Breathers
Posted: Sat Oct 24, 2026 11:06 am
There is plenty of info here about breather systems but none seems to cover my set up. This leads me to believe it is not 'original' but I'd like to know whether it is doing the job adequately.
1098 engine, 1275 head, standard carb.
I have a standard metal pipe running from the tappet chest cover to the flame trap (fitted with a new scouring pad) and from there a rubber pipe runs to the air filter casing entering it between filter and carb. There is also a vented oil cap.
There is no breather pipe on the rocker cover and no provision for a valve on top of the inlet manifold.
Would this be described as 'OK'?
1098 engine, 1275 head, standard carb.
I have a standard metal pipe running from the tappet chest cover to the flame trap (fitted with a new scouring pad) and from there a rubber pipe runs to the air filter casing entering it between filter and carb. There is also a vented oil cap.
There is no breather pipe on the rocker cover and no provision for a valve on top of the inlet manifold.
Would this be described as 'OK'?