single carb


Information and questions on GL1200 Goldwings (1984-1987)
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steve48
Posts: 13
Joined: Fri Mar 03, 2017 3:03 pm
Location: england
Motorcycle: gl1100 82

single carb

Post by steve48 »



Hi All single carb conversion on a gl1200 motor, i am useing gl1100 manifolds, but my question is the air line hose ports on the cylinder heads that have the chrome hose from the head to bottom of the carbs, what can i plug them with, as i am useing gl1100 carb manifolds not useing gl1200 carb manifolds which retain the chrome tubes in postion, any advice, help many thanks



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rrod1393
Posts: 56
Joined: Wed Aug 22, 2018 3:56 pm
Location: Freehold, NJ
Motorcycle: 1985 GL1200 Interstate
2000 Kawasaki Vulcan 1500 Classic

Re: single carb

Post by rrod1393 »

Some guys have used block freeze out plugs and hammered them into the holes. There is a YouTube video of someone doing it.

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rrod1393
Posts: 56
Joined: Wed Aug 22, 2018 3:56 pm
Location: Freehold, NJ
Motorcycle: 1985 GL1200 Interstate
2000 Kawasaki Vulcan 1500 Classic

Re: single carb

Post by rrod1393 »

Any update on how your single carb conversion worked out. I am looking into it because I just did a full rebuild of my carbs and still have a lag at 2-3k rpm.

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AZgl1800
Posts: 2403
Joined: Thu Oct 30, 2008 2:46 pm
Location: Lake Oologah Indian Territory USA
Motorcycle: '02 GL1800
2009 Piaggio MP3 250cc

Re: single carb

Post by AZgl1800 »

rrod1393 wrote:
Thu May 30, 2019 10:32 pm
Any update on how your single carb conversion worked out. I am looking into it because I just did a full rebuild of my carbs and still have a lag at 2-3k rpm.
Rod,

check in with this guy, he seems to have a good handle on it.

https://www.goldwingfacts.com/forums/5- ... rsion.html
~John

'02 GL1800
2009 Piaggio MP3 250cc

froche
Posts: 275
Joined: Wed Mar 12, 2014 1:56 pm
Location: Vista, ca
Motorcycle: 1985 Goldwing Aspencade (GL1200A)
2002 GL1800

Former bikes;
2000 R1100RT
2005 Suzuki Bandit
1979 Yamaha XS1100
1978 Yamaha XS1100 Special
1990 Yamaha XV250
1980 Yamaha XV750
1979 Honda CB750
1968 Triumph Bonneville T120
1973 Honda CB450
1968 Harley Davidson Sportster
1974 Honda CB750
1968 Honda CL72

Re: single carb

Post by froche »

I blocked off the passages but I made plugs on a lathe. Easily made but you can also take the existing parts and cut off the tube that leads to the rubber tube and plug it with epoxy, or you can try filling it up with brazing (assuming it steel). Don't forget to but new orings and replace these.

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alanc1100
Posts: 85
Joined: Thu Aug 26, 2010 4:51 am
Location: Puyallup, Wa.
Motorcycle: 1986 GL1200A Aspencade

Re: single carb

Post by alanc1100 »

I've seen the Secondary Air System ports blocked with 9/16" freeze plugs with very good results. Specifically, Dorman #555-008 9/16" .250" High steel cup. Can get at almost any car parts store.



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