Spark plug wires
Road Master
Joined: Jun 2008
Posts: 789
Likes: 2
From: Battle Creek, MI
an expansion on this question... why do the catalogs and manufacturers claim there is such a HP gain to be had from just plug wires? I have seen claims in excess of 12hp just by changing plug wires.
what gives? (beyond the usual marketing hype) Are the plug wires from the moco really that bad?
what gives? (beyond the usual marketing hype) Are the plug wires from the moco really that bad?
Road Warrior
Joined: Dec 2005
Posts: 1,950
Likes: 2
From: Colorado Springs, CO
For electronic ignition, 7mm is standard. 8mm just gives you a little more insulation.
Cables are like the coil and plugs. You get as much spark energy as you need. And no more. For a stock bike, there's absolutly no advantage to bigger cables or coils. No power to be made there. If you have a built engine with high cylinder pressures - FI, NO, etc - then you might need all that extra power to make a good spark.
Cables are like the coil and plugs. You get as much spark energy as you need. And no more. For a stock bike, there's absolutly no advantage to bigger cables or coils. No power to be made there. If you have a built engine with high cylinder pressures - FI, NO, etc - then you might need all that extra power to make a good spark.
Tourer
Joined: Aug 2008
Posts: 385
Likes: 0
From: Diamond bar, California
on a side note, the modern HD has a very good ignition coil and it offer lots of spark energy to the plug IF the wires are in satisfactory condtion.
the Hi energy coils are hard on cables and being always exposed to the elements I recomend replacing them every 2 to 3 years for best perfmance.
for an alternitve sparkplug cable see: Magnecor.com
the Hi energy coils are hard on cables and being always exposed to the elements I recomend replacing them every 2 to 3 years for best perfmance.
for an alternitve sparkplug cable see: Magnecor.com
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