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Offline Grebnaws

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Dyna 5 ohm coils
« on: July 28, 2011, 11:13:55 PM »
The stock coils on my cb500 check okay but the wires and plug caps are mismatched and hacked. If I purchase Dyna 5 ohm coils for my cb500 will I need to purchase separate resistor plug caps, or will the plug caps provided in the standard 7mm copper core wire work?

I searched here and read that the coils will not work without some minor modifications to the coil mounts but it shouldn't pose a problem.

I am making an order list for z1 enterprises and need to know if these parts will work for my application.

http://www.z1enterprises.com/Dyna-Dual-Output-50-Ohm-Coils-pair-DC81-1307.aspx

http://www.z1enterprises.com/Dyna-Ignition-Wires--7mm-copper-core-black-208.aspx

There are cheaper Dyna DC7-1 coils on ebay. Will they work for the same applications as the DC8-1 coils sold at Z1?

Also, the NGK resistor plug caps sold at Z1 do not state their resistance. Does anyone know what resistance they have and how it compares to stock plug caps for this model?



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Offline Bodi

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Re: Dyna 5 ohm coils
« Reply #1 on: July 29, 2011, 04:14:52 AM »
The stock plug caps will fit on the Dyna wire sets (the coils do not come with cables, you can buy the Dyna set or just get wire somewhere but you'll also need the coil connectors). I would get new caps though, their resistors fade with age and use. The Z1 caps are probably 10K but maybe 5K, call them and ask if you need to be certain. They work, anyway. I've noticed that the 10K ones are readily available but 5K or 0K are difficult to find at aftermarket suppliers.
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Offline Kong

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Re: Dyna 5 ohm coils
« Reply #2 on: July 29, 2011, 04:57:33 AM »
Unless you've got some other and additional electrical draw on the bike, something like a CD player or heated grips (I dunno, people put all sorts of odd things on bikes) you shouldn't need any more resistance in the ignition system.  The alternator should be able to handle the green coils even with metal wires and straight caps.  As to the modification needed to the coil mount.  You don't really need to do it, but if you want to the fix takes all of 2 minutes with a flat file and what you have to do is obvious when you try to mount the coils in the stock mount.
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bollingball

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Re: Dyna 5 ohm coils
« Reply #3 on: July 29, 2011, 05:03:34 AM »
Got mine from denniskirk they measured correctly. Maybe cross reference part number or contact Z1 they should have them.

http://www.denniskirk.com/jsp/product_catalog/Product.jsp?skuId=20305&utm_source=google&utm_medium=cse


                      Ken
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Offline WarwickE36

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Re: Dyna 5 ohm coils
« Reply #4 on: July 29, 2011, 05:19:20 AM »
Im no expert but I put Dyna 5 Ohm coils in my bike last month.  I got the Dyna wires to go with it.  I ran it with no caps with D7EA plugs, and recently switched to a resistor plug.  I didn't notice any difference in performance.
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" Why does anyone get offended by what someone does to their own bike? I dont get it. "

You made me think about it after I cheered knowing someone else would like to know what these control freaks are up to.
 Every time any owner strips whatever precious Honda part the horrified purists parts go up in value. That's not the part that bothers them.
 What bothers them is they sat up late at night, their breast full of wonder and estrogen, unable to sleep, dreaming about their lovely darling and all her glory... and next thing you know someone else doesn't share their emotional deluge and their reaction is they must spread their mind museum as far as they possibly can, taking over as much of the real world as possible.

Drink fast, drive slow, but ride it like you stole it

1974 Cb550 with style
2004 SV650s

bollingball

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Re: Dyna 5 ohm coils
« Reply #5 on: July 29, 2011, 05:43:50 AM »
OK Warwick I got to ask how did you hook up the wires with NO caps :o
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Offline WarwickE36

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Re: Dyna 5 ohm coils
« Reply #6 on: July 29, 2011, 07:15:38 AM »
The Dyna wire are like automotive wires, you cut them to length and attach at the coils, but the plug side is already pre-made and ready to attach to the plugs.  You just need the little round piece that screws on to the top of the plug itself.  This is awesome because unlike traditional coils+wires you can swap wires whenever you want without splicing.
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" Why does anyone get offended by what someone does to their own bike? I dont get it. "

You made me think about it after I cheered knowing someone else would like to know what these control freaks are up to.
 Every time any owner strips whatever precious Honda part the horrified purists parts go up in value. That's not the part that bothers them.
 What bothers them is they sat up late at night, their breast full of wonder and estrogen, unable to sleep, dreaming about their lovely darling and all her glory... and next thing you know someone else doesn't share their emotional deluge and their reaction is they must spread their mind museum as far as they possibly can, taking over as much of the real world as possible.

