Float level = Gas Grade ????

[adot]

912 handbook, pg159, bah bah bah , then quote the book "This makes it possible to quickly adj. the float lever for the particular GRADE of gasoline used"

Float level and grade of gas ????

Tell me more, I dont get it.

[Duke]

Could it mean the higher the grade of gasoline the lower the float level can be? Never heard of this before. I have always adjusted mine using the 912 Solex float level gauge which screws into the main jet carrier hole. Not something you have to do very often.

[WFBowen]

Adot:
This is from the 76 Racing Fuel Guide......

"How do we know if the carburetor calibration for the old gasoline is okay for the new gasoline? If it is not okay, should
it be richer or leaner? To answer these questions, we need to know the specific gravity (SG) of the gasoline. Most
racing gasoline suppliers have this information available in their literature. SG is a measure of how heavy the gasoline is
compared to water. If a gasoline has an SG of 0.720, this means that it is 72.0% of the weight of water. The higher the
SG number, the higher the float sits in the gasoline. This shuts the fuel flow off earlier at the needle and seat thereby
providing a lower liquid level in the float bowl. With a low liquid level, there is not as much pressure from the “head of
gasoline” to help get the fuel moving through the jets with a given air flow when compared to a carburetor with a higher
liquid level. The height of the liquid level is important and should be maintained the same for each fuel used. That is
what the sight hole in the float bowl is for."

[h.beard]

Duke,
And where can I purchase one of these 912 Solex float level gauges? Howard

[Duke]

I believe Pelican has them or Performance Products. They are not cheap though.