Converted GL100 ignition to run on 1100 engine.


Information and questions on GL1100 Goldwings (1980-1983)
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David-Mantle
Posts: 87
Joined: Thu Aug 08, 2013 2:33 pm
Location: Grimsby , England - United Kingdom
Motorcycle: 1983 GL1100AD
1980 CB400N

Converted GL100 ignition to run on 1100 engine.

Postby David-Mantle » Wed Jan 01, 2014 7:05 am



I have fitted the cams from a 1975 1000 into my 1983 1100 with the intention of getting a small power increase. I feel now that the engine has the boost I wanted cause of the high lift cams from the early engine design . Even though I have not fitted the early carbs the engine does pull stronger at mid range.
My main querery is has anyone else done this and also moved the ignition to run from the head as against the rear enginer setup?. My main grief with the rear engine setup is that when things go wrong it is a right pain to sort out. The pick ups are a sod to get to especially when either the pin snaps or the timing bolts loosen. At least within the head mount setup on the 1000 engine it is a whole lot easier to work on.

I have bought the dyna ignition back plate assembly from a 1000 which bolts directly into the head mount and hopefully shall sort out the wiring to make it work. If the worse comes to the worse I could revert back to the contact breaker system but I hope that the dyno acts as a replacement for the standard igntion pickups that the 1100 has. Before anyone says anything I know that the vacuum advance is now not there but am not concerned about this.

Should things work out then I should have both systems working with one as redundant just in case either packs in when on a long distant tour. The bolt holding my aurto-advance loosened whilst on holiday in Scotland last year and I had to pay big pennies for recovery. With this modification I hope to be able to ride on standard and swap over to 1000 head ignition at the flick of a switch should I ever be stuck again.


The only silly question is the one you don`t ask. Everything else is game.

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David-Mantle
Posts: 87
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Location: Grimsby , England - United Kingdom
Motorcycle: 1983 GL1100AD
1980 CB400N

Re: Converted GL100 ignition to run on 1100 engine.

Postby David-Mantle » Wed Jan 01, 2014 3:15 pm

As a further point to above the cams are interchangeable between the 1000 and 1100 engines - the points assembly fits directly to where the end cover bolts on , this covers the left side ( when sat on bike ) , the right side is also a direct swap complete with pump and / or tacho drive. ( I have electronic tacho with my bike cause I have the 1983 GL1100AD model but mechanical tacho is no difference ) .
I have the cams from an early ( 1975 ) 1000 which have a high lift and long dwell compared to later engines. they are a DIRECT fit , for those interested , and give a modest increase in power but allow the torque to show an increase a little higher up the rev range. Whereas the standard engine pulls from very low down the range , about 1200 rpm , mine picks up at about 2250 rpm then runs like a horse with a hot poker shoved up its arse. Fitting the carbs from the 1000 , smaller venturi , will give more hp but I find those on the 1100 give me the torque I require. My aim was not for the performance through HP but the gains from acceleration via torque ( if that makes sense to you ) .
This is an open answer to a private question by a member of the forum. No disrespect to him but I feel that others may also ask and that is why I choose to be more public.

My initial question is - has anyone else done this and if so how have they chosen to tackle the ignition option ?
The only silly question is the one you don`t ask. Everything else is game.

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goldminerusa
Posts: 245
Joined: Wed Mar 07, 2012 8:20 am
Location: Southern NH, home again!
Motorcycle: 1982 gl 1100standard, 1983 1000c

Re: Converted GL100 ignition to run on 1100 engine.

Postby goldminerusa » Wed Jan 01, 2014 3:57 pm

Thanks for the response Dave. Now i`ll be on the search for a 1975 donor bike with head mounted timing gear.

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82aspen
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Re: Converted GL100 ignition to run on 1100 engine.

Postby 82aspen » Mon Jan 06, 2014 8:32 pm

David-Mantle wrote:I
Should things work out then I should have both systems working with one as redundant just in case either packs in when on a long distant tour. The bolt holding my aurto-advance loosened whilst on holiday in Scotland last year and I had to pay big pennies for recovery. With this modification I hope to be able to ride on standard and swap over to 1000 head ignition at the flick of a switch should I ever be stuck again.


guy did it at classic, also has 1200 bags on 1100 bike

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David-Mantle
Posts: 87
Joined: Thu Aug 08, 2013 2:33 pm
Location: Grimsby , England - United Kingdom
Motorcycle: 1983 GL1100AD
1980 CB400N

Re: Converted GL100 ignition to run on 1100 engine.

Postby David-Mantle » Tue Jan 07, 2014 12:20 am

I also have the tobox and side bags from the 1200 plus the rear suspension units and air pump from the 1200. Also have the hydraulic clutch from the 1984 1200 which is a godsend to my slightly arthritic hands.
One thing I love about the 4 pot wings is the degree of interchangeability between models - providing one does the correct research of course.
The only silly question is the one you don`t ask. Everything else is game.

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David-Mantle
Posts: 87
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Location: Grimsby , England - United Kingdom
Motorcycle: 1983 GL1100AD
1980 CB400N

Re: Converted GL100 ignition to run on 1100 engine.

