Lump Posted August 24, 2014 Share Posted August 24, 2014 I'm having some on going ignition issues with my bike at the moment. I'd like to replace the ignition leads - the current ones are a short length with a copper stranded center which attaches to the coils and spark plug caps. I tried buying an new ignition lead to cut up to replace them but it had a different centre without the copper and could be substiuted. Can you still get the copper centred ones and how to I spot the difference when picking them off the shelf at repco etc. Quote Link to comment Share on other sites More sharing options...
Rookie Posted August 24, 2014 Share Posted August 24, 2014 Yes you can, but it is basically limited to old auto electric shops and specialty old car places, I got mine from Hawkswood Classics, he is really good to deal with. Quote Link to comment Share on other sites More sharing options...
sheepers Posted August 24, 2014 Share Posted August 24, 2014 try scooter shops. old scooters need copper leads and they usually have some. Quote Link to comment Share on other sites More sharing options...
Valiant Posted August 25, 2014 Share Posted August 25, 2014 I think I might have some in the shed. I'll have a look tonight. Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted August 25, 2014 Share Posted August 25, 2014 Maybe dumb q but why's copper better? Just coz weaker ignition system? Quote Link to comment Share on other sites More sharing options...
Lump Posted August 27, 2014 Author Share Posted August 27, 2014 I think I might have some in the shed. I'll have a look tonight. Cheers Valiant, much appreciated Maybe dumb q but why's copper better? Just coz weaker ignition system? Probably isn't better, basically i need the copper ones to connect directly to the coil and spark plug cap Quote Link to comment Share on other sites More sharing options...
azzurro Posted August 27, 2014 Share Posted August 27, 2014 Maybe dumb q but why's copper better? Just coz weaker ignition system? Copper is lower resistance and able to transfer more of the electrical energy from weaker/older/smaller ingition systems to the combustion chamber. Higher resistance modern spark leads are primarily to reduce EMF (noise in the radio and other electronics), offset by more powerful/efficient ignition systems or something. Quote Link to comment Share on other sites More sharing options...
SOHC Posted September 2, 2014 Share Posted September 2, 2014 I understand more resistance makes the spark jump a bigger gap to. My old ford should have solid core leads but I have carbon ones on it. I always wondered about TOPGUN leads they sell for most cars, they all have a solid stainless core ? Quote Link to comment Share on other sites More sharing options...
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