[hogsnhondas]

Anyone out there using Dyna Coils on a 68-72 CB350 twin? I have a couple I am considering using, but am unsure if it is worth the effort. Also confused on which post the stock yellow/ blue wires go and the black power feeds. I have the instruction manual, but obviously not for this bike.

Anyone?

 

[Mc69]

Definitely worth it in my opinion. I run the dyna wires with mine too. If I remember correctly, yellow is on the left and blue on the right. Should be hookups on the coils themselves,,,small threaded screw holes on the back of the coils for the wires. Getcha a dyna ignition booster while you are at it,,,makes the bike run awesome!

 

[Mc69]

Definitely worth it in my opinion. I run the dyna wires with mine too. If I remember correctly, yellow is on the left and blue on the right. Should be hookups on the coils themselves,,,small threaded screw holes on the back of the coils for the wires. Getcha a dyna ignition booster while you are at it,,,makes the bike run awesome!

 

[hogsnhondas]

Color (yellow/ blue) go to + terminal?

 

[hogsnhondas]

Color (yellow/ blue) go to + terminal?

 

[zombiehunter]

are these Dyna coils any more (or less) taxing on the electrical system?

 

[Mc69]

I haven't had any problems nor have I heard of anyone else having problems, I run a gell cell too. Yellow=left cylinder and blue=right...I think,,, pretty sure without seeing a manual. Get a manual if you don't have one. Plenty of places to download them. Just follow the wiring diagrams.

 

[zombiehunter]

So, which Dyna coil would be the correct one for '73 CB350G - the DC3-1?

Also, just wondering where a good place to mount the ignition booster that Mc69 is talking about.

Thanks.

 

[Hamburg]

I've heard great things about the Dyna coils as well.. Wouldn't it help to have an electronic ignition with those coils? Does Dyna make one for the Honda twins?

 

[krapfever]

Dyna's work just fine with points. Don't worry too much about wiring them properly left/right. When you go to fire it up, if it won't start or backfires, just switch the plug wires. The 350 uses a "wasted spark" ignition so you never really can get much more than 180 degrees out (unless you've messed with the points plate at the same time).

Oh, and make sure you install a good set of plug wires while you're at it.

 

[coreyjdl]

i am a little confused about how the dynas work. do i just need ONE dual output to replace the TWO coils on my machine? 1981 xs400?

 

[krapfever]

If you have a twin with a 180 degree crank, you'll need two single output coils. If you have a twin with a 360 degree crank, you only need one dual output coil.

 

[coreyjdl]

180 degree twin, no waste spark then?

 

[zombiehunter]

Ok, one last question. Will installing these be a pain in the ass? I've read other threads about having to bang our recesses in the tank in order for them to fit, but wasn't sure if that was referring to this application specifically i.e. DC3-1's on a CB350G.

 

[HackAsaw]

to answer that question directly....

Dyna's coils are not magic nor do they defy any laws governing electricity

4-5 ohm coils work fine with points and their current draw will be right in line with stock stuff.... so will their output

3 ohm coils will have points not living very long without an amplifier of some sort and will indeed draw more current than typical stock points coils

1.5 ohm coils will fry a set of points within seconds and you better use a big primary wire going to it while not expecting antique charging systems to be able to keep up

and this matters not whose name is on the coil

Correct Corey.... with a 180 crank you cannot do the dual output coil and waste spark

the truth be known, single fire even with a 360 degree crank results in easier starting and slightly better performance in most all cases but especially so for HD's with it's 315/405 stagger

quote:Originally posted by zombiehunter

are these Dyna coils any more (or less) taxing on the electrical system?

 

[HackAsaw]

quote:Originally posted by HackAsaw

to answer that question directly....

Dyna's coils are not magic nor do they defy any laws governing electricity

They are quality made and very reliable

4-5 ohm coils work fine with points and their current draw will be right in line with stock stuff.... so will their secondary output as well primary consumption

3 ohm coils will have points not living very long without an amplifier of some sort and will indeed draw more current than typical stock points coils and also higher secondary output/energy avialable

1.5 ohm coils will fry a set of points within seconds and you better use a big primary wire going to it while not expecting antique charging systems to be able to keep up... these will jump a huge gap and stop your heart

there are also less than 1 ohm ignition coils available and they should be handled with much care

and this matters not whose name is on the coil

Correct Corey.... with a 180 crank you cannot do the dual output coil and waste spark

the truth be known, single fire even with a 360 degree crank results in easier starting and slightly better performance in most all cases but especially so for HD's with it's 315/405 stagger

quote:Originally posted by zombiehunter

are these Dyna coils any more (or less) taxing on the electrical system?

 

[krapfever]

Easiest mount of Dynas on a 350 I've seen involves simply removing the stock coils and bracket and securing the new Dynas to the frame with a pair of big ass hose clamps. Simple, cheap, effective and it all fit under a stock '69 tank with little or no bending of sheetmetal underneath.

You'll have to run a couple of good ground wires to each coil, too.

 

[zombiehunter]

cool, thanks Krapfever.

I think I'll try the 5ohm ones per Hack's post.