I don't know what Heli core is, but I don' think it's stranded metal core.
You need to use stranded metal core wire.
8mm silicone doesn't mean much, the core is what matters.
This is the helically wound MSD wire. It's the very best plug wire made, IMO. Not very convenient for using as replacement OE wires, though.
http://www.msdpowersports.com/spark_plug_wires.html
I stand corrected - how easy would it be to mess up a boot installation on it, though? :dunno:
I was thinking of a possible install mistake when using the screw-on type boots that were discussed earlier in this thread.
mmm looks like i need to find some crimp on ones then.
what amp hour batterys are you guys running?
cheers