Carb. Jets


Information and questions on GL1100 Goldwings (1980-1983)
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Kevin C
Posts: 6
Joined: Thu Jan 02, 2020 12:16 pm
Location: Littleton, Co.
Motorcycle: 1982 GL1100A Aspencade
1986 GL1200A Aspencade

Carb. Jets

Post by Kevin C »



Hello all,
I am wondering if anyone would know the carb. jet size for high altitude. I live in the Denver area. I do not know what size are in the GL1100A now. The bike was out of Neb. My other GW same year will run circles around it. I am going to rebuild the carbs on it soon. The bike is sluggish and has very little power.
I hope someone can help.

Thanks

Kevin


User avatar
DenverWinger
Posts: 1938
Joined: Thu Jun 23, 2011 2:20 pm
Location: Denver, CO
Motorcycle: (s)
1980 GL1100 STD Vetter (2005-)
1993 GL1500 Aspencade (2017-)
1983 Trav-Lite Camper (2010-)
Past rides
1972 CL350 (1980-1988) sold
1978 Suzuki GS550 (1985-2005) sold
1977 GL1000 (2002-2006) sold

Re: Carb. Jets

Post by DenverWinger »

Ya, mine was putting out a good quantity of black smoke on hard acceleration here at altitude...

I don't remember exactly what jets were in mine nor what I put in it, but what I did was take the OEM Main jet size and go 10% smaller. Helped a lot.
♫ 99 Little Bugs in the Code, ♪
♪ 99 Bugs in the Code. ♫ :(
♫ Take one down, Patch it around, ♪
♫ 127 Little Bugs in the Code. ♫ ♪ :shock:

~Mark
User avatar
newday777
Posts: 2146
Joined: Tue Jan 11, 2011 5:21 pm
Location: Milford NH summer/fall & Oceanside, CA winters(N San Diego) with lots of miles riden between
Motorcycle: 2008 Cabernet Red. Level 4

1983 GL1100A Wineberry 36,000 miles

1975 CB750 K5 Planet Blue 7,800 miles

1976 CB750 K6 Anterris Red 25,000 miles

Past rides
1999A Restored from PO neglect & sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: Carb. Jets

Post by newday777 »

Welcome to the forum Kevin

The stock jets were, mains 145, idle jets is 35. You will need to test jets with a spark plug color test to get the accuracy. Unfortunately you have to pull the carb racks to change the jets when testing on the wings.
A trick that riders use in the mountains for fuel burn is to add a couple ounces of 2 stroke oil(TC-W3 rated) to your gas to slow the burn and lower the octane to compensate for thin air. The oil helps lubricate the carbs too. It doesn't hurt to use it either.

Be sure to fully strip the carbs down of all rubber parts, especially the air mixture screws, springs, washers and orings to do a proper cleaning, using an ultrasonic cleaner or boil clean process, to be sure all fuel ports are cleaned of any hardened gas in the tiny ports these carbs have, spray cleaning alone will not properly clean the carbs. These blocked ports will give you a lack of power you are experiencing.
User avatar
newday777
Posts: 2146
Joined: Tue Jan 11, 2011 5:21 pm
Location: Milford NH summer/fall & Oceanside, CA winters(N San Diego) with lots of miles riden between
Motorcycle: 2008 Cabernet Red. Level 4

1983 GL1100A Wineberry 36,000 miles

1975 CB750 K5 Planet Blue 7,800 miles

1976 CB750 K6 Anterris Red 25,000 miles

Past rides
1999A Restored from PO neglect & sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: Carb. Jets

Post by newday777 »

I forgot to add the picture of stock jet sizes of the 82 gl1100(looked at your profile to see what you listed as you didn't specify the year in your question.....)
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Kevin C
Posts: 6
Joined: Thu Jan 02, 2020 12:16 pm
Location: Littleton, Co.
Motorcycle: 1982 GL1100A Aspencade
1986 GL1200A Aspencade

Re: Carb. Jets

Post by Kevin C »

Sorry about not putting in the year in question. What I have is a GL1100A 1982.
Kevin C
Posts: 6
Joined: Thu Jan 02, 2020 12:16 pm
Location: Littleton, Co.
Motorcycle: 1982 GL1100A Aspencade
1986 GL1200A Aspencade

Re: Carb. Jets

Post by Kevin C »

I want to thank everyone who has responded to my question.
There is a lot of knowledge out there. When I take the carbs out to see what is in there I will put the new knowledge to use.
Thanks again everyone.
daveb80205
Posts: 1
Joined: Mon Jul 06, 2020 6:58 pm
Location: United States
Motorcycle: 1982 Goldwing, 1965 MBW r75/5, 1992 BMW R100GS, 1995 BMW K75, 2008 Buell Blast

Re: Carb. Jets

Post by daveb80205 »

Hello Kevin,

I am totally new to this site and the Honda GLs (I'm a BMW airhead guy with a side of K-BIke, 75s). I just picked up at 1982 GL1100. It runs, but it idles a bit rough and stumbles when accelerating. I don't know the history of the bike, but was planning on a carb clean/rebuild as part of my work on the bike. What can you tell me now that you have gone through the rebuild?? Thanks in advance!

BTW, I'm in Denver as well :)
Kevin C
Posts: 6
Joined: Thu Jan 02, 2020 12:16 pm
Location: Littleton, Co.
Motorcycle: 1982 GL1100A Aspencade
1986 GL1200A Aspencade

Re: Carb. Jets

Post by Kevin C »

Dave,
I ended up not having to rebuild the carbs. I put a can of Sea Foam in and it cleared up for now. This winter I will take and rebuild them. The first thing you should do on the wing is replace the timing belts. Not a good thing if they break.
Welcome to the form. If any more questions, let me know I will help the best I can. Enjoy the ride.

Kevin C


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