Keihin vb 52 carbs

[Popben]

Hi I'm needing some help with my Keihin carbs. They are Keihin vb 52. I'm trying to get float valves for them and having a problem getting them. Can anyone tell which model they are originally from and also what the float heights should be and how to measure them.

 

[tenko750]

Afraid you will struggle with original floats as they are very rare and a lot of the aftermarket valves are not up to standard. More trouble than old originals. The float height for all the VB series is 15.5mm if that helps ?

Please can anybody say how many turns out from fully wound in should the pilot screws be on the VB52A carbs ? These are the UK or Euro carbs without the accel pump (in my case fitted to a 1979 CB750KZ).

Also with these carbs not having an accel pump fitted, will any fuel at all get to the accel pump gallery at the back of the carbs, or is this gallery isolated from the fuel ?

 

[Rampton]

Afraid you will struggle with original floats as they are very rare and a lot of the aftermarket valves are not up to standard. More trouble than old originals. The float height for all the VB series is 15.5mm if that helps ?

Please can anybody say how many turns out from fully wound in should the pilot screws be on the VB52A carbs ? These are the UK or Euro carbs without the accel pump (in my case fitted to a 1979 CB750KZ).

Also with these carbs not having an accel pump fitted, will any fuel at all get to the accel pump gallery at the back of the carbs, or is this gallery isolated from the fuel ?

Start at 2.5 turns out

 

[tenko750]