What does it mean when a camshaft has more lift?
What does it mean when a camshaft has more lift?
More cam lift means the valve will open further. Increasing cam lift will allow more air or exhaust to move through an engine. If you plan on upgrading your cam to increase lift, you must be sure your valve springs are capable of handling a cam with increased lift. Piston to valve clearance can also become an issue.
What’s the difference between valve lift and cam lobe lift?
It’s important to be aware of a few ways camshaft lift is talked about. Cam lobe lift, also called Gross Lift, is the distance a cam moves a lifter/tappet. Because a rocker armmultiplies the movement of the tappet, valve lift is not the same as cam lobe lift.
Can a flat tappet camshaft handle more pressure?
Flat tappet camshafts can only withstand so much valve spring pressure pushing the lifter against the cam lobe. As you increase valve spring pressure on a flat tappet cam, you increase wear on the cam lobe and the cam contact face of the lifter.
What happens when you increase spring pressure on a tappet Cam?
As you increase valve spring pressure on a flat tappet cam, you increase wear on the cam lobe and the cam contact face of the lifter. This is a limiting factor when compared to a roller setup. To build big horsepower you need to have a cam with a lot of lift to open those valves wide.
What’s the difference between camshaft lift and valve lift?
Camshaft Lift. Cam lobe lift, also called Gross Lift, is the distance a cam moves a lifter/tappet. Because a rocker arm multiplies the movement of the tappet, valve lift is not the same as cam lobe lift. A 1.5:1 rocker arm ratio takes .4 inches of lobe lift and moves the valve 1.5 times the lobe lift.
Why are cam lift duration and cam lift important?
Where cam lift and duration describe the effect of each lobe on a valve. Cam Lobe Separation is an important performance characteristic because it times the intake and exhaust valves. If the Lobe Separation angle was 0 degrees, both intake and exhaust valves would be opened and closed at the same time.
Flat tappet camshafts can only withstand so much valve spring pressure pushing the lifter against the cam lobe. As you increase valve spring pressure on a flat tappet cam, you increase wear on the cam lobe and the cam contact face of the lifter.
As you increase valve spring pressure on a flat tappet cam, you increase wear on the cam lobe and the cam contact face of the lifter. This is a limiting factor when compared to a roller setup. To build big horsepower you need to have a cam with a lot of lift to open those valves wide.
