Coils, what would you do?

  • nedrowjoe
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Coils, what would you do?

25 Apr 2013 00:43
#583896
I searched topic for close to an hour to try to find my answer, I didn't so I am posing this question. Is replacing coils a standard upgrade when trying to get my csr1000 in tip top shape? If using stock coils is it always a good idea to replace them? I can go through testing and kill myself with different testing methods, under stress or not under stress. Or, since I have a little extra money, should I just change them out for Dyna or accel? I hope to get into increasing performance some day. I have replaced the whole charging system, battery, stator, rectifier, checked and changed all bad connections. I believe I have a stock ignition, but from what I understand the aftermarket coils work with stock ignition. I am not so sure the stock coils are shot, but then again they are 32 years old, would you change them?

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  • jonarmstrong
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Re: Coils, what would you do?

25 Apr 2013 00:58
#583899
If you don't mind spending some money put new ones on. I hear the dynas give a better spark I'm sure other aftermarket ones do too. I'm running stock coils and as long as they don't fail under heated conditions they will stay until some other stuff is done. Ignition is always a good upgrade tho
82 Kz1000 gpz1100 cams dyna ignition kerker k&n

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  • bountyhunter
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Re: Coils, what would you do?

25 Apr 2013 04:31
#583921
nedrowjoe wrote: I searched topic for close to an hour to try to find my answer, I didn't so I am posing this question. Is replacing coils a standard upgrade when trying to get my csr1000 in tip top shape? If using stock coils is it always a good idea to replace them? I can go through testing and kill myself with different testing methods, under stress or not under stress. Or, since I have a little extra money, should I just change them out for Dyna or accel? I hope to get into increasing performance some day. I have replaced the whole charging system, battery, stator, rectifier, checked and changed all bad connections. I believe I have a stock ignition, but from what I understand the aftermarket coils work with stock ignition. I am not so sure the stock coils are shot, but then again they are 32 years old, would you change them?
beause of the grief my old coils gave me..... and the "good used" one I got that failed a few months after I installed it..... I am no longer a believer in running old coils. They don't wear well and run way too hot to have a long life.

Dyna and Accel make good coils (kind of pricey) but I am not a believer that the stock coils are inadequate. The "stock OEM" types are a lot cheaper and don't draw as much current as the lower resistance "high performance" coils. There's nothing magic about coils they are actually flyback transformers and that 'science" has been well known for many decades. If there was free horsepower to be had just by "changing" the coil, the bike makers would have scooped it up. Unless the engine has been altered for higher revving and or compression, IMHO the stock coil is just fine.
1979 KZ-750 Twin

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  • kzz1king
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Re: Coils, what would you do?

25 Apr 2013 11:41
#583963
Bountyuhunter may be right but many years ago when I replaced my points with a Dyna S and replaced stock coils with Dynas my carb issues disappeared! Major improvement over what I had. New stock coils may have done the same, I don't know but I have no regrets.
Wayne
74 Z1 1075, 29 smoothbores, owned and ridden since 1976
Home built KZ1000 turbo setup

www.kzrider.com/forum/11-projects/532476...s-budget-turbo-build

www.kzrider.com/forum/11-projects/532489-74-z-makeover

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  • baldy110
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Re: Coils, what would you do?

25 Apr 2013 17:21
#584002
DO not trust 30+ year old ignition systems.

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  • zukdave
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Re: Coils, what would you do?

28 Apr 2013 19:37
#584511
I run the Dyna mini coils and think I
could run a weld bead with them.
1980 KZ650 F1
ZX750A1 motor.
Wiseco 810cc kit.
Zukiworks racing ported head.
VM 29 smooth bore's.
Dyna 2000 Ign. w/Dyna mini coil's
APE cylinder stud's and nut's.
APE valve spring's.
APE Track King clutch.
V/H KZ1000 sidewinder.
3.5x18 laced to a KZ1000 disk hub.
150/60/18 Shinko 006 Podium.
63" wheel base.

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  • Matteson
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Re: Coils, what would you do?

28 Apr 2013 19:50
#584515
Dyna is trusted. Stock kz coils are Junk and then soon to be Junk. That's what they say.
KZ 900-a4

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  • CoolerKing
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Re: Coils, what would you do?

10 May 2013 13:26
#586738
I like the universal emgo coils.

They're cheap enough and it eliminates any future problems associated with poor ignition.

www.z1enterprises.com/ItemDetails.aspx?i...zuki&item=EM24-72451
1978 KZ650-C2
1976 KZ400D-3 (sold)

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  • loudhvx
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Re: Coils, what would you do?

10 May 2013 13:55
#586745
The best matching coils, closest to stock for the factory electronic ignition, are the grey Dyna 2.2 ohm coils.

Green 3 ohm Dyna coils will work also, as would the 3 ohm Accel coils.

If you use a Dyna S ignition, you will need the 3 ohm coils.
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.

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  • 650ed
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Re: Coils, what would you do?

10 May 2013 14:18 - 11 May 2013 11:43
#586747
I'm still running stock coils and points on my KZ650 and I haven't had any ignition problems. Maybe I'm just lucky, but I don't plan to fix what ain't broke. B) Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
Last edit: 11 May 2013 11:43 by 650ed.

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  • daveo
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Re: Coils, what would you do?

10 May 2013 19:18
#586779
650ed

I wouldn't have known my coils were weak, if not for replacing them with the Dynatek Mini-coils, on a hunch. Kind of figured the old stuff had it's better days...huge difference!
Then I changed the stock ignition out for the Dynatek 2000. :ohmy:
1982 KZ1100-A2

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  • MFolks
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Re: Coils, what would you do?

10 May 2013 19:24
#586781
The stock coils were marginal, add years of cooking under the tank, and you're asking to be stranded when they fail.....
1982 GPZ1100 B2
General Dynamics/Convair 1983-1993
GLCM BGM-109 Tomahawk, AGM-129A Advanced Cruise Missile (ACM)

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