Drink fast, drive slow, but ride it like you stole it

1974 Cb550 with style
2004 SV650s

Offline CB500_k2

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Re: Dyna 5 ohm coils
« Reply #7 on: July 29, 2011, 08:31:33 AM »
Not long ago I replaced the 3 ohm coils on my 500 with Dyna 5 ohm coils.  The 3 ohm units drew too much current for the marginal 500 electrics and I felt that the series resistors used to limit current draw were not doing anything good for the ignition.  I got Dyna wires with no cap resistors.  I must say the the configuration works great with, do I dare say it, my Denso iridium plugs.
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bollingball

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Re: Dyna 5 ohm coils
« Reply #8 on: July 29, 2011, 09:17:23 AM »
War: So you did use caps. ;D
« Last Edit: July 29, 2011, 09:25:47 AM by bollingball »
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Offline Duanob

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Re: Dyna 5 ohm coils
« Reply #9 on: July 29, 2011, 09:48:43 AM »
Dyna 5ohm coils, NGK 5Kohm caps, NGK D7EA plugs, NAPA 7mm copper core wire by the bulk. Runs like a bat outta hell with perfetly tuned carbs.
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"Just because you flush a boatload of money down the toilet, doesn't make the toilet worth more",  My Stepfather the Unknown Poet

1974 CB360T
1976 CB550K2 Resurrected
1976 CB550F2 Barn Find
1979 CX500 VG "HONDA-GUZZI"
2007 Moto Guzzi Breva 750ie
2015 BMW F700GS
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Offline WarwickE36

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Re: Dyna 5 ohm coils
« Reply #10 on: July 29, 2011, 10:01:58 AM »
Quote
War: So you did use caps. ;D

Nope. I didn't

What I meant is the D7EA plugs dont come with the terminal piece on top.  They are just threads. 


Just threads won't work with DYNA wires.  You need the terminal.

Just threads looks like this.
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" Why does anyone get offended by what someone does to their own bike? I dont get it. "

You made me think about it after I cheered knowing someone else would like to know what these control freaks are up to.
 Every time any owner strips whatever precious Honda part the horrified purists parts go up in value. That's not the part that bothers them.
 What bothers them is they sat up late at night, their breast full of wonder and estrogen, unable to sleep, dreaming about their lovely darling and all her glory... and next thing you know someone else doesn't share their emotional deluge and their reaction is they must spread their mind museum as far as they possibly can, taking over as much of the real world as possible.

Drink fast, drive slow, but ride it like you stole it

1974 Cb550 with style
2004 SV650s

bollingball

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Re: Dyna 5 ohm coils
« Reply #11 on: July 29, 2011, 10:25:57 AM »
War The caps are pre made on the wire but they are still caps.
I understand about the plugs. I have the same wires I cut the caps that come with them off and used NGK caps without some kind of cap you would have to twist the bare wire around the plug ;)
« Last Edit: July 29, 2011, 10:27:34 AM by bollingball »
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Offline WarwickE36

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Re: Dyna 5 ohm coils
« Reply #12 on: July 30, 2011, 07:26:02 AM »
The caps that come on the wires I got are not resister caps, nor do they twist on and off. I think we're talking in circles here so nevermind.
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" Why does anyone get offended by what someone does to their own bike? I dont get it. "

You made me think about it after I cheered knowing someone else would like to know what these control freaks are up to.
 Every time any owner strips whatever precious Honda part the horrified purists parts go up in value. That's not the part that bothers them.
 What bothers them is they sat up late at night, their breast full of wonder and estrogen, unable to sleep, dreaming about their lovely darling and all her glory... and next thing you know someone else doesn't share their emotional deluge and their reaction is they must spread their mind museum as far as they possibly can, taking over as much of the real world as possible.

Drink fast, drive slow, but ride it like you stole it

1974 Cb550 with style
2004 SV650s

Offline Skunk Stripe

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Re: Dyna 5 ohm coils
« Reply #13 on: July 30, 2011, 08:15:48 AM »
The wires terminate in a round clip which could be called a cap, even though they do not cover anything on the plug itself. That is what the others are talking about and you. ;)
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bollingball

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Re: Dyna 5 ohm coils
« Reply #14 on: July 30, 2011, 09:03:22 AM »
War It was all meant in fun no big deal.  :) I just  thought if a noob read the post he/she needed to understand you need some sort of a cap either premaid or added on like a NGK or Honda stock one. All is good. My humble apologies if I offended.

Lord knows I make a lot of mistakes and welcome correction so I can learn.

