How Long Does it Take the Gas to Evaporate Out of Your Holley Carb?
Well, I don't know the exact answer to that question. But, I can tell you that the answer is "less than three months." I know this because three months ago was the last time I drove the Cobra, and I decided to check the bowls this last weekend. Both bowls were bone dry. I filled them up through the sight plug holes, as warm weather (I think) is just around the corner. :)
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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. |
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Patrick,
Think yourself lucky. My dual quad QuickFuel custom carbs drain down into the engine within a few hours!:CRY: After spending most of last season stripping the carbs and replacing the gaskets I finally found the root cause - the main bodies are porous! Obviously poor quality castings from the far east...........:mad: Now trying to sort the problem out with my engine builder but apparently Quickfuel were bought out by Holley a few years back and since then they have become unresponsive to supporting customer problems:eek: |
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Check the power valve Patrick...
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I can't help you with a Holley, but I can tell you that my Edelbrock will be empty in 10 to 11 days pretty consistently. I have a Schrader valve just under the fuel filler neck that I use to put 1-2 psi air pressure to the fuel tank for a minute or so to fill the carb when I haven't driven for a while.
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I don't know about bone dry but my Corvette has to be primed after a couple of days. It has a 60s era bowl vent in addition to the throat vent so it gets cross ventilation to speed up drying out.
My GTX Edelbrock does a bit better - maybe 5 or 6 days before I have to prime. Carters and Edelbrocks have a pretty big fuel bowl vent. My ERA with 600 Holleys seems to do the best. It's probably good for a week to 10 days. They probably aren't bone dry at these periods, just too low to charge the accelerator pump and pull fuel in during initial cranking. After that the amount of throttle pumping and cranking get too excessive for me to bear and I prime the front bowl until I see fuel drip out onto the throttle blade. |
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Fill the bowls with the pump. Drain the bowls into a cup. Measure how much comes out. That way you know how much to put down the vent to refill. Easier than removing the sight plugs.
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Patrick, maybe you can design an Accusump style device for the fuel system. |
I just use one of these to pour fuel in through the vent tubes until the bowls are full.:cool:
[ame]https://www.amazon.com/gp/product/B002FCJD36/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1[/ame] http://i1294.photobucket.com/albums/...psicdv5taa.jpg |
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Bernica, you need to step up your game....
Bernica, if you want to step up to what the pros use, I just might be able to get you what I have.... Yes, it's a condiment bottle from Bob's Big Boy with a piece of surgical tubing jammed on the top. Note, however, that it is carefully labeled as to its contents. It don't get no better than this.:cool:
http://www.clubcobra.com/photopost/d...bottle_001.jpg |
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