Ex-500.com - The home of the Kawasaki EX500 / Ninja 500R banner

1 - 20 of 28 Posts

·
Registered
Joined
·
5 Posts
Discussion Starter #1
good post, however, do you have any conclusive proof that a non "R" (resistor) plug is actually better than an "R" plug? I would think the difference would be quite minute.
 

·
Registered
Joined
·
270 Posts
What is the normal resistance for the ex's coils?
 

·
Registered
Joined
·
12,314 Posts
i assume you mean the ignition coil and not the pickup coil (i also know that when you assume you make an ASS of U and ME)

ignition coils:

A models:

primary: 2.2 - 3.9 ohms
secondary: 10-16 K-ohms

D and ER models

primary: 2.2 - 3.5 ohms
secondary: 12-18 K-ohms
 

·
Registered
Joined
·
867 Posts
Are there hotter compatible coils that can be used with the ex?
 

·
Registered
Joined
·
19,348 Posts
Bance said:
That was a good Dummies Guide to Sparkplugs Intro which was well written ,informative and concise. Thanks.
Holy Cow! Somebody actually read it. Congratulations

FOG
 

·
Registered
Joined
·
2,114 Posts
Bance said:
That was a good Dummies Guide to Sparkplugs Intro which was well written ,informative and concise. Thanks.
hhhmmm i dont get it


jk :) nice guide though
 

·
Registered
Joined
·
255 Posts
Awesome write-up, but is there anything we can do to improve the ignition system? Different coils, wires, fine-wire platinum tipped plugs?
 

·
Registered
Joined
·
19,348 Posts
Yep all of them.

FOG
 

·
Registered
Joined
·
6,106 Posts
Just wanted to clarify a few points.

1)While current flows from a positive to negative electrical potential, electrons flow from a negative (ground) to positive potential.
2)Current is like the volume of water flowing through a garden hose, think gallons per minute. Voltage is like the water presure in that hose, think pounds per square inch. When you put your thumb over the end of the hose to shoot a stream of water further, you are increasing the pressure while reducing the rate of water flow. This is what the coil does, it acts like a transformer increasing the voltage but reducing the current. The high voltage allows the spark to jump the gap at the plug, 12 volts is not enough.

http://en.wikipedia.org/wiki/Ignition_system
 

·
Registered
Joined
·
1,107 Posts
Awesome write-up, FOG. Cleared up a lot of the muddy thinking about spark plugs that I've picked up over the years.
 

·
Registered
Joined
·
592 Posts
Definitely learned something here, good write up.

The whole radio interference thing reminds me of a time I was at my dad's small engine shop. I think it was a blower he was running, and he walked outside with it to adjust the carb. He has a radio where I was sitting that is tuned into the airport's (Right across the steet) frequency. I noticed I was hearing the blower from a odd direction, only to find out I was hearing the motor running through the radio. (I'm not really sure if that is relevant, just thought it was cool).
 

·
Registered
Joined
·
17 Posts
FloridaEX500 said:
Use the dr9eix or the dr8eix, one is hotter than the other, use the tutorial to determine which is best for your particular needs.

Florida uses the dr9eix on his previous race engine on his gen 1 ex. They work great.
I read it, FOG. But I also read elsewhere, Florida, not to use resistor plugs and the ix are iridium which are resistor plugs. 5k resistance average.
 

·
Registered
Joined
·
165 Posts
Whoops, missed that part - I've recently installed "dr8eix", but will replace them with resistor-less ones when I replace my o-rings on the coolant lines and clean out the caps and drain holes.
 
1 - 20 of 28 Posts
Top