BS32 Float height

What is the float height for BS32 carbs?

Proxy wrote: What is the float height for BS32 carbs?

The correct float height is whatever results in the correct fuel level.

Where the fuel level is already way off, the dry-measured-on-the-bench float height adjustment could at least be a stab in the right direction toward the main objective, which is achieving the correct fuel level.

The FSM procedure regarding measured float height likely hits closer to the mark when dealing with new carbs with new floats, etc., and not so much when dealing with old floats that have suffered through earlier tang adjustments, possibly bent and re-straightened, etc.

To satisfy academic curiosity, after correct fuel level has been achieved in a particular carb, the float height could then be measured to show what height results in correct fuel level in that particular carb with its particular float parts.

Among different carbs with correct fuel levels, it's no surprise to discover different float heights among the different carbs. And the different float heights may vary more or less than the dry measurement specified in the FSM.

Sorry I don't have at hand the FSM specified dry-measured float heights for the BS32 carbs.
But the float height is irrelevant so long as the fuel level is correct.

In other words, a carb with correct fuel level doesn't care about what its dry-measured float height is.

Yeah -- I know! :lol:

Good Fortune!

Yup.... I asked the wrong question.:laugh: OK what is the correct fuel level?

I know it's subjective but there must be a starting point. Like 3mm plus or minus 1mm below bottom edge of carb body like it states for the VM carbs.

wiredgeorge wrote: The float level measurement is fairly inaccurate on older carburetors where the original orientation of the floats has been messed up by folks in the past who have bent the floats and not the tang on the float to adjust them...If the floats themselves have been bent in the past 30 years, it is more or less a waste of time.

Some types of assemblies like the BS32/34 used on later carburetors call for a 18mm float height and this float height WILL NOT give you the proper amount of gas in the bowl which is about 4mm (most models) below the gasket mating line if you use the service fuel level method of measuring....

This link includes the image shown below.

www.mtsac.edu/~cliff/storage/gs/Mikuni_B...Rebuild_Tutorial.pdf



Good Fortune!

In the Kawa W/S manual it gives 18.6mm as the height from the joint surface to the flat on the float bowl. This is for BS32 carbs on KZ650 F3/F4.



Hope this helps.

John S

Yes it does. Thank you!