timing.
Race Director
Joined: Oct 2000
Posts: 16,477
Likes: 1
From: Enter Post Count Here
Re: timing. (devilfish)
First of all, you need to disconnect the computer advance, which is a tan wire on the left side of the engine. It is kind of hidden, and it will probably take you a while to find, I know it did me. It is between the windshield wiper motor and brake booster, closer to the windshield wiper motor.
Once this wire is connected, get a timing light, attach it to the battery with the power wire(red) on the positive battery terminal, and the ground wire (black) on the negative battery terminal. Attach the spark plug lead to spark plug wire #1. This wire is the furthest forward on the drivers side of the engine. The wire should rest in the cradle in the connector, it should not be pinched.
Now, you may have to clean off the timing marks, look between the water pump pully and air-pump pully and you'll see the harmonic balancer and hopefully a timing tap. Clean this thoroughly(don't use water on an LT-1 for those with newer cars reading this). Now, with the timing light and wires out of the way, start the car. Point the timing light at the timing tab, and pull the trigger. Most timing lights require that you hold the trigger, some newer ones stay on until you pull the trigger again.
You should see a timing mark on the harmonic balancer appear to be stationary as the light flashes. Determine the degrees that the mark is on the timing tab. It should be between 6 and 8 degrees.
If it is not there, post back and we'll explain how to adjust the timing.
Good luck. :) And don't forget to plug the computer advance back in after you're done.
Once this wire is connected, get a timing light, attach it to the battery with the power wire(red) on the positive battery terminal, and the ground wire (black) on the negative battery terminal. Attach the spark plug lead to spark plug wire #1. This wire is the furthest forward on the drivers side of the engine. The wire should rest in the cradle in the connector, it should not be pinched.
Now, you may have to clean off the timing marks, look between the water pump pully and air-pump pully and you'll see the harmonic balancer and hopefully a timing tap. Clean this thoroughly(don't use water on an LT-1 for those with newer cars reading this). Now, with the timing light and wires out of the way, start the car. Point the timing light at the timing tab, and pull the trigger. Most timing lights require that you hold the trigger, some newer ones stay on until you pull the trigger again.
You should see a timing mark on the harmonic balancer appear to be stationary as the light flashes. Determine the degrees that the mark is on the timing tab. It should be between 6 and 8 degrees.
If it is not there, post back and we'll explain how to adjust the timing.
Good luck. :) And don't forget to plug the computer advance back in after you're done.
Racer
Joined: Jul 2001
Posts: 253
Likes: 0
Re: timing. (NoWorries)
Sorry, NoWorries - This is being petty.... but since Devilfish was asking about something as basic as how to check the timing (nothing wrong with that), I thought it should be as clear as possible. I know that *you* knew what you meant to say when you said:
"First of all, you need to disconnect the computer advance, which is a tan wire on the left side of the engine.....Once this wire is connected, get a timing light,..."
You meant to say - Once this wire is *dis*connected.... -
Of course, disconnecting this wire stops the electronic advance of the timing. Again, I know you knew that...:cool:
I know - petty, but clearer. No harm, no foul. :cheers:
"First of all, you need to disconnect the computer advance, which is a tan wire on the left side of the engine.....Once this wire is connected, get a timing light,..."
You meant to say - Once this wire is *dis*connected.... -
Of course, disconnecting this wire stops the electronic advance of the timing. Again, I know you knew that...:cool:
I know - petty, but clearer. No harm, no foul. :cheers:
Racer
Joined: May 2001
Posts: 378
Likes: 0
From: Dunmore, Pennsylvania
Re: timing. (devilfish)
I did mine last weekend, it was just like mentioned above. I found the wire to disconnect taped to the outside of large harness
between the wiper motor and brake booster. Not a bad job, my timing was set to 4degs before so I loosened the distributor
bolt and turned the dist till I got 6deg before. The marks were easy to see and I did not need to clean anything first.
Good luck.
between the wiper motor and brake booster. Not a bad job, my timing was set to 4degs before so I loosened the distributor
bolt and turned the dist till I got 6deg before. The marks were easy to see and I did not need to clean anything first.
Good luck.
