What makes a cam 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.
What is the biggest cam in the world?
Black Diamond Introduces a #21 Camalot, World’s Largest Cam.
What does a car being cammed mean?
The term “camming” refers to the modification of a truck’s camshaft. While it may sound justifiably complex, the process of changing out the camshaft allows you to build a custom engine that performs better within a particular RPM range.
What do the numbers on camshafts mean?
The are two measurements, duration and valve lift. The duration of measured in degrees ex 278, 288 like you gave. This measures how long the valve will stay open. For example, 278 degrees of rotation of the roller the valve will be closed. The other 82 degrees of rotation is where the valve will be open.
What gives a cam a rough idle?
Again, keeping all else constant, more duration will make the engine less efficient at low rpm, with more overlap dilution of the induction charge, and the later intake valve closing reducing the trapping efficiency. Therefore, a long-duration cam will cause rough running at idle (lope) and a loss of low-rpm torque.
What is cam lope?
Lope is a result of the intake and exhaust valves both being open at the same time. This is called overlap. Mild cams have little or no overlap at any valve opening that makes a difference. Hotter aftermarket type cams have a lot because it aids high RPM breathing.
What is a ghost cam?
Ghost Cam tunes utilize the Mustang’s Twin Independent Variable Cam Timing (TiVCT) to make the engine sound and feel race-ready. 130 seconds have elapsed since the engine coolant temperature reached 170 °F (77 °C) while the engine is running.