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Solid Core Vs. Suppression

3K views 4 replies 5 participants last post by  RetroRod 
#1 ·
I am running a Sparx ignition on my T120 motor. I have one reliable triumph friend saying "solid core" and another saying "suppression" The only disadvatage i can see would be that solid core would possibly over heat the ignition. But I wouldn't bet on that. What do you guys think?
 
#2 ·
I was told you could run solid core as long as you fitted resistor caps or used resistor plugs, but after my EI fried (bad rectifier) I went back to points
 
#3 ·
I think the Sparx EI is OK without supression caps or plugs. I know they weren't mentioned in the instructions I got with the two I installed on my bikes and I haven't had any problems with either of them. The people that sold me a Podtronics regulator/rectifier said it required resistor caps but the instructions don't mention the need.
 
#4 ·
SOME of the EI ignitions and SOME of the 3-phase alternator units require resistive plug caps in order to operate. If you have one of those units the instructions will direct you to install resistive plug caps.

If you are not being instructed to install the resistive plug caps, then by all means DO NOT. And stay far away from resistive plug wires.
 
#5 ·
Without contradicting GAMBA, I've always believed that resister HT wires and caps were about radio wave suppression.

We know that copper cored cables in the older car played havoc with the radio, and I have read that unsuppressed ignitions can make modern engine management systems have a nervous breakdown.

So, if you're like me, with unsuppressed HT cables, I do smile when I pull up alongside that shiney hi-tech car, giving the old girl a good rev, and wonder if the computer driven engine next to me is acting as if it was on wacky weed!!

I know, this is very naughty!!

I run a Pazon EI by the way. RR
 
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