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coil_over_plugs_mod [2010/05/18 09:14]
127.0.0.1
coil_over_plugs_mod [2010/05/18 09:23] (current)
127.0.0.1
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-There may be more but basically you are looking for something like this:+There may be more but basically you are looking for something like this:-
  
-----+{{:c-o-p-1.jpg|}}
  
  
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 Those setups come up on ebay all the time and I scored a set of F4 coils w/ harness for about $20+shipping. Those setups come up on ebay all the time and I scored a set of F4 coils w/ harness for about $20+shipping.
  
-A few more notes about the parts, I tested the primary resistance of the stock coils to be about 4.2ohms. The CBR coils come in at 3.0-3.3 ohms. Ideally you would want half of the resistance of the single stock coil, since you are replacing it with two coils. So, if you're feeling ambitious and want to try another set of COP coils, make sure the primary resistance is roughly half of one of the stock coils. +A few more notes about the parts, I tested the **primary resistance of the stock coils to be about 4.2ohms.**  
 +The CBR coils come in at 3.0-3.3 ohms. Ideally you would want half of the resistance of the single stock coil, since you are replacing it with two coils. So, if you're feeling ambitious and want to try another set of COP coils, ​//make sure the primary resistance is roughly half of one of the stock coils. 
 +//
 Other parts needed: Other parts needed:
 solder solder
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 Ok, now before you throw those boat anchors that Yamaha used as coils into the trash, clip off the connectors and remove the bracket. You will need these to make your custom coil harness. Ok, now before you throw those boat anchors that Yamaha used as coils into the trash, clip off the connectors and remove the bracket. You will need these to make your custom coil harness.
  
-Grab the Honda coil harness and start by ripping apart all the tape and sheathing that comes in it. You're pretty much only interested in the plugs that go to the COP sticks, but leave as much wire as you can on each one.+Grab the Honda coil harness and start by ripping apart all the tape and sheathing that comes in it. You're pretty much only interested in the plugs that go to the C-O-P sticks, but leave as much wire as you can on each one.
  
 Making the harness Making the harness
  
 The next steps walk you through how to create a harness that will do this: The next steps walk you through how to create a harness that will do this:
-Image+ 
 +{{:​c-o-p-2.jpg|}}
  
 Lay out the plugs for the coils that will go between cylinders 1 and 4 and cut one of the black wires to length so that it will join up with one of the non-black wires on the other connector. In other words, you are joining the negative side of one coil to the positive side of the other coil. Solder and heatshrink the connection between those two wires. Lay out the plugs for the coils that will go between cylinders 1 and 4 and cut one of the black wires to length so that it will join up with one of the non-black wires on the other connector. In other words, you are joining the negative side of one coil to the positive side of the other coil. Solder and heatshrink the connection between those two wires.
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 Here is a picture of the connection between two of the coils (positive side to negative side): Here is a picture of the connection between two of the coils (positive side to negative side):
-Image+{{:​c-o-p-3.jpg|}}
  
 Take the remaining non-black wire and solder it to the red with white stripe wire on the (orange) harness. Don't forget to put the heat shrink on before you solder the wires! Take the remaining non-black wire and solder it to the red with white stripe wire on the (orange) harness. Don't forget to put the heat shrink on before you solder the wires!
  
 Now you should have something that looks like this: Now you should have something that looks like this:
-Image+{{:​c-o-p-4.jpg|}}
  
 Repeat what you just did but this time for cylinders 2 and 3. The only difference will be less wire between the coil connectors (since they are physically closer), and instead of connecting to an orange wire, you will now be connecting the black wire to a gray wire. Repeat what you just did but this time for cylinders 2 and 3. The only difference will be less wire between the coil connectors (since they are physically closer), and instead of connecting to an orange wire, you will now be connecting the black wire to a gray wire.
  
 When you finish that you should have something that looks like this: When you finish that you should have something that looks like this:
-Image+{{:​c-o-p-5.jpg|}}
  
 Note that the yellow harness plug goes to cylinders 1 and 4 while the white harness plug goes to cylinders 2 and 3. Note that the yellow harness plug goes to cylinders 1 and 4 while the white harness plug goes to cylinders 2 and 3.
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 This picture illustrates what I'm talking about with the fan: This picture illustrates what I'm talking about with the fan:
-Image+{{:​c-o-p-6.jpg|}}
  
 Plug in your harness to the coils and feed it up through the splash guard. Connect the harness to the corresponding connectors where the old coils used to connect. Plug in your harness to the coils and feed it up through the splash guard. Connect the harness to the corresponding connectors where the old coils used to connect.
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 Here is a picture of the old coil mounting points. Here is a picture of the old coil mounting points.
-Image+{{:​c-o-p-7.jpg|}}
  
 And this is how the coils look installed: And this is how the coils look installed:
-Image+ 
 +{{:​c-o-p-8.jpg|}}
  
 Put everything back together and go for a ride! Put everything back together and go for a ride!
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 I did this mod because I'm hoping to cure a rain cut-out problem. I have not yet driven in the rain with this mod yet, but in the dry it rides exactly as it did before. I did this mod because I'm hoping to cure a rain cut-out problem. I have not yet driven in the rain with this mod yet, but in the dry it rides exactly as it did before.
  
-Disclaimer: I can not say what this mod will do to the transistors inside the TCI box in the long run. This mod could possibly reduce the life of the transistors. MOD AT YOUR OWN RISK!+==== Disclaimer: ​==== 
 + I can not say what this mod will do to the transistors inside the TCI box in the long run. This mod could possibly reduce the life of the transistors. MOD AT YOUR OWN RISK!
coil_over_plugs_mod.txt · Last modified: 2010/05/18 09:23 by 127.0.0.1