TOPIC:

My bike has the nology 3 ohm coils. I'm in the process of replacing all the boots and wire since they are awful shape. Does the KZ1300 still require the resistor caps? I'm using the resistor plugs.

Hi.
Do you mean plug caps? or spark plugs? I use standard plug caps and NGK BP6ES spark plugs.
Take a look at the FAQ section on the forum as very good for tech issues.

Plug caps. I'm using the BPR6ES plugs which also have a resistor.

I wish that TrikeBldr would chime in on this. He is the "Subject Matter Expert " on this topic.

The stock wires on this bike was a solid steel core wire. The standard spark plug caps (ends) were resistor caps with a 4K ohm resistor in the cap. Then the sparkplug standard was a BPR6ES which is a resistor plug. The resistor cap helped reduce the radio frequency interference. Carbon core wires also have the same effect and typically carbon core wires come with a solid wire end (no resistance). We need a certain amount of resistance to restrain the radio frequency interference but too much will suck up the available energy going to the plugs.

There are lots of members out there who have
changed the coils
changed the wires
changed the caps and
changed the plugs and
any combination thereof.

I feel we've "lost "the standard. Without a standard to measure to we're all talking nonsense here.

The BPR6ES plug has a 5K ohm resistor built in to the plug. The service manual calls for a BP6ES non resistor plug EXCEPT for European and Canadian models and that standard is the BPR6ES resistor plug.

The original spark plug cap has a 4K ohm resistor built in to it.

So why did Kawasaki call for 2 different standards? Is it an availability issue with plugs or a licensing requirement to meet radio frequency issues? Don't know.

To answer the original question, I think if you maintain a total resistance of 4K ohm resistance in the wire and cap you'll be fine and your choice of either the BP6ES or the BPR6ES plug will be fine BUT consider going to a double platinum tipped plug to compensate for the unusual wear of the sparkplugs in a waste spark system. The NGK "Laser Platinum "plugs would be the ultimate but I haven't done the research here to get the spark plug number.

Thanks Kawboy.

I got into the FAQ late into the morning and read a bunch on exactly what you are talking about. For my next plug change I'll try a double platinum for the issue both mentioned.