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2002 harley fat boy

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Old 11-06-2023, 05:30 PM
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Default 2002 harley fat boy

How much water do you get in your catch can with the external breather set up
 
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Old 11-06-2023, 07:58 PM
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I get none. That's because my DIY Breather goes up, not down, NO CATCH CAN. Gotta use some common sense. Air (crankcase pressure) is lighter than oil (crankcase air & oil mix) makes the vapor that comes out. My crankcase air goes out over the engine, under the tank & seat and drops down at the swingarm. No oil puking only crankcase air. Oil seep back down to crancase. Reroute you breather system and ditch the can.
 
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Old 11-07-2023, 02:10 AM
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There should not really be a need for any catch can at all. I run the hollow breather bolts with tiny mesh filters inside, straight to the atmosphere. There is a light oil mist on the nearby parts that I wipe off maybe once a month.

Excessive amounts of oil from the breathers is an indication something is not right with the engine I believe.

ve.
 

Last edited by SwedishMeatball; 11-07-2023 at 03:34 AM.
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Old 11-07-2023, 07:51 AM
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On big motors I get a lot.. I use a large catch tho.. It gives the venting time to cool enough for the water to condense out of the air. Couple oz. with some grey poupon on top.


 
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Old 11-07-2023, 09:28 AM
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I have a 103ci TC between 10.0 and 10.2
With static compression around 205 psi
I have a small DK catch can and between oil changes
I may get half an inch of oil in it.
 
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Old 11-07-2023, 04:11 PM
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Default 2002 Harley fat boy

I get hardly any oil in my catch can. Just a tiny bit of oil but a lot of water (1 to 1 1/2 ounces on start up and none after I ride about 20 miles) The question I asked was how much WATER does every one get? I am trying to see if I need to replace the breathers but because I get just a bit of oil I dont know if I need to change them. I am just concerned about the amount of water I get. So again I ask how much Water does every one get?
 
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Old 11-12-2023, 07:07 PM
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Default 2002 fat boy Water in catch can

Please answer my question
 
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Old 11-13-2023, 04:36 PM
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Definitely Subscribed
 
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Old 11-13-2023, 06:44 PM
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Originally Posted by gerald martin
Please answer my question
I get some water in mine too ,never measured it . usually shows from shorter rides.
 
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Old 11-13-2023, 08:00 PM
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about how much? I get about 1 to 1 1/2 ounces in the first 10 to 20 miles and then nothing at all. Do you think I need new breathers?
 


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