Have you got a timing light with the advance feature on.
Ideally this is what you need.
You set the revs to approx 4000 rpm. then using the timing light set the timing to around 32 - 34 degrees BTDC
The timing marks are on the crank pulley left side of the engine.
This is done by slackening the clamp on the dizzy and turning the dizzy clockwise.
Then you need to test run the car, run it up a hill in to high a gear and listen for pinking, the engine will basically have a knocking noise and not sound right.
If it sounds healthy then leave it, if its not right, then go back and adjust the timing with the gun to around 30 - 32 degree. (turn dizzy anticlockwise)
test drive again..keep retarding the timing in 2 degree increments untill it sounds healthy with no pinking.
turning dizzy clockwise advances timing, anticlockwise retards it.
because the dizzy will have been tuned for a safe factory timing curve, you will probably find that tuning for max power at higher revs will give an unstable or higher tickover. only way round that is splash out on mapable ignition system or spends time retuning the dizzy with different springs and weights.
try googling for tuning A series, or lucas distributor
Edited by lrostoke, 08 June 2010 - 10:12 AM.
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