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Hey all. New to this forum and motorcycles in general. I was replacing my air filter today and noticed a port in the bottom of the air box that is open. It looks like it can let unfiltered air into the engine which doesn't seem right. Should this be connected to anything? I looks like a drain port because it is at the lowest point in the air box.
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Nathan
KD9ARL
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1978 XS1100E
K&N Filter
#45 pilot Jet, #137.5 Main Jet
OEM Exhaust
ATK Fork Brace
LED Dash lights
Ammeter, Oil Pressure, Oil Temp, and Volt Meters
Green Monster Coils
SS Brake Lines
Vision 550 Auto Tensioner
In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.
Theodore Roosevelt -
That's exactly what it is. It's supposed to have a small filter on it but they usually get lost over time.
I just put one of those plastic push in fasteners like cars use to hold plastic covers on, like under the dash. It allows the airbox to drain but keeps the majority of crud out. I'm not sure if you can get any kind of filter for it unless you make somethingGreg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.
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Thanks guys. I will find something to stuff in there but still let the gas drain out. When I took the air box off it was a little gassy but not bad.Comment
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There should be no gas in there at all. If there is, you have a float level wrong/faulty on one of the carbs which is allowing fuel to overflow through the air intake of the carb and into the filter box. A slightly sticking float/float needle will cause this, as will a badly adjusted float height. There really shouldn't be any fuel dripping or draining out of that port.
Incidentally, any airflow through the port you described is pre-filtrationLast edited by James England; 02-11-2012, 02:21 PM.XS1100F 1980 European model. Standard. Dyna coils. Iridium plugs. XS750 final drive (sometimes). Micron fork brace. Progressive front springs. Geezer regulator/rectifier. Stainless 4 into 2 exhaust. Auto CCT (Venturer 1300) SOLD. New project now on the go. 1980 European model.Comment
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Greg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.Comment
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Are you sure? There's the air breathing snorkel that goes under the seat, facing backwards... doesn't that lead to the inside of the filter, on the other side of the port referred to? ie unfiltered air side? I might be suffering from false memory syndrome here or guilty of misinformation....... please advise...Last edited by James England; 02-11-2012, 04:26 PM.XS1100F 1980 European model. Standard. Dyna coils. Iridium plugs. XS750 final drive (sometimes). Micron fork brace. Progressive front springs. Geezer regulator/rectifier. Stainless 4 into 2 exhaust. Auto CCT (Venturer 1300) SOLD. New project now on the go. 1980 European model.Comment
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The air travels through the snorkle to the inside area of the filter and flows outward. The opposite of an automotive filter.
The drain hole is just below the airhorns of the carbs on the outside of the filter.Greg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.Comment
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I concur BA80. I will look into the carb work to fix the gas issue. Might be getting over my head though. Thanks.Comment
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Yes, I was aware of the flow etc but, from my obviously poor memory, I thought the port was in the centre of the airbox, ie opposite the entry of the snorkel into the box and therefore on the unfiltered side of things. Mea culpa.... thank heavens someone knows what they're talking about...XS1100F 1980 European model. Standard. Dyna coils. Iridium plugs. XS750 final drive (sometimes). Micron fork brace. Progressive front springs. Geezer regulator/rectifier. Stainless 4 into 2 exhaust. Auto CCT (Venturer 1300) SOLD. New project now on the go. 1980 European model.Comment
PRE- what filtration? The air in that cavity goes directly into the carbs.
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