new project: 1975 Gl1000

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nakedinterstate81
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Re: new project: 1975 Gl1000

#31

Post by nakedinterstate81 »

Each pair has one carb with a jet in there, the other is just a hole.
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1981 Gl1100, looking for a used good engine.
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Re: new project: 1975 Gl1000

#32

Post by Whiskerfish »

nakedinterstate81 wrote: Mon May 17, 2021 10:36 am Each pair has one carb with a jet in there, the other is just a hole.


I do not consider myself a carb expert but I have rebuilt better than a dozen sets and have never seen that before. Makes me suspect someone has rebuilt those before and did not know where the "extra" jet belonged. I would get out your magnifying glass and check the numbers on every jet and compare them to the list to make sure all the right ones are in the right places.

This may be a Mod someone with lots more experience than me has done but I find it very suspicious.
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Re: new project: 1975 Gl1000

#33

Post by nakedinterstate81 »

I am having a hard time telling all the jets apart and where they go. I was hoping to find more information in this book I found on eBay and should be here by end of the week.
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Re: new project: 1975 Gl1000

#34

Post by robin1731 »

Track T 2411 wrote: Mon May 17, 2021 10:20 am
Whiskerfish wrote: Mon May 17, 2021 7:56 am Maybe I am having a brain cramp but I do not recognize the jet in the top left of this picture??

Image
I thought the same thing, and checked the '76 carbs I'm working on. That's a blind hole, not tapped, no plug or jet on my carbs...
Correct. Not something there from the factory. If it is an open hole now someone modified it for some reason. Only the know why. But if you look down where that hole goes if follows the area to the elbow where the pilot air jet is. Someone may have been playing with that. But you would think they would do all four.
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Re: new project: 1975 Gl1000

#35

Post by Whiskerfish »

nakedinterstate81 wrote: Mon May 17, 2021 12:54 pm I am having a hard time telling all the jets apart and where they go. I was hoping to find more information in this book I found on eBay and should be here by end of the week.


Most of us do one carb at a time so as to not mix things up.
Below is the carb chart. It lists the correct sizes for each jet. As a general rule fuel jets are shaped like an hourglass inside while air jets are straight through. Each jet is stamped with a size number. They are very small and difficult to read, that is why I mentioned the magnifying glass. That with a good light and you should be able to make out the markings. Octanes rebuild here will also help a bunch https://ngwclub.com/forum/viewtopic.php ... 952#p21561

Image
"Agreement is not a requirement for Respect" CDR Michael Smith USN (Ret) 2017
"The book is wrong, this whole Conclusion is Fallacious" River Tam
2008 GL1800 IIIA "TH3DOG"
1975/6/7/8/9 Arthur Fulmer Dressed Road bike
1975 Naked Noisy and Nasty in town bike
and a whole garage full of possibilities!!

Psst. oh and by the way CHANGE YOUR BELTS!!!!
nakedinterstate81
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Re: new project: 1975 Gl1000

#36

Post by nakedinterstate81 »

Thanks for the chart, very helpful.
I bagged them up in tiny jewelry bags and labeled the bags.
I double checked today, only one of the bores per pair are threaded and these guys came out.
No markings found.
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1981 Gl1100, looking for a used good engine.
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Re: new project: 1975 Gl1000

#37

Post by Track T 2411 »

Do the carb numbers match?
I would squirt carb or brake cleaner down that hole and see where it goes. Definitely not a stock Wing setup...
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Re: new project: 1975 Gl1000

#38

Post by robin1731 »

Track T 2411 wrote: Tue May 18, 2021 6:25 am Do the carb numbers match?
I would squirt carb or brake cleaner down that hole and see where it goes. Definitely not a stock Wing setup...
Wear safety glasses if you do that. ;)
1975 GL1000 parts bike (parts for sale)
1976 Goldwing Super Sport
1985 Honda Elite
1976 KZ900 Dragbike
1992 ZX7 Dragbike (KZ900 style motor w/NOS)
and a rotation of various purchases
Randakk approved Carb Rebuilder
nakedinterstate81
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Re: new project: 1975 Gl1000

#39

Post by nakedinterstate81 »

I used a dental syringe and the liquid came out of the slow air jet.
The other hole is blind.

Carb numbers match.
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1975 Gl1000
1981 Gl1100, looking for a used good engine.
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Re: new project: 1975 Gl1000

#40

Post by robin1731 »

Like I said, that is where the channel would lead. But it didn't come that way from Keihin. And I don't know why someone would only do that mod to two of the carbs. I'd solder those two jets closed and screw them back in to seal that opening.
1975 GL1000 parts bike (parts for sale)
1976 Goldwing Super Sport
1985 Honda Elite
1976 KZ900 Dragbike
1992 ZX7 Dragbike (KZ900 style motor w/NOS)
and a rotation of various purchases
Randakk approved Carb Rebuilder
nakedinterstate81
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Re: new project: 1975 Gl1000

#41

Post by nakedinterstate81 »

I was going to pay the only radiator shop in Knoxville to take care of my fuel tank but he refused to, citing he was never successful in removing old liners.
So I am going to attack it with MEK and Acetone.
So far the MEK does a good job in the fuel bowls, dissolving the varnish completely, whereas acetone only softened it.
Just a small amount of MEK smell so bad I am going to have to wait for daylight to take it outside.
If that doesn't help I need to buy another used fuel tank. :cry:

Here are some photos of the inside.
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1981 Gl1100, looking for a used good engine.
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Re: new project: 1975 Gl1000

#42

Post by gltriker »

:shock: YIKES!!

RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi

not a sewage plant in there. Chernobyl comes to mind
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RE: a thorough fuel tank cleaning
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nakedinterstate81
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Re: new project: 1975 Gl1000

#43

Post by nakedinterstate81 »

gltriker wrote: Fri May 21, 2021 10:25 pm :shock: YIKES!!

RE: a thorough fuel tank cleaning
"And your carbs will thank you. They no longer live down stream from a sewage plant." -gregforesi

not a sewage plant in there. Chernobyl comes to mind
anim-cheers1 I thought the same thing. It definitely looks like a radioactive elephants foot in there.
1975 Gl1000
1981 Gl1100, looking for a used good engine.
nakedinterstate81
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Re: new project: 1975 Gl1000

#44

Post by nakedinterstate81 »

I am not sure if it's even worth it pouring all the chemicals in there and than scrape and de rust.
eBay doesn't look promising on used fuel tanks and I may catch one that has the same or other problems.
They don't provide photos of the inside, which I understand because it's not easy.

Perhaps someone here has a good one?
1975 Gl1000
1981 Gl1100, looking for a used good engine.
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Re: new project: 1975 Gl1000

#45

Post by Whiskerfish »

I would do nuts and bolts first. then evaluate what is left. I have had good luck with nuts and bolts and then Muriatic acid. Generally I can have a tank clean in a hour or less.
"Agreement is not a requirement for Respect" CDR Michael Smith USN (Ret) 2017
"The book is wrong, this whole Conclusion is Fallacious" River Tam
2008 GL1800 IIIA "TH3DOG"
1975/6/7/8/9 Arthur Fulmer Dressed Road bike
1975 Naked Noisy and Nasty in town bike
and a whole garage full of possibilities!!

Psst. oh and by the way CHANGE YOUR BELTS!!!!
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