              Ken
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orange550

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Re: Dyna 5 ohm coils
« Reply #15 on: August 22, 2011, 05:43:53 PM »
Quote from: WarwickE36 on July 30, 2011, 07:26:02 AM
The caps that come on the wires I got are not resister caps, nor do they twist on and off. I think we're talking in circles here so nevermind.

I just ordered 5ohms Dyna coils and the Dyna 7mm copper wire set for Z1. So the "built in" caps are non-resistor? I sent an email to Dyna to confirm but never heard back.

I was going to use the "R" NGK DR7EA (I understand that NGK replaced the DR7ES with the "A") I read that the "R" has 5ohms of resistance. I also think I understand that the original Honda specs was 10ohms resistor plug caps and non-resistor plugs... my set-up will only get me to 5ohms resistance.

BTW - I sort of like the idea of using the Dyna coil wires with the built in plug caps. I dug around and found 4 plug screw tops to with with them.

I assume your bike is running fine with just 5ohms of resistance at the plug? With points or with Dyna ignition module as well?

Thanks!
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Offline CoachDoc

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Re: Dyna 5 ohm coils
« Reply #16 on: August 22, 2011, 06:22:23 PM »
I just installed the Dyna 5 coils on my 550. No mods. needed. I used their 7mm. leads, but I cut off the built in caps and used new NGK 5 ohm caps as per HondaMan's advice. I did use their coil connectors. Contrary to another post, the 5K caps are readily available, but the 10K's seem to be a thing of the past. No problem since the 5K caps work great.
Last thing I'm gonna do to the ignition is install the Hondaman transisitorized system, which I've heard great things about.
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orange550

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Re: Dyna 5 ohm coils
« Reply #17 on: August 22, 2011, 06:32:09 PM »
Quote from: CoachDoc on August 22, 2011, 06:22:23 PM
I just installed the Dyna 5 coils on my 550. No mods. needed. I used their 7mm. leads, but I cut off the built in caps and used new NGK 5 ohm caps as per HondaMan's advice. I did use their coil connectors. Contrary to another post, the 5K caps are readily available, but the 10K's seem to be a thing of the past. No problem since the 5K caps work great.
Last thing I'm gonna do to the ignition is install the Hondaman transisitorized system, which I've heard great things about.

Did you use resistor plugs as well?
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Offline WarwickE36

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Re: Dyna 5 ohm coils
« Reply #18 on: August 23, 2011, 08:34:20 AM »
I have done it both ways, with resistor plugs (as it is now) and without.  I find a better spark WITH the resistor plugs, although I couldn't notice a difference in running of the bike.  I pulled a plug wire, put a plug in the plug wire end, and grounded it with a jumper setup, then triggered the coil.  I repeated for a non resistor plug.  The resistor plug had a brighter spark.  So I kept those in the bike.
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" Why does anyone get offended by what someone does to their own bike? I dont get it. "

You made me think about it after I cheered knowing someone else would like to know what these control freaks are up to.
 Every time any owner strips whatever precious Honda part the horrified purists parts go up in value. That's not the part that bothers them.
 What bothers them is they sat up late at night, their breast full of wonder and estrogen, unable to sleep, dreaming about their lovely darling and all her glory... and next thing you know someone else doesn't share their emotional deluge and their reaction is they must spread their mind museum as far as they possibly can, taking over as much of the real world as possible.

Drink fast, drive slow, but ride it like you stole it

1974 Cb550 with style
2004 SV650s

bollingball

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Re: Dyna 5 ohm coils
« Reply #19 on: August 23, 2011, 09:09:28 AM »
 Warwick I wonder if you had a better spark with the resistor plugs because of the non-resistor premade caps you put on a while back? Looks can be deceiving depending on how good the plug is grounded. maybe TT or some one knows how this could be measured. I have a adj. spark gap tester but it still relies on a good grd. and a good eye. I don't have good eyes any more :(
  I ran with non resistor cap and plug and didn't notice bad running
but read you need the load because of a current issue.

Orange 5K caps are are the norm for NGK it is the 10K that is hard to find HondaMan says the 10K were only used the first few years. I got my 5Ks from Dinnis Kirk NGK just don't use both from what I hear.
 Maybe HondaMan or TT can say again why this load is necessary.
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Offline WarwickE36

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Re: Dyna 5 ohm coils
« Reply #20 on: August 23, 2011, 11:04:55 AM »
Quote from: bollingball on August 23, 2011, 09:09:28 AM
Warwick I wonder if you had a better spark with the resistor plugs because of the non-resistor premade caps you put on a while back? Looks can be deceiving depending on how good the plug is grounded. maybe TT or some one knows how this could be measured. I have a adj. spark gap tester but it still relies on a good grd. and a good eye. I don't have good eyes any more :(
  I ran with non resistor cap and plug and didn't notice bad running
but read you need the load because of a current issue.

