Crank case breather filter.

[Shane4371]

I purchased the uni pods from RPM and the crank case filter recommended to use with them.is this crank case filter really necessary?

[FJmonkey]

It keeps crap out of your crankcase. The other option is leave the hole open.

[Shane4371]

If that's all it does.that filter is over kill.js

[ribbert]

If that's all it does.that filter is over kill.js

Not entirely, it does need to breath, not just plug the hole.

What would you suggest as an alternative?

Noel

[aviationfred]

An actual purpose made breather filter may not necessarily be required.   BUT a filter of some sort is highly recommended. As Noel said, the crank case needs to be able to vent.

The crank case filter serves 3 purposes.

1. During operation the crank case builds up a slight amount of pressure. Thus, the need to vent that pressure.

2. During operation a small amount of oil will, (for the loss of a better word) evaporate through the vent opening.

3. It keeps crap from entering your crank case.

A filter of some sort....i.e. A small piece of cotton rag zip tied over the OEM vent hose without pinching the hose closed, an actual K&N vent filter or other brand of vent filter needs to be used.

Fred

[FJmonkey]

I have my breather filter tucked up between the bottom of the two UNI filters. Randy recommended this position. The air from the intake will help pull the oil vapor in just like airbox connection and you get less oil on the bike.