How Long Does it Take the Gas to Evaporate Out of Your Holley Carb?

[patrickt]

Originally Posted by 1795

Patrick,

It would be interesting, if you have the time, to take a look at fuel level in your carb every other week until you can get it back out on the road to get an idea on how quickly it evaporates. I never checked mine with the ERA. I will check with the race car when it is built, as there will be weeks in-between races.

Hmmm, I wonder how I would do that.... Probably the best way would be to take out one of the bottom screws from the bowl and catch all the fuel that comes out. Pour that in to a graduated cylinder, put the bolt back in and pour the gas back in to the vent. Then repeat. Of course, the really easy method would be to just get a mayonnaise jar, fill it up to about the height of a sight plug, punch a hole in the lid about as large as the vent tube, stick a short run of surgical tubing in there, then punch two more little bitty holes in the top to mimic the well and bleeds, and then just put it on your garage floor and watch it.