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Discussion Starter · #1 ·
hi wingers

the project 1200 '84 is now
down to frame. just acquired a new
main harness and the carbs haven't
been used for 2 years. time for an
overhaul.

a friend has sold me a set of
carbs 'from a working bike, same
as yours!'
on arrival i checked the original none
working carbs, against the working
carbs and they appear to be the same.
i turned them over to discover a
big difference underneath. there
is an extra part, with extra pipes etc.

i was hoping to just swop the carbs out,
but sadly they're not the same?

does anyone recognize what bike
the carbs are off?

many thanks

Angel
 

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Administrator
1987 GL1200 Interstate
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23,330 Posts
Just looks like a U.S. spec set.
It amazes me that you would consider, after all the work you are putting into that bike, just tossing in a set of carbs that you hadn't gone through.
Do you know what year the carbs are off of?
 

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Honda Guru
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2,075 Posts
The carbs on the left side are 49state version. The carbs on the right are California version carbs.
 

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Junior Grue
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8,153 Posts
Your new carburetors are from a USA specification bike which yours are not.

You can plug the four large hoses under the air box or move the carburetors to your air box. Your choice.
 

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Premium Member
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Discussion Starter · #5 ·
1200 '84 i/state carbs query vs origin of bike

hi ken, dennis and other wingers!

thanks for your replies.

i wouldn't of just swopped them out,
the need overhauling first! :)
my friend has serviced the californias
for me. he tested them on his
wing, same year. perfectly balanced
he said, 'bolt them on, don't touch them!'

i don't even know the origin of our
wing. someone advised that wings
are made in America and others in Japan.
you've all got me curious now! :)

please will you help me find the origin
of the wing! see the attached frame
label!

many thanks for helping me,
with this research!

angel :)
 

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1987 GL1200 Interstate
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'84 motors were built in Japan. Newer in U.S.
I can't remember when they started building 'Wings in the Ohio assembly plant. Someone here surely knows.
Those new carbs are 49 state U.S. spec. If they are the same year as yours, they should show the same number (53A).
 

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Premium Member
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Slow down guys.
The carbs on the right are for US production bikes. They are not necessarily California emmission carbs.
The extra cannister and octopus are for US secondary air intake systems (EPA)
Whether the carbs are California or not would be determined by the jets. They're different.
Once you remove the airbox/reed valve assy, you'll find a couple holes that will need to be plugged, otherwise, swap the carbs to the other plenum ASSEMBLY as suggested.
 

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Junior Grue
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I'm not sure where that frame label in your picture is located but it does say "HONDA OF AMERICA".

For more definitive information the V.I.N. tag on the left side of the steering neck would be the best place to look.

On the "new" carburetors there is no evidence that they are for California only that they were made to American emission specifications, I have no idea what other countries required the same specifications. To see if they're California, 49state or other you'll need the number stamped into the side of the carburetor bodies.

As I said if you wish to use the "new" carburetors without removing them from the air box just plug the four large hoses.

Any time carburetors are removed and replaced the linkage should be synchronized but if they are in good tune they should run acceptably before synchronization.
 

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Honda Guru
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That'll teach me to 'type too fast'. I mistook the anti-afterburn for the purge control valve.
Only the Calif carbs have a purge control valve. I stand corrected.
 
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