Mickey,
a lot of old motorbikes had breathing problems and by bringing the tube up higher allows the air/oil mix to slow down a bit and the blown over oil has time to catch on the sides of the tube and then work its way back down into the crankcase.Motorbikes have used this method for a hundred years. This is only a bodge to help extend the life of a dying motor in your case. The problem with the breather hose going into the air filter is that the negative pressure in there only increases the desire for the oil to be carried over into the carby. You have nothing to loose and worth giving it a try. And then you could also fit a catch can to catch the blown over oil and allow it to drain back into the motor but that is probably going a bit overboard..
Last edited by NormK; 27/09/19 09:53 AM.
