Ignition Timing Status
Thread Starter
Safety Car
Joined: Jun 2004
Posts: 4,652
Likes: 80
From: Lakeland Florida
Ignition Timing Status
Hello,
On Saturday I decided to do the Lars timing method on my 73 BB.
1. Remove the springs from the distributor, disconnect and plug the vac. line.
2. Start the engine and adjust the timing to 36 degrees.
3. Install the springs ( black ones ) and check the timing. It was at 11 degrees. The paper says that this is my curb or idle timing spec.
4. connect the vac advance line and rev the engine until the timing is stationary, and does not advance anymore.
5. This showed 54 degrees at 2300 rpm.
From what I have been reading on the threads this should be about where I should leave it. Due to tall the rain here in California I cant go
out and road test it yet.
Did I make any obvious mistakes, or do these settings look ok.
kdf
On Saturday I decided to do the Lars timing method on my 73 BB.
1. Remove the springs from the distributor, disconnect and plug the vac. line.
2. Start the engine and adjust the timing to 36 degrees.
3. Install the springs ( black ones ) and check the timing. It was at 11 degrees. The paper says that this is my curb or idle timing spec.
4. connect the vac advance line and rev the engine until the timing is stationary, and does not advance anymore.
5. This showed 54 degrees at 2300 rpm.
From what I have been reading on the threads this should be about where I should leave it. Due to tall the rain here in California I cant go
out and road test it yet.
Did I make any obvious mistakes, or do these settings look ok.
kdf
Tech Contributor
Joined: Aug 1999
Posts: 14,376
Likes: 6,375
From: At my Bar drinking and wrenching in Lafayette Colorado
Originally Posted by kdf1986
Did I make any obvious mistakes, or do these settings look ok.
kdf
kdf
Have you tried the car out yet with this setup? How does it feel?
Thread Starter
Safety Car
Joined: Jun 2004
Posts: 4,652
Likes: 80
From: Lakeland Florida
Lars wrote.."Have you tried the car out yet with this setup? How does it feel?"
I have not driven the car yet. It is pouring rain here in San Jose, and I will probably have to wait for the weekend until it clears up.
kdf
I have not driven the car yet. It is pouring rain here in San Jose, and I will probably have to wait for the weekend until it clears up.
kdf
Thread Starter
Safety Car
Joined: Jun 2004
Posts: 4,652
Likes: 80
From: Lakeland Florida
Originally Posted by kodaclr
Can I ask what Lars paper you used to determine the timing and set up. Your discription made it sound easy for a novice like myself.
Thanks
Thanks
http://www.corvettefaq.com/c3/HowToSetTiming2.doc
The title is: How to Set Your Timing for Peak Performance
(Non-HEI) by Lars Grimsrud
I read through the paper several times, and then broke it down to just the basics so that I could write it out, and use it during the adjustment.
It helps to have done this before to know what the springs are that he refers to etc.
And I learned something, and would like to pass on a tip. When you take the springs off the posts, they have a tendency to fly off. I guess thats why they are called SPRINGS. To help me get over this so that I dont lose any, or they end up where they should not, I used a paper clip that I uncoiled, then pushed through the springs before I tried to take them off with a needle nose pliers. This allowed me something to hold the springs with, and when they came loose I did not have to worry about them flying off into space.
kdf