Orange 5K caps are are the norm for NGK it is the 10K that is hard to find HondaMan says the 10K were only used the first few years. I got my 5Ks from Dinnis Kirk NGK just don't use both from what I hear.

I thought that was the question. Whether or not to run resistor plugs with Dyna Coils + Wires.  I don't really see anyone using resistor caps with Dyna Coils.  Although, I suppose that setup would be possible, it seems like a lot of extra parts to me.
« Last Edit: August 25, 2011, 05:21:25 AM by WarwickE36 »
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" Why does anyone get offended by what someone does to their own bike? I dont get it. "

You made me think about it after I cheered knowing someone else would like to know what these control freaks are up to.
 Every time any owner strips whatever precious Honda part the horrified purists parts go up in value. That's not the part that bothers them.
 What bothers them is they sat up late at night, their breast full of wonder and estrogen, unable to sleep, dreaming about their lovely darling and all her glory... and next thing you know someone else doesn't share their emotional deluge and their reaction is they must spread their mind museum as far as they possibly can, taking over as much of the real world as possible.

Drink fast, drive slow, but ride it like you stole it

1974 Cb550 with style
2004 SV650s

Offline CoachDoc

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Re: Dyna 5 ohm coils
« Reply #21 on: August 23, 2011, 11:07:29 AM »
Quote from: orange550 on August 22, 2011, 06:32:09 PM
Quote from: CoachDoc on August 22, 2011, 06:22:23 PM
I just installed the Dyna 5 coils on my 550. No mods. needed. I used their 7mm. leads, but I cut off the built in caps and used new NGK 5 ohm caps as per HondaMan's advice. I did use their coil connectors. Contrary to another post, the 5K caps are readily available, but the 10K's seem to be a thing of the past. No problem since the 5K caps work great.
Last thing I'm gonna do to the ignition is install the Hondaman transisitorized system, which I've heard great things about.

Did you use resistor plugs as well?

Did NOT use resistor plugs with the resistor caps. This I picked up from reading Hondaman's posts on the subject. Using resistor plugs with resistor caps puts too much resistance in the circuit and will degrade performance.
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Offline Duanob

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Re: Dyna 5 ohm coils
« Reply #22 on: August 24, 2011, 12:44:31 PM »
Quote from: WarwickE36 on August 23, 2011, 11:04:55 AM

I thought that was the question. Whether or not to run resistor plugs with Dyna Coils + Wires.  I don't really see anyone using resistor caps with Dyna Coils.  Although, I suppose that setup would be possible, it seems like a lot of extra parts to me.
 Maybe HondaMan or TT can say again why this load is necessary.

I did. NGK 5Kohm caps and no resisitor NGK plugs. Copper core wire directly to the Dyna coils.
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"Just because you flush a boatload of money down the toilet, doesn't make the toilet worth more",  My Stepfather the Unknown Poet

1974 CB360T
1976 CB550K2 Resurrected
1976 CB550F2 Barn Find
1979 CX500 VG "HONDA-GUZZI"
2007 Moto Guzzi Breva 750ie
2015 BMW F700GS
Another 1976 CB550K Cafe?

  __o
_- \_<,
(*) /' (*)

Offline CoachDoc

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Re: Dyna 5 ohm coils
« Reply #23 on: August 24, 2011, 10:36:38 PM »
Quote from: Duanob on August 24, 2011, 12:44:31 PM
Quote from: WarwickE36 on August 23, 2011, 11:04:55 AM

I thought that was the question. Whether or not to run resistor plugs with Dyna Coils + Wires.  I don't really see anyone using resistor caps with Dyna Coils.  Although, I suppose that setup would be possible, it seems like a lot of extra parts to me.
 Maybe HondaMan or TT can say again why this load is necessary.

I did. NGK 5Kohm caps and no resisitor NGK plugs. Copper core wire directly to the Dyna coils.

I have that exact same setup now. Might add I like the Dyna copper core wires.
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Offline Duanob

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Re: Dyna 5 ohm coils
« Reply #24 on: August 25, 2011, 11:16:58 AM »
I just went with NAPA 7mm bulk wire and cut to length. Works fine.
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"Just because you flush a boatload of money down the toilet, doesn't make the toilet worth more",  My Stepfather the Unknown Poet

1974 CB360T
1976 CB550K2 Resurrected
1976 CB550F2 Barn Find
1979 CX500 VG "HONDA-GUZZI"
2007 Moto Guzzi Breva 750ie
2015 BMW F700GS
Another 1976 CB550K Cafe?

  __o
_- \_<,
(*) /' (*)
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