Suzuki GB Tech Bulletin No. 15 Carb Jetting GT550

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Harrymail
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Location: Hedon, East Yorkshire

Suzuki GB Tech Bulletin No. 15 Carb Jetting GT550

Postby Harrymail » Thu Dec 28, 2017 7:25 pm

1977 GT550A Black

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yeadon_m
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Location: Canterbury Kent

Re: Suzuki GB Tech Bulletin No. 15 Carb Jetting GT550

Postby yeadon_m » Fri Dec 29, 2017 1:28 pm

Also, interesting, as my GT550 came with a left carb stamped 346-22L, and the others were -21M and -21R. So mine was already modded in the factory I guess!
Mike

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Harrymail
Posts: 246
Joined: Thu Jul 07, 2016 8:35 pm
Location: Hedon, East Yorkshire

Re: Suzuki GB Tech Bulletin No. 15 Carb Jetting GT550

Postby Harrymail » Sat Dec 30, 2017 4:17 pm

yeadon_m wrote:Also, interesting, as my GT550 came with a left carb stamped 346-22L, and the others were -21M and -21R. So mine was already modded in the factory I guess!
Mike


Hi Mike, My GT550A has all three carbs overstamped. They have originally been 346-20, but have been changed (at the factory I presume) to 346-22L, 346-21M & 346-21R. Pics below (before I polished them up !)

Paul

WP_20170324_16_17_00_Pro.jpg

WP_20170324_16_16_20_Pro.jpg

WP_20170324_16_15_53_Pro.jpg
1977 GT550A Black

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yeadon_m
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Joined: Sat Jan 02, 2010 7:10 am
Location: Canterbury Kent

Re: Suzuki GB Tech Bulletin No. 15 Carb Jetting GT550

Postby yeadon_m » Sat Dec 30, 2017 5:53 pm

Crikey, that is good heritage info! my B carbs were stamped as I described just once, not overstrike. The NOS carbs I have are all 346-20s but I've fitted stock UK 550B jetting so I think I have it correct...I might at some point swap the needle jet / jet needles from the bike's original carbs over to my new bodies. But life's too short if its running OK!
Cheers,
Mike


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