Static ignition timing


Information and questions on GL1000 Goldwings (1975-1979)
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pshaginaw
Posts: 33
Joined: Mon Jul 20, 2009 3:53 pm
Location: Waynesville, NC
Motorcycle: 1978 Honda GL1000
1987 Yamaha Virago XV535T
1975 Honda CB360T
1999 Honda Valkryrie
2005 Suzuki Boulevard S40

Static ignition timing

Postby pshaginaw » Sat Jun 16, 2012 2:05 pm



For my '78 Gl1000 rebuild project, I'm following the shop manual procedure for staticly setting the ignition timing by clipping a 12v indicator light between the spring on the points and a ground. With the ignition on, I adjust the points as per the manual until the light comes on when the F1 and F2 marks are ligned up. Three questions: Since this procedure takes a few minutes to accomplish, I notice the ballast resistor heats up too hot to touch during this time. Is this normal when the ignition is on and the engine is not running? Should I put a fan on it? Also, the headlight, instrument lights and the license plate light all remain lit while I work. Is there a way to turn off the lights without disconnecting the harness while doing maintanence?



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Fred Camper
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Location: Metro Detroit, MI
Motorcycle: 1977 GL1000, 1976 LTD GL1000

Re: Static ignition timing

Postby Fred Camper » Sat Jun 16, 2012 2:18 pm

Yes, the ballast resistor gets hot and the fan will not help. You can pull some fuses, but as long as you do not leave the test light glowing while you go back and read the manual it should not be an issue. You can overheat a coil doing this if you daughtle.

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virgilmobile
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Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
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83 GL1100 standard
84 GL 1200 I

Re: Static ignition timing

Postby virgilmobile » Sat Jun 16, 2012 3:09 pm

You also really need to do the "split the difference" timing method.
Because the baseplate is connected to both points,you can end up with correct timing but different point gap.
This is refereed to as "Dwell angle" the amount of time the points remain open,or dwell time.
Often I'll see the timing correct but one set of points at 0.13" and the other at 0.19"
The dwell angle ends up different between the points and will affect the ignition.

In this case the "split the difference would be to re-adjust the first points to 0.16" and reset the base plate for the timing.
This is what is readjusted till both have the same gap AND are timed right.
After all that,do a good sync.That bike should stand up and howl every time you twist the throttle.

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scotterichmond
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Re: Static ignition timing

Postby scotterichmond » Mon Jun 18, 2012 12:16 pm


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pshaginaw
Posts: 33
Joined: Mon Jul 20, 2009 3:53 pm
Location: Waynesville, NC
Motorcycle: 1978 Honda GL1000
1987 Yamaha Virago XV535T
1975 Honda CB360T
1999 Honda Valkryrie
2005 Suzuki Boulevard S40

Re: Static ignition timing

Postby pshaginaw » Wed Jun 20, 2012 9:03 am

I really appreciate all the help. One advantage of the GoldwingDocs forum is that many people who have been 'in the trenches' have excellent insight and techniques that manuals can't provide. Thanks again!

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scotterichmond
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[img]http://images.goldwingdocs.com/scotterichmond_32376/Modestly_restored_1975_GL1000_750/engine_repainted_even_new_embl_3919.jpg[/img]

Re: Static ignition timing

Postby scotterichmond » Wed Jun 20, 2012 9:38 am

pshaginaw wrote:I really appreciate all the help. One advantage of the GoldwingDocs forum is that many people who have been 'in the trenches' have excellent insight and techniques that manuals can't provide. Thanks again!


That's what we are here for, until we ourselves need help :)

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pshaginaw
Posts: 33
Joined: Mon Jul 20, 2009 3:53 pm
Location: Waynesville, NC
Motorcycle: 1978 Honda GL1000
1987 Yamaha Virago XV535T
1975 Honda CB360T
1999 Honda Valkryrie
2005 Suzuki Boulevard S40

Re: Static ignition timing

Postby pshaginaw » Wed Jun 20, 2012 7:05 pm

Hey! I printed out the 'split the difference' instructions and it took me only about 30min to get the points set accordingly. I had done a rebuild on the carbs using Randakks kit and video, getting the float heights right, drilling out just enough metal to get the vacuum slides all the same weight, and turning out the air bleed screws the amount recommended. With a full charge on the battery, I gave the intake plenum a spritz of starter fluid to spin the motor enough to get the fuel pump to fill the float bowls, and for the first time since 2002, the motor started right up! After a few minutes on full choke, it warmed enough to give me a smooth spin around the parking lot. Only took it up to about 3000rpm, but was thrilled to feel how strong and smooth the motor was. Wow! I'm really going to enjoy this machine once I sync the carbs!
Just goes to show you that if you pay attention and listen to those who know what they're doing, good things will happen!

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scotterichmond
Posts: 613
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Location: Marblemount,wa
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Re: Static ignition timing

Postby scotterichmond » Thu Jun 21, 2012 8:31 am

I love it when another GL 1000 is resurected. be careful now, the GL 1000's are scarey fast when set up correctly.
I know mine is. !

WHOO HOO !




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