What is needed to upgrade early gl1500 carb to newer style carb - Steve Saunders Goldwing Forums
 
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post #1 of 8 (permalink) Old 12-23-2014, 10:35 AM Thread Starter
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Location: Pittsburgh, Pa
Year: 1989
Make: Honda
Model: GL1500
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What is needed to upgrade early gl1500 carb to newer style carb

Guys could you tell me what if anything is needed to convert my 1989 GL1500 carb to the newer style 91-99 carb? If so what year carb is the best?

Thanks for your help,

Jason
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post #2 of 8 (permalink) Old 12-23-2014, 12:26 PM
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Honda changed the carburetors in 1989, 1990, 1992, 1995, 1997 and 1998. The 1998 - 2000 carburetors are considerably cheaper than the earlier years.
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post #3 of 8 (permalink) Old 12-23-2014, 01:29 PM
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Originally Posted by DBohrer View Post
Honda changed the carburetors in 1989, 1990, 1992, 1995, 1997 and 1998. The 1998 - 2000 carburetors are considerably cheaper than the earlier years.
Cheaper...as in less expensive to purchase, or cheaper as in inferior in materials, workmanship...etc.?

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post #4 of 8 (permalink) Old 12-23-2014, 03:16 PM
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Less expensive to purchase. They are good carburetors, my 1999 carburetors have never been off with 207k miles and they perform great.
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post #5 of 8 (permalink) Old 12-24-2014, 08:20 AM
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Quote:
Originally Posted by automated11 View Post
Guys could you tell me what if anything is needed to convert my 1989 GL1500 carb to the newer style 91-99 carb? If so what year carb is the best?

Thanks for your help,

Jason
I have 88 carb.s in my 88 and my bike runs great and gets close to 40 MPG.

Just because they are older does not mean they are junk on that alone. As long as you get them clean, install the proper jets, new seals and gaskets, and a new accel pump there is no need to change them.

IMHO: If you can figure out were all the different vac lines and other carb. controls go to make the swap work, then you have the ability to rebuild your original ones.


Bill
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post #6 of 8 (permalink) Old 12-25-2014, 05:15 PM
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Video of how to remove 1988 1500 carbs.
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post #7 of 8 (permalink) Old 01-04-2015, 11:30 PM
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Model: 2010 GL1800 ABS
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I replaced the carbs on my '88 with a set from a '94. I rebuilt the '94 carbs to make sure everything was clean and properly adjusted. The swap was very straight forward. No surprises.

The '88 has an air line running to a solenoid under the right side fairing storage pocket. The '94 carbs don't have that line so the solenoid goes unused. Make sure to check/replace the vacuum lines on the intake under the carbs. It gets cracked with age and with the carbs out you can easily get to it.

My 5th Wing
\'83 GL1100
\'88 GL1500
\'02 GL1800
\'88 GL1500
And now a 2010 GL1800 ABS
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post #8 of 8 (permalink) Old 01-13-2015, 08:51 PM
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I've had my 88 carbs off at least 40 times trying to get them right. Replaced almost every part, ( new cv slides, floats, needles and seats) rejeted 3 or 4 times. It would get close, then the idle was everywhere! Replaced a lot of vacuume hoses, including the one under the carbs with the 90deg bend, and new carb insulators. Tried Removing every vacuume hose from carbs, plugged and capped the open ends, tweaked and got 25 mpg! Probably damaged the carbs at some point cleaning or dissassembling them! (Never stopped me from riding though!) Paid $75 for a set from a 92 on ebay. Had to clean and use the new vacuume pistons from the 88 carbs, and it runs great! The 88 had 6 vac hoses, the 92 has 4. 2 vac hoses went to an air jet controller in the right faring pocket. 88 and 89 used the AJC but was eliminated in 90! It was for high altitude( above 5,000 ft.). So I took it out and capped the hoses. The carb vents were turned down on the 92, and a vacuume hose added to the left carb just above the insulators. I capped that. Had to use the throttle cable bracket from the 88 on the 92(the 88 had an offset because of the cruise cancel switch. The 92 doesn't have a cruise cancel on the throttle cable). Some parts are not interchangeable( throttle linkage, choke linkage). Saw an 88 at the junk yard with 287,000 miles with the origional ECM not the MT2. Some have had success with the origional 88 carbs. Just not me! Hope this helps.
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