When does a cam line up with the crankshaft?
When a cam is installed “straight-up,” the imaginary centerlines of the two shafts line up exactly. Advancing or retarding the cam pushes the centerline of the camshaft to one side or the other of the crankshaft centerline.
Where does the crankshaft go when setting to TDC?
So, if you simply set the crankshaft to TDC without looking at the position of the camshaft, you may actually be at TDC on the exhaust stroke for cylinder #1.
Why is the ignition timing 180 degrees out?
This was referred to as being “180 degrees out” because the distributor or point plate was 180 degrees away from the correct position on the camshaft because of this. Actually, going by the crank, the ignition timing was 360 degrees out.
How does advancing or retarding a camshaft work?
Advancing or retarding the cam pushes the centerline of the camshaft to one side or the other of the crankshaft centerline. This changes the Timing of the valve opening and closing events, in relation to the position of the piston in the cylinder. How is it measured? Find the lobe centerline in relation to the piston’s position in the cylinder.
When a cam is installed “straight-up,” the imaginary centerlines of the two shafts line up exactly. Advancing or retarding the cam pushes the centerline of the camshaft to one side or the other of the crankshaft centerline.
Where is the cam mark on a crank sprocket?
Installed Cam Sprocket, turned the mark to be at the bottom. Installed the Crank Sprocket on the factory keyway, and then I lined up the two marks. cranks mark was on top of its sprocket and cams mark was on the bottom. Is it possible This is wrong?
What happens when a cam is installed straight up?
When a cam is installed “straight-up,” the imaginary centerlines of the two shafts line up exactly. Advancing or retarding the cam pushes the centerline of the camshaft to one side or the other of the crankshaft centerline. This changes the Timing of the valve opening and closing events, in relation to the position of the piston in the cylinder.
Why do you need a catch can on a crankcase?
The purpose of ventilating it to the aircleaner, is to have venturi vacuum assist in the ventilation of the crankcase fumes. Crankcase fumes contain a small percentage of unburned fuel, or Hydrocarbons. Venting it to the atmosphere, or a catch can, is just as good.