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Mechanics 101 Can't get it to run right? Find a trick to add HP?
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Old 12-19-2017, 08:21 AM   #1
jonnylit
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Default Mikuni RS34-D21-K on a 1988 GSX600FJ?

Does anyone have experience with retrofitting a set of Mikuni RS34-D21-K carbs on a 1988 GSX600FJ Katana? Have torn down and rebuilt the original carbs 3 times and soaked all the carbs three times overnight, and these things are a pain in the ass. These newer carbs are all over E-Bay as a replacement set up. Anyone try this yet?

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Old 12-19-2017, 08:57 PM   #2
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Flat side carbs - I wouldn't recommend it. I have no experience with them, but I hear they need constant retuning. Like every day because of differences in the weather.

You can get 89-600 carbs though. Parts are WAY more available. Cleaning/rebuilding probably still a pain in the ass, but...that's carbs. Same would hold true with the flat sides as well.
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Old 12-19-2017, 11:25 PM   #3
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You will likely need a twin throttle cable also
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Old 12-20-2017, 01:00 AM   #4
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Flat slides for street use will drive you crazy..they require constant tuning as the weather changes. I donít run mine anymore. You can run any Katana 600 carb 90-06 will all work.
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Old 12-26-2017, 07:10 PM   #5
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Just gonna leave this here...
carburetors carbs Suzuki GSX600F Katana 600 90-97
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Old 12-26-2017, 08:50 PM   #6
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Sweet set...
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Old 01-21-2018, 06:41 PM   #7
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Missed out on them. I am thinking it may be time to replace the original 88 carbs with a newer, more serviceable set. What would be the best year or set to nail down?
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Old 01-21-2018, 09:19 PM   #8
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Any kat 600 carb will work. 90-97 is still a serviceable and more direct fit.
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Old 01-22-2018, 08:57 AM   #9
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yeah if i buy another bike with carbs on it i think i might just fling it off a bridge. i have gotten so tired of carb work over the last 10 years i dont even bother anymore i just pay the extra and let someone else poke it with a stick lol.
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Old 01-22-2018, 09:02 AM   #10
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Kat carbs are a snap.....once you get them clean. Stabil is your best friend..
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