Suzuki GB Tech Bulletin No. 15 Carb Jetting GT550

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Harrymail
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Suzuki GB Tech Bulletin No. 15 Carb Jetting GT550

Post by Harrymail »

Currently without a GT, but looking
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2020 Triumph Street Twin Red
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yeadon_m
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Re: Suzuki GB Tech Bulletin No. 15 Carb Jetting GT550

Post by yeadon_m »

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

Post by Harrymail »

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
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WP_20170324_16_16_20_Pro.jpg
WP_20170324_16_15_53_Pro.jpg
Currently without a GT, but looking
2003 Yamaha Fazer 600 Blue
2020 Triumph Street Twin Red
1968 BSA Bantam Sports Red
User avatar
yeadon_m
Posts: 7401
Joined: Sat Jan 02, 2010 7:10 am
Location: Canterbury Kent

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

Post by yeadon_m »

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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