Topic: What Plugs To Use With Dyna-S System?

[supersport_CB400F]

What plugs work best with the Dyna electronic ignition and coils with copper wires?...any suggestions would be helpful…cheers

[cbjunkie]

good question. i just completed the DynaS swap out - coils and ignition - but did not think it was necessary  to change plugs out...?

[TwoTired]

You'd use the same heat range plugs.  If you use 5 ohm coils use the stock gap.  3 ohm coils can use an increased gap.  Increase by about 0.005 inch.

Cheers,

[MRieck]

Iridiums are very nice but expensive.

[supersport_CB400F]

Iridiums are very nice but expensive.

#$%* they are I've not got a race engine so I'm going for stock plugs  NGK DR8ESL with a bigger gap or should I use another temp plug 3Ω Dyna coil?.......cheers

[jbailey]

I got NGK iridiums for about $8 each.  That's $32 for 4, so it's up to you if it's worth the money.  They are cheaper than Denso iridiums.  Would I buy them again?  Probably not.  I would probably go for platinums since they are usually about $2 each and not much more than standard plugs.  I use them in all my cars.  I'm not sure if they are available for our old bikes.  The NGK website only shows standard and iridium.

[HondaMan]

The DR8ESL should be fine. If you have resistor caps, use the D8ESL instead.
Or, use the Denso X24ES-U, if you can find them.

I used the following plugs on my K2 over the years (resistor caps) under all sorts of conditions:

Cold weather/short-haul/strictly city riding: D7ES, X22ES-U
Mixed hiway/city, summertime driving: D8ES-L, X24ES-U.
Long-distance touring: D8ES, X24ES.
Racing: D9ES, (no longer available, D10ES often too cold), X27ES-U.

I am just venturing into the Dyna III myself. The higher voltage and wider plug gaps should help keep the plugs cleaner longer and idle better. Hopefully, better enough to allow a little richer mixture, which increases midrange torque considerably on the CB750.

[MRieck]

If people stepped into the 90's and got digital ignitions you'd see what I mean (with Iridiums).

[supersport_CB400F]

I got NGK iridiums for about $8 each.  That's $32 for 4, so it's up to you if it's worth the money.  They are cheaper than Denso iridiums.  Would I buy them again?  Probably not.  I would probably go for platinums since they are usually about $2 each and not much more than standard plugs.  I use them in all my cars.  I'm not sure if they are available for our old bikes.  The NGK website only shows standard and iridium.

They're about £13 each in the UK, standard are about £3

[supersport_CB400F]

good question. i just completed the DynaS swap out - coils and ignition - but did not think it was necessary  to change plugs out...?

Junkie, did you get the Dyna leads? If you did have they got resistor plug caps I never seen anything in the blurb….cheers

[cbjunkie]

yeah - i got the solid copper wires that Jeff recommended to me (jeff from z1)

the best thing about buying these wires is the connection to the coils - they are literally made for each other with a special clip and waterproofing boot that is very secure and goes together with a satisfying sucking click sound - no need for messy silicon sealer and all that hassle.

i'm using the NGK D8ES which is what i had on before

i do not believe that these have resistor caps...

http://www.z1enterprises.com/detail.aspx?ID=209

[supersport_CB400F]

yeah - i got the solid copper wires that Jeff recommended to me (jeff from z1)

the best thing about buying these wires is the connection to the coils - they are literally made for each other with a special clip and waterproofing boot that is very secure and goes together with a satisfying sucking click sound - no need for messy silicon sealer and all that hassle.

i'm using the NGK D8ES which is what i had on before

i do not believe that these have resistor caps...

http://www.z1enterprises.com/detail.aspx?ID=209

That's who I've ordered from.....but I'm not sure if they have resistor plug caps they must have if you use D8'S I have resistor caps on my old coils and used those...cheers

[cbjunkie]

sorry i'm not of more help - i'm afraid i'm not much of an electrician...in this case i just did what the knowledgeable told me to do... 

[supersport_CB400F]

sorry i'm not of more help - i'm afraid i'm not much of an electrician...in this case i just did what the knowledgeable told me to do... 

No worries Junkie, I’ll find out when they arrive 

[jbailey]

If people stepped into the 90's and got digital ignitions you'd see what I mean (with Iridiums).

I've got a Dyna S.  Is that what you mean by digital?  What do you mean with Iridiums?

[MRieck]

If people stepped into the 90S and got digital ignitions you'd see what I mean (with Iridium's).

I've got a Dyna S.  Is that what you mean by digital?  What do you mean with Iridium's?

A Dyna 2000 is digital. The ignition maps are handled electronically....no mechanical advance with their inherit limitations. I sent samcr750 a set of Iridium's for short money...even with postage. He says they work great in their drag CR.

[eldar]

The iridium is a high end plug. It has a smaller center electrode and has many other improvements over standard plugs and even platinum plugs, not to mention long life. On a stock bike, they can even take advantage of your weak coil ignition as they are more efficient at making a spark. they also have allowed racers to increase their CR and rpms on their race engines. There are things all over the net about them. Aside from cost, I dont know if they really have any current short comings.

Hondaman, I cant run slightly rich, makes my midrange bog out. Course I run a K8 and have an accel pump. that is probably where the difference comes in.

[78CB750F1]

With Dyna coils and wires, is the NGK Iridium DR8EIX the right plug?

[RSV12K]

I have Dyna coils/ignition and Accel graphite wires and I use DPR8EIX-9, which must be the same thing.

I don't recall the reason, but I have it in the back of my head those spark plugs did not come with the nipples on top, yet that was what the Accel connectors called for. It's been a while, but to be safe, check. I had to chase them down separately, but my memory is crappy.

[supersport_CB400F]

I have Dyna coils/ignition and Accel graphite wires and I use DPR8EIX-9, which must be the same thing.

I don't recall the reason, but I have it in the back of my head those spark plugs did not come with the nipples on top, yet that was what the Accel connectors called for. It's been a while, but to be safe, check. I had to chase them down separately, but my memory is crappy.

I'm using the copper wires do your graphite wires have resistance plug caps?

[supersport_CB400F]

With Dyna coils and wires, is the NGK Iridium DR8EIX the right plug?

What wires did you use? and what coilsl 3 or 5Ω... cheers

[78CB750F1]

I'm using the Dyna S ignition with 3.0 ohm coils and Dyna DW800 graphite suppression core wires.

[supersport_CB400F]

I'm using the Dyna S ignition with 3.0 ohm coils and Dyna DW800 graphite suppression core wires.

So your plug caps are non resistance type? I'm guessing those plugs are given the DR in the # of the plug is that correct.
I'm using the copper core wire but the information on the plug cap so I cant order the plugs in advance it's not a problem when they arrive I'll measure the resistance and get the plugs required...cheers

[Hop on a Honda]

I have had NGK  IRIDIUMS in my K5 for 18months and never tiughed them at all Goes first pop and goes hard Reccomend them.I also expext that there a leveler/ compensation for #$%* fuel so to speak
Dave

[cben750f0]

i bought a set of iridiums for my CBRF4i(they wont run anything else), and it costs $100 AUD!!!, i have a dyna and just runnin the D8ES... seems ok....peace  BTW the NGK's for the CB cost $12 AUD...big difference