How do you change a distributor Advanced curve?
You can change the rate of advance by changing the centrifugal advance springs to lighter ones. These springs are easy to replace by hand or with needle nose pliers. Changing the springs will give you an advance curve that starts at about 1,000 rpm, and ends at around 3,000 – 3,200 rpm.
How do you install a vacuum advance unit?
Remove the vacuum advance unit from the distributor. Set the new vacuum advance unit in place. Rotate the unit slightly and engage the unit operating rod into the metal strip on the distributor. Screw the two advance unit mounting screws using the standard screwdriver. Install the rotor on the distributor shaft.
How do you set mechanical timing on a vacuum advance?
Set the mechanical timing of the engine. Disconnect and plug the vacuum advance hose at the distributor and plug the hose. Connect the timing light inductive pickup to the No. 1 spark plug wire and connect the power leads to the vehicle battery.
How do you remove a vacuum advance hose?
Remove the vacuum advance hose plug and reconnect the hose to the distributor. Remove the vacuum advance hose at the carburetor. Connect the long-hosed vacuum gauge to the carburetor’s vacuum advance port.
When do you remove the vacuum advance in WOT?
But at WOT, the vacuum drops to near zero and vacuum advance is removed and the total timing then is established by the initial plus the mechanical advance. So there are significant advantages to retaining the vacuum advance on your distributor.
Remove the vacuum advance unit from the distributor. Set the new vacuum advance unit in place. Rotate the unit slightly and engage the unit operating rod into the metal strip on the distributor. Screw the two advance unit mounting screws using the standard screwdriver. Install the rotor on the distributor shaft.
How do you change the timing on a vacuum pump?
Disconnect the vacuum pump and insert a 3/32 Allen wrench into the port on the vacuum advance where the hose connects. There is a small adjusting screw in the vacuum advance. Turn the screw clockwise to decrease the vacuum advance and counterclockwise to increase the advance.
What should I do if my vacuum advance is not working?
A few pumps of a manually operated vacuum tester should provide a full advance, and the sliding plate should stay in place until you remove the vacuum from the port. Even if your car’s vacuum advance is working properly and holding negative pressure, there could still be a problem with the vacuum signal itself.
But at WOT, the vacuum drops to near zero and vacuum advance is removed and the total timing then is established by the initial plus the mechanical advance. So there are significant advantages to retaining the vacuum advance on your distributor.