[zimmy]

For anyone that is having a problem with tuning of Webers on a BB FE with the 10 Deg angled manifold, I have a hint. The float level on Webers is critical to all performance and jetting. All of the data that I have seen for the float level setting for the 48 IDA is only for the carbs when they are level - not angled. The spec is given as the distance the float sticks up above the carb deck when the float tang closes the needle valve.

For the angled 48 IDAs: (When the fuel connection is on the inside of the carb: the carb is leaning towards the float pivot.)

1. Measure the height of the ball in the needle valve when the lid is inverted and the ball sits closed.

2. Using a piece of rubber tubing, wedge the float at the height that the tang on the float is at the same depth from the carb deck that you measured in step 1. (the height of the needle valve)

3. Measure the height of the float above the carb deck. It should be 4.2mm. (Not the 5.5-6.5mm that the Weber books call for)(be sure that you measure the body of the float and not the weld seam in the middle)

4. Bend the tang if necessary to achieve the desired height.

Hope this helps.