Rocker Cover Breather

[slowthing]

I wish to replace the tin cover on my Vitesse 1600 with a polished alloy one. Currently the breathing seems to come from a 'mushroom' shaped oil filler with mesh in it. The new cover just has an oil filler cap although there is a pipe outlet on the side. I'm guessing this is to provide the breathing functionality. Whats the best way of setting this up? Vent to a catch bottle or some kind of filter etc.

Thanks.

[Elma fud]

a lot of people use catch tank because it stops the valves and plugs getting oiled up, as you generally get more vapour from older engines.

[slowthing]

So a catch can connected directly to rocker cover would suffice? No vacuum needed from inlet manifold ( mine has no provision for vacuum take off).

[RobPearce]

Well, ideally you'd want a little bit of vacuum, but letting the catch can vent to the air filter box would be enough.

[Pete Lewis]

depends on the vintage of the 1600 but you may find the alloy has breather which will foul the header tank, had to plug the tubed outlet and fit a filter or breather tube to the N/S

you cant vacuum a 1600 as the crankcase has its own   tubular open breather next to the fuel pump

if you fit a spin on filter you need to re make this to get the spin on to fit

pete

[RobPearce]

Quoted from Pete Lewis

you cant vacuum a 1600 as the crankcase has its own   tubular open breather next to the fuel pump

The early 2L engine is the same, but has a vacuum (mushroom breather thing). All they did was remove the tube and fit a blanking plate (of which I have a spare if anyone wants it). So you can "vacuum a 1600" if you want to.