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Dizzy convert to no vac
Trollyjack - 30/6/15 at 02:24 PM

How do I convert mt current vac type dizzy to none dizzy for better performance.
1300 crossflow

britishtrident - 30/6/15 at 02:33 PM

quote:
Originally posted by Trollyjack
How do I convert mt current vac type dizzy to none dizzy for better performance.
1300 crossflow


Won't improve the performance, the VAC advance only has any effect at light throttle openings and loads.
At full throttle the engine is only using centrifugal advance.

DW100 - 30/6/15 at 02:34 PM

Lock the base plate so it can't rotate and don't connect the vac pipe.

Was only done really on side draught carbs because often the vac signal was only taken from one port and caused the vaccum to pulse. Vacuum advance is there to improve part load drivability.

mcerd1 - 30/6/15 at 02:40 PM

As above, its only done to get around the problem of erratic vac. signal with multi carb setups

If anything non-vac dizzys make the engines performance worse.....
Top end power might not suffer, but throttle response and fuel economy will both suffer


If you want the best possible ignition system then you need to look at 3D distributorless systems like Megajolt or nodiz

[Edited on 30/6/2015 by mcerd1]