Project 78


Information and questions on GL1000 Goldwings (1975-1979)
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Victour78
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Location: Lakeland , Florida
Motorcycle: 1978 1000 GoldWing Naked
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Project 78

Postby Victour78 » Tue Aug 10, 2010 11:29 pm



Well I am still alive after moving 3 times.. and now need to finish my Wing.. I just need to solve the #1 and 4 cylinders not firing except for a pop once in a while. not the Carbs. had them off three times... Think the 1&4 coil or wires could be bad will check after I get the battery for my Meter... spark seems very weak.. It has the Dyna-S and a extra Resistor in parallel with the stock resistor.. I have made this bike naked and would like a 80 to 82 seat for a 750 F SS complete with Taillight.. Or a low cost CBX one from 79+.
I have installed Sporster mufflers , Stock ones that is. and want to ride so bad , but the Pot-ato sounds like it has been sliced..lol









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dingdong
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Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: Project 78

Postby dingdong » Wed Aug 11, 2010 8:06 am

Victour78: The right coil fires 1/2 and the left 3/4. I would begin checking the plug wires and caps
(Make certain you have them connected to the correct cylinders) If they are correct then the coils are not bad if 1/4 are not firing. Check the resistor inside the plug caps, they can go bad or just get corroded. The connection of the wire into the cap can be bad or loose. The caps screw into the wire. Maybe cut 1/2" off the end of the wires and screw them back on after cleaning screw connector. Until you are sure of all this there is no point doing anything else yet.
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

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Victour78
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Location: Lakeland , Florida
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Re: Project 78

Postby Victour78 » Sun Aug 15, 2010 12:10 pm

I pulled the Coils Yesterday. and found that one of the push blades was very loose.. Checking the wires I found that a couple wires were loose in the Plug Caps.. I cut all of those back 1/2" and for a better connection .. the wire covering don't seem to be hard and brittle..
Now ! the Stock 3 ohm Ballast resistor was still hooked up even though the Dyna-s instruction ask that it be unhooked.. the Added 2 ohm resistor was parallel wired to it. They read 3.0 and 2.0 respectively. but the reading with the piggy back is only 1.1 .. I want to use one 1.8 resistor 30 Watt. I think that should be fine.. also the Resistors in the plug caps read. 4200 Ohms I don't have a radio so can I just use brass inkpen tubes(running out of inkpen tubes) instead of fuses.. and increase my plug gap to .034 ? The resistance between 1 & 2 and 3 & 4 are 13,000 ohms So the High voltage windings seem fine.. The input Ohms read 3 ohms with the Ballast wires removed.. I must admit the #2 wire was pulled part way out of the plug cap.. almost 3/8" that sure could cause the problem..
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dingdong
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Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500
2004 NRX1800 Rune

Re: Project 78

Postby dingdong » Mon Aug 16, 2010 8:07 am

Sounds like you have found a number of problems that could cause the symptoms you describe. Looks like you have stock coils so 3 ohms across the primary windings isn't correct.??? I would definitely use a ballast resistor. Resistors in parallel will always measure somewhat less than the smallest resistor. The 1.8 ohm should be fine. Some of the older Dyna ignitions called for the piggy back resistors. The resistor is to limit the voltage at the stock coils to prevent over heating. If you use 3 ohm high performance coils like Dyna or Accel then the resistor can be eliminated. Lots of guys remove the plug cap resistors without problems. 4200 (normal being 5000 +/-) ohms is pretty close to normal if you choose to use them. Good luck!
Tom
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

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Victour78
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Joined: Sat May 01, 2010 1:08 pm
Location: Lakeland , Florida
Motorcycle: 1978 1000 GoldWing Naked
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Re: Project 78

Postby Victour78 » Mon Aug 16, 2010 9:15 am

Yes the 3 Ohm is correct with points, but the Dyna-s lowers this to 2 ohms.. with the inductance pickups... both coils read 3 ohms on the primary winding so I feel they are ok.. I will fix the little things and only run the 2 ohm resistor and see what happens.. Thanks..

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dingdong
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Motorcycle: 1976 gl1000
1993 gl1500
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Re: Project 78

Postby dingdong » Mon Aug 16, 2010 1:05 pm

Forgot to add this in the last reply. Stock coils on the gl1000. Measuring directly across each coil primary side with everything else disconnected the windings should read 2 ohms.
Tom

A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

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Victour78
Posts: 14
Joined: Sat May 01, 2010 1:08 pm
Location: Lakeland , Florida
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Re: Project 78

Postby Victour78 » Tue Aug 17, 2010 11:25 pm

Don't know why mine read 3ohms I used a Simpson analog meter.. Ok assembled all and Now runs great on 3 cylinders.. think I messed with the carbs.. so # 2 or 4 is too lean.. will adjust tomorrow. Hope to load video of a great sounding Gl1000...




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