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Matt,
I also have a sealed carb box designed for an RV-4. My carb inlet is on the bottom. The original design had a spring loaded door on the bottom of the box that would open to warm engine air in case the inlet was jammed from ice, water or whatever. I did not install this spring loaded door. 3 years ago, when I installed the carb air box, I also drilled a 1/8" hole in the bottom back end of the box for water to escape. As you are, I was always afraid that the water could build up in the air box and flood the carburetor. After 3 years of flying, sometimes in extremely heavy rain, I am now satisfied that the small 1/8" whole is enough to stop rain water from causing a problem.
If you wanted to test on the ground, you could use a garden hose.
Lorn
From: Matt Reeves <mattreeves@yahoo.com>
Date: November 11, 2007 7:03:45 PM GMT-05:00
This makes me a little more comforted, but if I have a sealed system with nowhere for the rain to escape, it almost seems rain can collect in the carb and I always thought one drop and the engine quits.
Maybe I'm just being a little paranoid but how does the rain get out? Should I drill some holes in the bottom of my fiberglass airbox?
Matt
--
Lorn H. 'Feathers' Olsen, MAA, DynaComm, Corp.
248-345-0500, mailto:lorn@dynacomm.ws
LNC2, FB90/92, O-320-D1F, 1,300 hrs, N31161, Y47, SE Michigan
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