Each camshaft operates two of the valves, one camshaft handles the intake valves, and one handles the exhaust valves. Having four valves per cylinder gives an engine several advantages. By having four valves in a cylinder instead of two, a larger portion of the area can be used to let air in and exhaust out.
What does a cam do in an engine?
A camshaft is a metal rod that drives an engine. There are one or more cams, or irregular lobes, that actuate parts of the machine along the rod. As the shaft rotates, the larger parts of the lobes can drive levers or pistons.
Does a cam damage engine?
A broken camshaft can have a major impact throughout the top end of your engine, doing serious damage to parts like the crankshaft, cylinder block and head, valves, pistons, and connecting rods.
Does a cam increase mpg?
I can see a more efficient cam increasing mileage, no problem. Remember all V8s have camshafts, they are just setup to do different things. If the cam gives a good increase in low end torque, you dont have to mash the gas as deep to go.
Is DOHC better than VTEC?
Just wondering what are the main differences between DOHC vtec and SOHC i-vtec. Essentially speaking the biggest difference is the number of camshafts the engines have. DOHC engines are designed to rev higher, have peakier power outputs and PERHAPS high horsepower application.
What is the advantage of a Twin-Cam engine?
Benefits of a twin-cam
The design of a DOHC allows for less restricted airflow at higher speeds. If the engine also has a multi-valve design, it also experiences improved combustion for better efficiency because of the placement of the spark plug.
What causes a cam to go bad?
A broken camshaft is usually caused by a connecting rod or other rotating part coming loose and striking it. Sometimes the cam will break after a short time of use because of a crack or fracture in the cam due to rough handling during shipping or improper handling prior to installation.
Is it safe to cam a stock engine?
Registered. You can’t swap just the cam and nothing else. Not counting the fact that sticking in a big cam in a stock engine and it running worse due to a mismatch with cylinder head and intake airflow, at the very least you MUST swap the springs.
Are cammed cars illegal?
It is illegal, but a lot of of people get away with it. I think if your car is moded; cam,loud exhaust, then there is a better chance you will be busted for the tail lights. A stock car that does not attract so much attention will have a better chance of not being busted; but it is only a matter of time.
How much HP does Heads and cam add?
Gone was the mild-mannered, gentle performer, replaced by a high-rpm speed freak! The cam swap increased the power output from 336 hp and 345 lb-ft to 414 hp at 6,800 rpm and 363 lb-ft of torque at 5,400.
What makes a cam sound lumpy?
what makes the cam have that lumpy sound? The overlap of the exhaust valve closing and intake valve opening causes the engine to be inefficient at low speed which results in the lumpy idle. The closer the Lobe Seperation Angle the more the overlap, the more duration the more (typically) the overlap.