Purpose of tube on timing tab
- Thread starter chengny
- Start date
Never mind, I found some info:
ELECTRONIC TIMING PROBE
Mostly on GM, a magnetic sensor fits into a tube by the front pulley (harmonic balancer). You view the timing degrees on an LED digital readout. All cars set up for this have traditional timing marks next to the hole for the timing sensor probe.
There is an additional socket next to the timing scale, it is a socket for a magnetic timing probe. Do not set the timing through this socket with a standard timing light. This socket is positioned 10 degrees ATDC and will yield inaccurate timing specifications if used with a standard timing light.
Many late model engines can be timed with a magnetic timing meter. This meter has a timing probe which is installed in a magnetic timing receptacle near the conventional timing marks. The timing meter also uses an inductive pickup which clamps over the number one spark plug. Once all connection are made, the engine is started, and timing can be read directly from the meter dial.
ELECTRONIC TIMING PROBE
Mostly on GM, a magnetic sensor fits into a tube by the front pulley (harmonic balancer). You view the timing degrees on an LED digital readout. All cars set up for this have traditional timing marks next to the hole for the timing sensor probe.
There is an additional socket next to the timing scale, it is a socket for a magnetic timing probe. Do not set the timing through this socket with a standard timing light. This socket is positioned 10 degrees ATDC and will yield inaccurate timing specifications if used with a standard timing light.
Many late model engines can be timed with a magnetic timing meter. This meter has a timing probe which is installed in a magnetic timing receptacle near the conventional timing marks. The timing meter also uses an inductive pickup which clamps over the number one spark plug. Once all connection are made, the engine is started, and timing can be read directly from the meter dial.
