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breather removal

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Old 06-17-2012, 07:19 AM
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Default breather removal

i have a 89 flht is there a relocation for the crankcase breather so i can stop oil misting all over my bike
 
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Old 06-17-2012, 07:33 AM
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Run the hose down along the frame and outboard of the tire.

Make sure the oil level in the tank is not too high, if it shows full on the dipstick, it is probably overfilled by about 1/2 quart.
 
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Old 06-17-2012, 07:57 AM
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I disagree with Dan. It is a motor breather and should be in as clean a area as possible. Under the bike will not only be dirty but also wet.

Raise it as far as possible as it was stock. This gives the oil a chance to run down the tube and not hit the filter.
 
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Old 06-17-2012, 08:15 AM
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Originally Posted by 89 FXRS
I disagree with Dan. It is a motor breather and should be in as clean a area as possible. Under the bike will not only be dirty but also wet.

Raise it as far as possible as it was stock. This gives the oil a chance to run down the tube and not hit the filter.
You may disagree, but this method is used by thousands of people without a problem. No, you do not want the opening as high as possible, you want to prevent an oil buildup in the hose.

If the hose is up high, any water that gets into the hose is going right down into the crankcase...

Nothing gets sucked into the breather hose when it is low, and no filter is needed on the end.

This setup has worked for me for several hundred thousand miles without problem.

This is the way the factory set up the breather system, before EPA requirements made them route the breather into the intake of the engine.
 
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Old 06-17-2012, 08:30 AM
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Originally Posted by Dan89FLSTC
You may disagree, but this method is used by thousands of people without a problem. No, you do not want the opening as high as possible, you want to prevent an oil buildup in the hose.

If the hose is up high, any water that gets into the hose is going right down into the crankcase...

Nothing gets sucked into the breather hose when it is low, and no filter is needed on the end.

This setup has worked for me for several hundred thousand miles without problem.

This is the way the factory set up the breather system, before EPA requirements made them route the breather into the intake of the engine.
Well then I stand corrected. Personally I placed a PCV valve on my breather and still run it inyo my air filter. The filter area gets a little dirty but nothing I can't handle.
 
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Old 06-17-2012, 08:49 AM
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The reason that dirt and debris does not get sucked into the breather hose is that the engine has a breather valve in the cam chest, the valve opens as the pistons move downward, allowing the pressure to escape from the crankcase, but as the pistons move back up, the valve closes, so there is no suction on the hose to draw anything in.
 
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Old 06-17-2012, 09:48 AM
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Mines vented to a chrome breather mounted just in front of the rear floor board.
http://www.jpcycles.com/product/400-538
 
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Old 06-17-2012, 10:57 AM
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thank you all for the help this is what i was thinking just wanted to double check, it such a pain in the *** to keep wipe down my bike from oil
 
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Old 06-17-2012, 12:06 PM
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look at the breather on mine.... i open the valve on the bottom each morning to let it drain a bit of water... over time, oil mist builds in the canister and that'll drain, too
 
Attached Thumbnails breather removal-bike.jpg  
  #10  
Old 06-17-2012, 01:57 PM
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Here is a pic of my setup, the transmission vent hose and crankcase breather hose.

Couldn`t be and simpler, requires no maintenance.
 
Attached Thumbnails breather removal-vent-hose-routing-89-small-.jpg  


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