Postby David-Mantle » Sun Jan 19, 2014 3:45 am

82aspen wrote:
David-Mantle wrote:I
Should things work out then I should have both systems working with one as redundant just in case either packs in when on a long distant tour. The bolt holding my aurto-advance loosened whilst on holiday in Scotland last year and I had to pay big pennies for recovery. With this modification I hope to be able to ride on standard and swap over to 1000 head ignition at the flick of a switch should I ever be stuck again.


guy did it at classic, also has 1200 bags on 1100 bike



Don`t suppose you have more information about him ? Maybe we could share information and possible help with more mods.
The only silly question is the one you don`t ask. Everything else is game.

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82aspen
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Re: Converted GL100 ignition to run on 1100 engine.

Postby 82aspen » Sun Jan 19, 2014 3:58 am

i'll dig it up, i mentioned the 1200 bags setup on his 1100 cos it's still the only one i've seen and prob helps finding the info,

a pix of his bike with the bags is/was on his avatar, along with some info on the mods

he was the only one i've heard or seen anywhere actually having done, or finished this deal

there are a few other points based system out there that if one system fails, you can switch to another

i can't remember now if the fella went points or electronic on his backup system off the left head,

pretty sure tho that it was hooked up to what was already on the bike

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David-Mantle
Posts: 87
Joined: Thu Aug 08, 2013 2:33 pm
Location: Grimsby , England - United Kingdom
Motorcycle: 1983 GL1100AD
1980 CB400N

Re: Converted GL100 ignition to run on 1100 engine.

Postby David-Mantle » Sun Jan 19, 2014 6:21 am

I swap my ignition over by using a patch lead that bypasses the 1100 ignition amplifiers.The head holds a Dyna S ignition unit that is a direct replacement for the standard 1000 points setup. Ignition amplifiers have been known to overheat and die with no warning and since the Dyna system does not use it this seems to me to be the perfect solution should I need it. I normally run on the standard GL1100 set up because it is pretty good especially with the vacuum auto-advance assembly . The 1000 setup does not have this but the bike runs almost as good with only a slight lag that the vacuum is designed to eliminate.
Head
Head

I thought of using an electric switch using relays that switch from one circuit to another but using the patch lead is simpler and much less complicated. I have the patch leads fed under my seat where they are easy to get hold of should I need them.

Fitting the bags just involves relocating one top lug and welding a bar along the lower mounts and drilling new holes. Really a very simple job and only took an hour to do both sides. The 1200 top box uses the existing frame with just a couple of holes drill in for mounting.
Luggage
Luggage


As an aside I also have a hydraulic clutch using 1200 components ( only 1984 bits fit ) and as far as I know my bike is one of the most modified around.
Clutch
Clutch
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82aspen
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Re: Converted GL100 ignition to run on 1100 engine.

Postby 82aspen » Sun Jan 19, 2014 7:05 am

turns out to be your twin! i still have not seen another
Last edited by 82aspen on Sun Jan 19, 2014 7:12 am, edited 1 time in total.

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David-Mantle
Posts: 87
Joined: Thu Aug 08, 2013 2:33 pm
Location: Grimsby , England - United Kingdom
Motorcycle: 1983 GL1100AD
1980 CB400N

Re: Converted GL100 ignition to run on 1100 engine.

Postby David-Mantle » Sun Jan 19, 2014 7:10 am

LOL - I used to use ClassicWing and that is my post you found. I came here because I find more UK members use this site and besides I seem unable to use the Classic site for some reason. Don`t know if I was booted out or what but seem unable to log in again to it.
The only silly question is the one you don`t ask. Everything else is game.

http://www.ngwclub.com/shoptalk/
http://yuq.me/users/24/690/5CwYRzT8lx.gif

User avatar
David-Mantle
Posts: 87
Joined: Thu Aug 08, 2013 2:33 pm
Location: Grimsby , England - United Kingdom
Motorcycle: 1983 GL1100AD
1980 CB400N

Re: Converted GL100 ignition to run on 1100 engine.

Postby David-Mantle » Sun Jan 19, 2014 12:06 pm

Am I the only one who has amalgamated all these mods into one ? Every mod I have done is simple and must have been done by others before me. Surely I am not the first to make them together? LOL - someone is having a laugh. There is a guy called joedrum on classic who gave me a lot of help plus Dan Fillipi and others. I can`t be the first to meld them all as one????.
The only silly question is the one you don`t ask. Everything else is game.

http://www.ngwclub.com/shoptalk/
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User avatar
82aspen
Posts: 122
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Location: canuck eh!
Motorcycle: 82 aspencade

Re: Converted GL100 ignition to run on 1100 engine.

Postby 82aspen » Sun Jan 19, 2014 3:25 pm

i've run into lotsa things i'd not seen that is/was already out there, in the last six mths,

i'm a noob winger going on a paltry few years now,

i haven't run across any other info, in regards to someone else doing something about those ignition parts at the back of the engine, the way you have, doubt that anyone knows all that has been done out there, someone did 1500 bags on a 1100 recently and i'd not seen that before, could very well be others already have

i also haven't seen another 1200 bags to 1100 other than yours

joedrum has been where few others have




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