Crankcase breather

[nb1914]

My xs650 engine has the smaller breather installed, someone in the past has snapped off the outlet. The PO was obviously just running it open i.e. no pipe/filter. I plan to drill out where the outlet has snapped in the cover and then simply push fit a suitable pipe in, as i see it making the outlet larger shouldnt cause any issues or is a certain size required to provide some back-pressure ?. I would prefer to install another cover but they seem quite scarce in the UK.

 

[Michaelo]

its a breather and treat as such (as long as you don't restrict), I personally cannot see it being an issue, I've routed mine onto the top of the chain which did provide some blow by oil but now its pretty dry....

 

[nb1914]

its a breather and treat as such (as long as you don't restrict), I personally cannot see it being an issue, I've routed mine onto the top of the chain which did provide some blow by oil but now its pretty dry....

Thanks ill just use a long pipe and route it downwards somewhere

 

[Michaelo]

You can do that, try to keep the pipes od as small as you can, off centre down the frame and out. Out being away from the rubber......dripping oil, wet road, big rubber "go arounder" could lead to disaster.....
I did have a fair bit of oil coming from my top end before re build, it was one of the reasons I did the build, eliminating all oil leaks......