Harley Davidson Evolution Oil Breather

As a result a fine mist of oil in the vented crankcase air condenses in the air cleaner and must be cleaned out from time to time.

Harley davidson evolution oil breather. Do a leakdown test on it. Ive read about this being a problem if they sit but I ride it a few times a week. This was done in an effort to reduce the amount of oil that gets into the air filter.

That much blowby and oil carry over is an indicator of poor ring sealing. Without a reliable Harley Sportster breather kit excess pressure cannot be vented by your pistons and recycled by the carburetor. Hial from ontario canada here.

48 out of 5 stars. While running it hard at high exented rpms will add a bit more oil to the breather box you have way way too much. From breather hose which eliminates engine oil from collecting.

V-Twin Mini Sifton Breather Bolt Kit for Harley. Rick since 1994 Harley has used what we call a head breather system in that the crankcase breathers are located in the heads. As the motor turns the oil is pumped out the case breather not sent back to the tank.

The air inside a motor is saturated with oil. The evolutionâs external filter requires two oil lines. Discussion Starter 3 May 22 2020.

The stock air cleaner assemblies forced most of the breather blow by to be recycled through the combustion chamber. Harley-davidson Timed Breathing Explained. Thats the kind of difference a new Harley breather kit can make for the efficiency and performance of your Harley-Davidson air intake fuel systems.