In need of 78 GL1000 Goldwing carb parts


Information and questions on GL1000 Goldwings (1975-1979)
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lazereth
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Location: Beaufort, SC
Motorcycle: 1978 Honda Goldwing GL1000

In need of 78 GL1000 Goldwing carb parts

Postby lazereth » Mon Dec 19, 2011 3:45 pm



I'm having issues with a 78 Goldwing GL1000 I recently purchased. The bike was running good but I could tell something wasn't quite right. I decided to clean the carbs and in the process found that I needed to replace a few things. I found another bike for sale for parts and once I took apart the carb assembly, I noticed the carbs are different than the ones on my bike. The bikes look very similar and since the VIN matched the title, 78 Goldwing GL1000, I assumed it would work. I don't suppose they made two different engines or carb assemblies that year? One of these bikes must have a different motor. The carb part that I need to get my bike running is a long cylinder metal part that goes in between 2 of the carbs. There are actually 4 of these all together on the bike, 2 are bigger around than the other 2 and there is a very small hole that runs through the cylinder, I assume for fuel from one carb to the other. If anyone can help me figure how to find this part or figure out exactly which engine is which, it would be very much appreciated.



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WingAdmin
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Re: In need of 78 GL1000 Goldwing carb parts

Postby WingAdmin » Mon Dec 19, 2011 4:03 pm

The engines and carbs were the same for all 78's.

Can you post the serial numbers of the engines? We can tell for sure if an engine then doesn't belong to a 78.

Also, pictures of the carbs in question would probably help us identify them.

lazereth
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Location: Beaufort, SC
Motorcycle: 1978 Honda Goldwing GL1000

Re: In need of 78 GL1000 Goldwing carb parts

Postby lazereth » Tue Dec 20, 2011 1:53 pm

The serial # for the bike I'm repairing is GL1E-4054984 on the engine, GL1-4054904 on the frame. The parts bike has GL1E-4056876 on the engine and GL1-4057254 on the frame. I'm working on the pics, thank you for the help.

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WingAdmin
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1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: In need of 78 GL1000 Goldwing carb parts

Postby WingAdmin » Tue Dec 20, 2011 3:49 pm

lazereth wrote:The serial # for the bike I'm repairing is GL1E-4054984 on the engine, GL1-4054904 on the frame. The parts bike has GL1E-4056876 on the engine and GL1-4057254 on the frame. I'm working on the pics, thank you for the help.


All four of those serial numbers are for 1978 GL1000's, so you haven't got a mismatched engine. Someone must have replaced the carbs on one of them.

Have a look at the carb model numbers. There were several different GL1000 carbs:

1975: 755A
1976: 758A
1976 LTD: 763A
1977: 764A
1978: 769A
1978 (California emissions): 771A
1979: 771A

You'll find the carb ID on the #1 carb flange:

Carb ID on GL1000 carb
Carb ID on GL1000 carb

lazereth
Posts: 7
Joined: Fri Sep 09, 2011 8:26 am
Location: Beaufort, SC
Motorcycle: 1978 Honda Goldwing GL1000

In need of 78 GL1000 Goldwing carb parts

Postby lazereth » Wed Dec 21, 2011 7:27 pm

The carbs on the bike I'm repairing have this # on the side 48C[A]TJ and right above those #s was VB. These carbs don't look original, they are very clean. I didn't realize when I first purchased the bike, it's my first bike. Now that I've spent some time reading up and working on it, I realize the difference. Thanks again for your help.

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WingAdmin
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1998 XV250 Virago (sold)
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Re: In need of 78 GL1000 Goldwing carb parts

Postby WingAdmin » Wed Dec 21, 2011 8:14 pm

I think you have GL1100 carbs on your bike. They look different than GL1000 carbs:

GL1000 carburetors
GL1000 carburetors


GL1100 carburetors
GL1100 carburetors

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Fred Camper
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Re: In need of 78 GL1000 Goldwing carb parts

Postby Fred Camper » Wed Dec 21, 2011 9:22 pm

If you do have Gl1100 carbs on her, do not be in a rush to change them back. They have more low end torque and a bit less power at high rpm, but lots of folks appreciate the simplicity and low end performance. So ride it a spell before deciding unless you are restoring to pure stock.

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Missourimike
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Re: In need of 78 GL1000 Goldwing carb parts

Postby Missourimike » Sun Dec 25, 2011 9:31 am

With the GL1100 carbs, do not assume that GL1000 carb instructions will be of value. Get instructions on the carbs you have and follow the instructions, to the letter. Do not mix up the parts from one carb to another, keep them all separate. The float settings for 1000s and 1100s are way different.

lazereth
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Joined: Fri Sep 09, 2011 8:26 am
Location: Beaufort, SC
Motorcycle: 1978 Honda Goldwing GL1000

In need of 78 GL1000 Goldwing carb parts

Postby lazereth » Tue Dec 27, 2011 1:44 pm

Thank you for everybody's help, I do believe that the carbs are GL1100. I don't have any immediate plans to restore it to the original carbs and will definitely find the specifications for the GL1100. I'm not having much luck posting pics, I did find a website that has the parts. Here is the link to the page where the parts that I need is http://www.danburypowersports.com/fiche ... &fveh=3431. It says it's a 1980 GL1100 and the part is JOINT SET B, FUEL 16031-463-004 and the other part is, I believe, a low speed jet I found on ebay http://www.ebay.com/itm/CB700-CB700SC-C ... es&vxp=mtr it's the smaller jet and I only need one. Thanks again for the help!

lazereth
Posts: 7
Joined: Fri Sep 09, 2011 8:26 am
Location: Beaufort, SC
Motorcycle: 1978 Honda Goldwing GL1000

Fuel coming from exhaust

Postby lazereth » Tue Feb 07, 2012 8:44 am

Hey everyone, I was able to locate the parts I needed for my carbs. Thank you for all your help. I now have another issue with the same bike. I put the carbs back on the bike after cleaning them and now I have, what looks like fuel, dripping(sometimes pouring) from my exhaust pipe. The bike idles very well, but when I tried to ride it, very little power. Any ideas what may cause this?

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Fred Camper
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Re: In need of 78 GL1000 Goldwing carb parts

Postby Fred Camper » Tue Feb 07, 2012 6:55 pm

Sounds like a float height issue to me. GL carbs are particular regarding float height. Seems most likely based on my limited knowledge.

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dingdong
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Re: In need of 78 GL1000 Goldwing carb parts

Postby dingdong » Wed Feb 08, 2012 9:20 am

Either float adjustment is off or the float valves aren't sealing properly. It has been my experience that anytime you disassemble an old set of carbs without replacing all of the o-rings and seals you are wasting your time. I would recommend a rebuild kit from www.randakks.com.
His site is a must read for anyone with a gl1000 or gl1100.


Tom

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