolds ( outside if cylinder heads) intake camshafts are on the inside closer to center of engine.
The camshaft's main function is to open and close the Intake and Exhaust valves...On some cars it drives the distributor as well.
yes but only if it is a 4 stroke the cam or camshaft controls the fuel intake and exhaust valves
-intake: exhaust closed, intake open -compression: exhaust closed, intake closed -combustion: exhaust closed, intake closed -exhaust: exhaust open, intake closed
the intake are next to the carb and the exhaust are next to the exhaust manafold intake are .008 exhaust are .012 with the engine warm good luck
it flows exhaust to the EGR value
Yes, there are 2 camshafts on a 1.8T GTI. The engine uses a 20 valve design, meaning 5 valves per cylinder. For each cylinder 3 valves are intake valves and 2 valves are exhaust valves. One camshaft drives the intake valves and the other camshaft drives the exhaust valves
A camshaft opens/closes the intake/exhaust valves at predetermined points of the piston travel. The cam is driven by the crankshaft, the rotating cam lobes operates thru lifters/followers that ride against the lobes.
Imagine a plane in space (like your workbench tabletop) and rotate the camshaft about its center axis such that the cam lobes become tangent with or "just barely touch" that plane. Each time the lobe is tangent it is opening a valve. The order in which those valves open is the order in which the cylinders fire. This is true whether you're looking at an intake cam or an exhaust cam. The cylinders all fire in the same order that they're filled with intake charge; they also fire in the same order that they are evacuated of their exhaust gasses. If you have a single cam that controls both intake and exhaust valves, this method requires that you know which lobes open the intake valves and which open the exhaust valves, and only pay attention to one set.