Mikuni carb tops ?

[Neill666]

Hi folks might be a daft question but I

Had the carbs Mikuni 40's off my Gsxr motor last night and noticed the carb tops have number and letter combinations

Mines have 3 tops with C1 on them and one has B1 I take it there is a reason for this but not sure what and does the 

B1 top need to be in a certain position as it seems to restrict the slide I also have a set of 38's the same 3 , C1 and 1 B1 but they were positioned

differently any help greatly appreciated 

Thanks :-) 

 

[Oilyspanner]

C1 is definitely for the 40mm CVs, I had a slightly damaged carb top on one of my carbs - I noticed that the 36mm tops don't appear correct and I wasn't sure about the 38s, so I searched around on the net until I found the correct one at a decent price. I think the diameter is okay , but the central protrusion length varies.

Someone has probably altered some or similar, so maybe they'll add to the thread . .  hopefully !

[Captain Chaos]

there are 3 different carb tops for the 40mm BST's. One for Sweden and Germany (13502-41C10), one for France (41C30) and one for the other markets (41C00).

Germany and France had a 100bhp limit in the early '90s.

[Gixer1460]

Doesn't only one of them have the vacuum take off for the fuel tap, hence 3 same + 1?

[Captain Chaos]

they all have a take-off, unused ones are plugged.

The same take-offs are used for synchronising the carbs.

[Gixer1460]

3 hours ago, Captain Chaos said:

they all have a take-off, unused ones are plugged.

The same take-offs are used for synchronising the carbs.

Ha Ha Ha - shows how long since i've used CV carbs LOL!

[Neill666]

Cheers :-)