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Old 02-05-2004, 03:58 PM
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Default Valve Cover Breather Hose

Does anyone know what the internal diameter of the hose that comes off a typical BBC valve cover breather is? This is the hose that runs from the breather to the flame arrestor. Help . . .
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Old 02-05-2004, 04:00 PM
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3/8" seems about right.
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Old 02-05-2004, 05:19 PM
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Im pretty sure it is 1/2" I.D. At least for the Mark 4's it was.
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Old 02-05-2004, 05:35 PM
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5/8" for mine.
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Old 02-05-2004, 05:57 PM
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Old 02-05-2004, 06:02 PM
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Either that or 9/16 OSO, the place to come where any ole answer will dooo
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Old 02-05-2004, 06:49 PM
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Is 7/16 still available?
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Old 02-05-2004, 07:15 PM
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hehe just went out into the snowstorm and measured mine, they are 1/2". from 7.4 valve covers, little plastic elbows. If somebody has 3/4, they probably have too much blow-by.
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Old 02-05-2004, 07:46 PM
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Originally posted by formula31
hehe just went out into the snowstorm and measured mine, they are 1/2".
small balls!
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Old 02-06-2004, 08:12 AM
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I think 1/2 is the score . . . and thanks for the effort in the snowstorm. Does anyone have a clue where a guy could get some of that nifty stainless steel looking hose (or hose sleeve) and ends to make the breather hoses look sano? I am running out of things to occupy my mind as I slosh through the snow in my one horse open sleigh . . .
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