Questions? Looking for parts? Parts for sale? or just for a chat,

The WD Motorcycle forum


WD Motorcycle forum
Start a New Topic 
Author
Comment
M20 crancase breather pipe route

Where should the M20 engine breather pipe be routed? Thank you in advance.

Scott D

Re: M20 crancase breather pipe route

It goes down behind the inner primary cover in a fairly gentle curve and is clamped to the gearbox mounting plate with a 'P' clip...It exits onto the road just below the plate...Ian

email (option): ian@wright52.plus.com

Re: M20 crancase breather pipe route

Ian
Does this position give any problems with oil misting onto the rear tyre?

Re: M20 crancase breather pipe route

I've never experienced any...The pipe passes very little oil under normal conditions....Ian

email (option): ian@wright52.plus.com

Re: M20 crancase breather pipe route

I have had a couple of WD M.20s where the crankcase breather pipe had a small hole drilled in it roughly in line with the gearbox sprocket and assumed this was top deliver oil mist to the rear chain and no I have never had any issues of the oil mist on the rear tyre.

Re: M20 crancase breather pipe route

Thanks folks, I figured BSA would've got that right.
Back in the day I owned a 650 twin Yamaha. Its engine breathers exhausted directly in front of the rear tyre.

Nieuwe pagina 1