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Wednesday, 8 January 2025

Spark Plugs / High Tension Leads

The good news:  thinking about spark plug leads means I am getting closer.

The bad news:  NOTHING ON THIS GOD DAMN ENGINE IS STANDARD.

Full disclosure:  I do not have much experience making spark plug leads.  I have made a set for 1 side of the ignition on the Emeraude, and they are a PITA.  I have never made an automotive style plug lead.

UL has a blog post that documents how you make up a lead.  It is very informative... however, they crimp the leads with a pair of needle nose pliers.  Really?  How about a real crimper - PLEASE.

Being new at this, I started looking for how to do this correctly.  There has to be a proper crimper for this.

Everything in North America is 8 to 8.5mm.  Well the UL leads are 6.5mm.  I cannot find a crimper.  Luckily there is a fellow at my airport with a 4 cylinder UL so I asked him.  He bought 4 pairs of crimpers before he found the right one.  Really?  Luckily he loaned it to me.  Will document it more later in the post.

On top of that, it is recommended to solder the connection.  Not a fan.  Solder cracks and breaks on an engine.  A proper crimp is the way to go IMO.

The engine comes with a bunch of cable and ends.  12 crimps... no spares.  Oh, and they are $4 USD each from Wicks.  Really?

After many months, these are DONE.









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