gl1100 coils on a gl1000?

6256 Views 12 Replies 10 Participants Last post by CaptainMidnight85, Feb 15, 2014

texasvegh

Discussion Starter · Sep 17, 2009

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Does any one know if coils for a gl1100 will work on a gl1000?

I have a 1978 gl1000 and the spark plug wires are permanently

affixed to the coils. Were as the gl1100 wires can be removed/replaced.

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OnaWingAndaPrayer

· #2 · Sep 17, 2009

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:waving:hello and welcome . the 1100 has an electronic trigger for its ignition ,where as the 1000 uses points . i dont bel ieve they are compatable .

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The New Owner

· #3 · Sep 17, 2009

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Hi,I agree withMike. There probably are a differencesabout thewinding resistances etc. They would maybe work (I believe so) but then you would not get the optimal spark and therefore the performance would probably be affected (if the engine would work at all). On the other side I have one original coil in my GL1000 while the other one is some Polland thing from some other bike (or even othervehicle) which was put there by the PO. The engine works withoutnoticable problems but I'm stillsure that it wouldwork better if both coils were original, which is a task for future (to get an original coil).

Only an opinion!

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RB

· #4 · Sep 17, 2009

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They can be used but they don't fit you need to fabricate a small mounting bracket for the base connection..it's about 2" long with holes at both ends..also I forget if you have to add a resistor or remove it..there are a couple of how to's in the index section and I think on Randakk's site

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texasvegh

Discussion Starter · #5 · Sep 17, 2009

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From what I have seen the 1980 and 1981 gl1100 both have
points. I realy don't want to spend the money on after market
coils if I can use 1100 coils.

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Cookie

· #6 · Sep 17, 2009

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This is a very common swap and does require some resistor fiddling depending on what you run for ignition. A lot of folks use electronic ignition and in that case follow thier directions.
I do believe you will have to modify a bracket a bit.

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Dadoo

· #7 · Sep 17, 2009

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All Goldwings built from 1980 model year until forever have electronic ignition and no points.

John

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RayandTracy

· #8 · Sep 17, 2009

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texasvegh wrote:

Does any one know if coils for a gl1100 will work on a gl1000?

I have a 1978 gl1000 and the spark plug wires are permanently

affixed to the coils. Were as the gl1100 wires can be removed/replaced.

Welcome to this Great Site!

Pull up a chair and join on in!

Ride Safe, Ray

:waving:

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GLGREZMONKI

· #9 · Sep 18, 2009

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I am doing exactly that swap right now.........I am working on a 75 1000 thathad very weak spark on the front cylinders (1 & 2 ) which is the right coil. If Iraised the rpm condiserablythe spark increased and the cylinders kicked in. The rear cylinders had lots of spark and were running fine. Idetermined that the coil was weak. Since I had a set of 81 1100 coils I decided totry them. I fabricated two small mounts, used new ignition wire, wired in new primary wires, left the ballastresistor in placeand gave it a shot and it worked....I thought GREATnow I have lots of spark on the front cylinders butnow for some reason I have no spark on the back pair now. Thinking that perhaps the new left coil may have been faultyI switched the wires form the right coil to the left but still no luck on spark at the rear cylinders. . Oh, also it has some some type of electronic that I am not familar with.So since I was getting frustrated at that point I decided to leave it alone, have a beer, and check the forum to see what I could find. And thats as far as I got today. If anyone has any ideas please advise..........thanks.....GM

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GLGREZMONKI

· #10 · Sep 19, 2009

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Hi Texasvegh............The answer to your question is , yes the 1100 coils will work on a 1000. If you read my last post I explained that I had just installed a set of 1100 coils on a 75 1000 but was having trouble getting spark to the rear cylinders. My reason for switching coils in the first palce was because I hadpoor spark on the front cylinders. As it turned out one of the 1100 coils I had used was faulty and that is why I had no spark to the rear cylinders. As luck would have it I had picked a dud coil from five spares that I had on hand. In any case , today, I replaced the bad coil with another spare and it worked. I have good spark on all 4 cylinders and it is running smoothly. I have'nt driven it yet because I have to replace the steering bearings and fork seals. When I do drive it and if I have any problems relating to the 1100 coil set up I will let you know.........GM

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OnaWingAndaPrayer

· #11 · Sep 19, 2009

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thats good info then . it should help lots of folks in future as the 1000s age .

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CRAFTMAN600

· #12 · Feb 15, 2014

Coil swap 1000/1100

looking into this rite now.

Also found 1100 coils are fine to use with this. Location not really an issue. Ballast placement with this set up stays 3 ohms correct yes or no.

I know that GL1000's have issues in this department, This bike is a daily rider to and from. Not trying to go big just go.

thanks..

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CaptainMidnight85

· #13 · Feb 15, 2014

Ballast will stay at +/- 3 ohms. Amount of ballast should be determined by what triggering device you use.
You can adjust voltage input to the coils by adjusting the ohm value of the power resistor used.
I run my 1100 coils with about 1.34 ohms for about 10.5Vdc.
I run the ignition "hot" - meaning no secondary resistance.
Scosche EFX oxygen-free 8ga. amplifier power cable for ht leads.
NGK plug boots without resistors. I've replaced the 5k ohm resistors with copper-clad steel pins.
Non-resistor NGK D8EA's gapped about .045 or so.

I've over 22kv at idle...
I've a thread on it.
I trigger the coils using a Dyna III.

I mount my coils to the rear of my conversion, just in front of the fuel tank.

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