Ignition Advance Part 3 (Final!)
Posted: Tue Feb 13, 2018 10:58 amFurther testing of the cheapo distributor showed it to be inconsistent. The spring posts are of different diameters and , I suspect, the spring is sliding down the smaller post then jumping back at various revs so the advance suddenly jumps about 5 degrees.
I gave up!
Then a member kindly sent me a Distributor Doctor rebuilt, genuine 41198 to try and the difference in quality is obvious.
They are also a different length !
Anyway I've fitted it with a spare "halls" effect module (Accuspark / powerspark / aldon etc ) and marked
where the trigger ring is at TDC. This should make setting initial advance simpler.
As a further "keep it simple" mod I've marked the outer case with an advance / retard scale.
As it happens each mm on the diameter equals 2.5 degrees. (near enough.)
To be honest, if I was keeping the car, I would probably fit a 123 and not faff about.
I gave up!
Then a member kindly sent me a Distributor Doctor rebuilt, genuine 41198 to try and the difference in quality is obvious.
They are also a different length !
Anyway I've fitted it with a spare "halls" effect module (Accuspark / powerspark / aldon etc ) and marked
where the trigger ring is at TDC. This should make setting initial advance simpler.
As a further "keep it simple" mod I've marked the outer case with an advance / retard scale.
As it happens each mm on the diameter equals 2.5 degrees. (near enough.)
To be honest, if I was keeping the car, I would probably fit a 123 and not faff about.