Re: TR6 - crankcase breather

["Chris Kantarjiev" <cak@godzilla.studio.sgi.com>]

The emissions control systems varied a lot over the years - check your workshop
manual to see if the car actually *wants* a PCV valve. I know that later MGs
were plumbed with a gulp valve and no PCV, because the vacuum/breather went
into the air filter rather than the manifold.

But if the item in question is a sort of funnel shaped affair with a cover
that's held on by a wire bail, yes, it's a Smiths PCV valve. Open it up and
you'll find a spring loaded rubber diaphragm. I don't think you can get rebuild
kits any more, but a few years back (last time I needed to look) the whole
assembly was available for about $20.

The charcoal canister is usually plumbed so it sucks fresh air *in*, not blows
out, by the way...