Advance timing light question
Thread Starter
Burning Brakes
Joined: Feb 2004
Posts: 758
Likes: 14
From: Ville de la Baie Quebec. A winner is just a loser who tried again.
Advance timing light question
Hello
I have been timing my vette with a regular timing light with success in the past. I've been using Lars paper as a quide and had no problems. Over the winter a came accross a timing light with the advance feature and knowing it is supposed to be easier to use I jumped on it immidiatly.
Is it correct to say if I set the light to 36deg, point it to my damper, I should be aligning the TDC to the marker ?? Or is it the 36deg mark?? I am aware of the procedure as stated in the tech paper, but the light part is a little fuzzy,,lolll (maybe its the beer)... Thanks for the help !!
I have been timing my vette with a regular timing light with success in the past. I've been using Lars paper as a quide and had no problems. Over the winter a came accross a timing light with the advance feature and knowing it is supposed to be easier to use I jumped on it immidiatly.
Is it correct to say if I set the light to 36deg, point it to my damper, I should be aligning the TDC to the marker ?? Or is it the 36deg mark?? I am aware of the procedure as stated in the tech paper, but the light part is a little fuzzy,,lolll (maybe its the beer)... Thanks for the help !!
Pro
Joined: Jun 2002
Posts: 538
Likes: 7
From: Johnsonville Wi
Timing
Well. that 36 degrees would be at enough rpm (3,000 or so) to make sure that mech. advance is in with vac can disconnected and the line to the manifold plugged. You should probably start by making sure you got 12 degrees or close at idle (set your new light at 12 and line up for TDC) with the vac plugged, then rev till you get no more advance and check that it's about 36. Can't be idling so high that the mech. advance weights are starting to fly out (700-800 rpm should be OK.)
For initial timing a dial back light isn't any better than a regular light, but it allows you to verify full advance when your damper isn't marked high enough,and if you chart the advance at various prms, you can see your full curve (I assume the light provides rpm readout also).
Feel free to slap me if I'm wrong on this, always learning.
Daffy
For initial timing a dial back light isn't any better than a regular light, but it allows you to verify full advance when your damper isn't marked high enough,and if you chart the advance at various prms, you can see your full curve (I assume the light provides rpm readout also).
Feel free to slap me if I'm wrong on this, always learning.
Daffy
Tech Contributor
Joined: Aug 1999
Posts: 14,380
Likes: 6,390
From: At my Bar drinking and wrenching in Lafayette Colorado
Using a dial-back light, you only use the "0" mark on your timing tab. All readings are taken off the light with the harmonic balancer line aligned with the "0" line.
