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The filter gets saturated and drips. Why not put the hose and filter to the top, so any residual oil drains down the hose back into the motor?
Have done it before and its better. Now I use a catch can, better yet.
If the vent system is working properly and routed up to a catch system I would think I would get just as filthy as routed down.
Think of the Harley motor as a very big air pump. Even with zero blow by (ring leakage) the pistons are moving a large amount of air up thru the top end and pulled back to the bottom end with every stroke.
If the vent system is working properly and routed up to a catch system I would think I would get just as filthy as routed down.
Think of the Harley motor as a very big air pump. Even with zero blow by (ring leakage) the pistons are moving a large amount of air up thru the top end and pulled back to the bottom end with every stroke.
Gravity, my friend!
Most of it is vapor, which condenses back into liquid, and the liquid goes down hill!
I only speak from experience, and what works for me.
OP - I like what you did with those shells there, very cool
Originally Posted by Dynaglide92
Those little filters get clogged quick. I removed mine and now run the lines below the frame👍🏽
x2 - I had a filter clog up under the frame there and burst the lines off the T fitting. Filter under the AC cover just put oil on the side of the bike and my pant leg. No more filters on any of my bikes. Catch can is a nice alternative solution that I may incorporate one day if needed.
Here’s a clean and simple setup I recently did with my Fuel Moto backplate:
Gravity, my friend!
Most of it is vapor, which condenses back into liquid, and the liquid goes down hill!
I only speak from experience, and what works for me.
Yes gravity but also a potential column of oil in the vertical tubes creates positive pressure.
Open line, just stick your finger under tube while she's warming up, should be air and a little condensation coming out.
If it's blowing oil, go to step 2.
Just got the breather/catch in and connected, spiffy little thing! I was thinking of making something myself but I certainly couldn't have come up with something of this quality!
Yes gravity but also a potential column of oil in the vertical tubes creates positive pressure.
While I do understand your logic, it will never have a column of oil in it, and if it does, you got other problems.
From many different bikes I've had:
I have had them in the AC, and oil always drips at the bottom.
I have had them down to the little filters, and they get wet and drip.
I have had a hose down to the ground, it drips.
Now I have it go up, then down to a catch can, which I empty a little out at oil changes. So far my favorite.
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