Single Carb Conversion for my 1976 GL1000


Information and questions on GL1000 Goldwings (1975-1979)
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Aaron Kevern
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Location: Muskegon, Michigan, U.S.
Motorcycle: 1976 GL1000

Single Carb Conversion for my 1976 GL1000

Post by Aaron Kevern »



Does anyone have an Opinion or any Experience converting a '76 GL1000 to a Single Carburetor kit? Seems to me like it would starve of fuel but I'm unsure of how it would actually work....Thanks in advance
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AZgl1800
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Location: Lake Oologah Indian Territory USA
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2009 Piaggio MP3 250cc

Re: Single Carb Conversion for my 1976 GL1000

Post by AZgl1800 »

lots of folks doing it, here is a vendor for the manifold and carb

look at their's for comparisons

https://www.singlecarbconversions.com/
~John

'02 GL1800
2009 Piaggio MP3 250cc
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Aaron Kevern
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Joined: Mon Oct 28, 2019 6:24 pm
Location: Muskegon, Michigan, U.S.
Motorcycle: 1976 GL1000

Re: Single Carb Conversion for my 1976 GL1000

Post by Aaron Kevern »

What happens when you bank a curve sharp for a while? Wouldn't fuel not be able to get to the opposite side? That's my only concern.... And Thank you for the links also.
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AZgl1800
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2009 Piaggio MP3 250cc

Re: Single Carb Conversion for my 1976 GL1000

Post by AZgl1800 »

Aaron Kevern wrote: Sun Apr 12, 2020 4:59 pm What happens when you bank a curve sharp for a while? Wouldn't fuel not be able to get to the opposite side? That's my only concern.... And Thank you for the links also.
No, it will not.
"gravity" is always at the bottom of the bike.

Do you slide out of the seat while going through a twistie?

Centrifugal Force will keep the fuel in the carbs where it belongs.
~John

'02 GL1800
2009 Piaggio MP3 250cc
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Aaron Kevern
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Joined: Mon Oct 28, 2019 6:24 pm
Location: Muskegon, Michigan, U.S.
Motorcycle: 1976 GL1000

Re: Single Carb Conversion for my 1976 GL1000

Post by Aaron Kevern »

Wait, So are you saying Fuel WILL still get to the other side just fine?
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ct1500
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Re: Single Carb Conversion for my 1976 GL1000

Post by ct1500 »

The fuel charge is in an atomized state with the incoming air. The downward stroke of a piston creates a vacuum within the intake manifold pulling the charge into the cylinder.
If I follow your thinking, :D how do the guys that do hill climbs in trucks ever make it to the top with 700hp to spare if the fuel was only getting to the two most rearward cylinders in a V8?
Local and need repair help with your 1500, Valkyrie or ST please click contact
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Aaron Kevern
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Location: Muskegon, Michigan, U.S.
Motorcycle: 1976 GL1000

Re: Single Carb Conversion for my 1976 GL1000

Post by Aaron Kevern »

Ah I see what you're getting at 😂 Thank you. I my '76 GL 1,000 runs okay now, just likes to get stuck at 3,000 RPM's for a while before it drops back down to 950 RPM's. I have it narrowed down to either the Air Cut-Off Valve, or 1 or 2 potentially bad floats I found when deep cleaning the carbs. I will get a Whole Carb rebuild kit soon, as I want to keep this bike original I decided, but I want to try to single carb conversion for my '82 GL 1,100. Any carbs besides VW that you think might also work?
cfairweather
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Motorcycle: 1975 GL1000, 1976 GL1000, 2013 BMW R1200RT, two restored 1971 K1 CB750s, 2019 Triumph Speed Twin
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Re: Single Carb Conversion for my 1976 GL1000

Post by cfairweather »

The problem could be weak springs on the spark advance mechanism. You can fix this by taking about 1/2 loop off each spring.


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