Easy lifehacks

# Do cam lobes open each valve?

## Do cam lobes open each valve?

The camshaft consists of a cylindrical rod running the length of the cylinder bank with a number of cams (discs with protruding cam lobes) along its length, one for each valve. A cam lobe forces a valve open by pressing on the valve, or on some intermediate mechanism, as it rotates.

## What are the two parts of a cam?

A CAM has two parts, the FOLLOWER and the CAM PROFILE. Diagrams one to six show a rotating cam pushing a follower up and then allowing it to slowly fall back down. In diagram 1 the cam is in a vertical position and it slow rotates in an anticlockwise direction.

## What is cam lobe?

Cams located on the camshaft that open and close the intake and exhaust valves in time with the motion of the piston. Cam lobes control the valve lift, and there is a direct relationship between the shape of the cam lobes and the way the engine performs in different speed ranges.

## What is the function of cam lobes?

For every 2 revolutions of the crankshaft, the camshaft rotates 1 revolution. The lobes on the camshaft actuate the valve train in relation to the piston movement in an internal combustion engine. The camshaft determines when the valves open and close, how long they stay open and how far they open.

## How big are the lobes on a DMM Dragon cam?

The DMM Dragon Cam Set 0, 1, 2, 3, 4, 5 contains six cams, sizes 0-6. Unique to the Dragon Cams are the ‘TripleGrip’ lobes. Compare the lobes of a BD or WC cam to the lobes of a Dragon cam you’ll notice the difference: each of the Dragon’s lobes are split into three sections.

## What kind of Hall effect does a camshaft position sensor use?

The Hall-effect type uses an external power source to produce a digital signal (a “square wave,” on-or-off) and has three wires. Note: If you are new to all this, you should know that the camshaft position sensor is a different part from the crankshaft position sensor.

## Where is the camshaft position sensor on a GM car?

Look around the top section of the timing belt/chain cover (in the front of the engine) or at the rear end of the cylinder head. Some GM models may have a special compartment for the sensor.

The Hall-effect type uses an external power source to produce a digital signal (a “square wave,” on-or-off) and has three wires. Note: If you are new to all this, you should know that the camshaft position sensor is a different part from the crankshaft position sensor.

## How is camber measured in a car alignment?

Camber is measured in degrees when performing an alignment. Some vehicles come with camber bolts already in place as 1 of the 2 strut bolts. The camber bolt has an off-centered lobe that manipulates the vertical position of the knuckle and wheel to a slight degree. Most often, camber measurement can be corrected with a camber bolt.

## Which is the correct way to adjust a camber bolt?

One of the strut bolts (usually the top bolt for rear struts or the bottom 1 for front struts, but there are exceptions) will have a washer with a small tab-like handle (aftermarket camber bolt) or the bolt will have an offset eccentric bolt head (original equipment). Loosen the non-camber bolt first with the impact gun and a socket.

Look around the top section of the timing belt/chain cover (in the front of the engine) or at the rear end of the cylinder head. Some GM models may have a special compartment for the sensor.

Ruth Doyle