Harley Davidson Evolution Oil Breather

Discussion Starter 3 May 22 2020.

Harley davidson evolution oil breather. What causes that is the oil that was in the oil tank has passed through the oil pump into the cases. It is critical to maintain the proper pressure in your Harley-Davidson Sportster engine. In earlier case breather model engines the oil would pour into the air filter if the bike had been sitting for a few months.

From breather hose which eliminates engine oil from collecting. Ive read about this being a problem if they sit but I ride it a few times a week. The bottom arrows are pointing to the vent that goes to the breather bolts.

Its almost like a whole new engine. Top breathing engines breath or vent through the top breather bolts which are threaded into the heads of a Harley Davidson motor. 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.

More efficiently by promoting unrestricted breathing. Hial from ontario canada here. My question is i have a 07 roadking with 11000 miles on it and iam getting oil in my breather.

The air inside a motor is saturated with oil. Your Harleys engine power will get a quick boost when you upgrade with one of JPs efficient state-of-the-art Harley-Davidson air breather kits. Timed breathing was introduced on the.

Rick since 1994 Harley has used what we call a head breather system in that the crankcase breathers are located in the heads. Oil level is right where it is suppost to be half way on the dipstick when coldany ideas of why this is happening and any dyi fixesthankyou. In the following drawing the top arrows are pointing to the oil return oil.