Ignition resistive wire replacement (small block points ignition)
Posted
#1552276
(In Topic #208073)
Old Timer
I need to replace the resistive wire (white/lilac) from ignition to coil on a small block with points ignition,
Was thinking of replacing it with a ballast resistor but not sure what type to use?
Read somewhere it should be 0.9ohm, but I can only find ones that say 1.5 or 1.6ohm like this:
http://www.ebay.co.uk/itm/LUCAS-TYPE-BALLAST-RESISTOR-1-6-OHM-IGNITION-COIL-CLASSIC-TRIUMPH-AUSTIN-47222-/261319911135?hash=item3cd7e166df:g:nXkAAOxy2YtRwxwA
That says "used in ignition circuits where the ignition coil is 9 volts", would this work?
If not does anyone know the best way to go about this? i.e what wire to use to directly replace the white/lilac wire without a ballast resistor? Or any other ways?
Appreciate any help
Cheers
'83 formel e
Posted
Old Timer
I think I would be tempted to do away with the ballast and have a standard 12v coil, have you got one you could try, or borrow one. I used to run an old 895cc Polo which didn't have a ballast resistor and started okay but did start and run much better on super unleaded.
Cheers
Last edit: by cedar
Posted
Old Timer
I've since found that the white/lilac wire has been cut halfway along then spliced with 2 random grey wires to the coil
For now I've just spliced the white/lilac wire back together but I'm only getting about 8 volts down at the coil
I've also noticed that it's got a normal 12volt coil fitted with about 3.4 ohms primary.. so that needs to be changed
I did then think about getting rid of the ballast, but I was under the impression that running a 12v system can burn the points out pretty quick?
Cheers
'83 formel e
Posted
Old Timer
You still have the white/lilac resistance wire in the circuit, with a couple of joints by the sound of it, and that's why you only have 8v at the coil, although it should be nine or thereabouts. You could either fit a 9v coil and leave the wiring as is or do away with the white/lilac wire etc and run a normal wire in it's place, keeping the 12v coil, personally I prefer the simple life and would go for the 12v option.
Posted
Old Timer
I'd probably do the same with the 12v option if I were keeping it, but I'm just sorting it to sell so not too fussed!
'83 formel e
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