While I've been working on my ignition system I've noticed that one side of the engine compartment is covered with an oily film. After some investigation, I have found that the PSV (crankase oil pressure relief valve) on my crossflow is a very loose fit in its housing - the rubber grommet doesn't grip it at all. All the oily surfaces seem to originate from that point.

I'm going to strip the valve itself for a good clean-out (I bet it's never been done in the life of the engine) but I would like to replace the grommet that provides a seal - anyone know if these can still be bought and, if so, from where?

I'd like to get it working properly, as the only alternative is a catch tank and I'm not sure I want one of those yet (I know I'll forget to empty it).

cheers,
David

I think I know the part you mean; mine was loose so I put some bicycle inner tube over it. you need narrow innner tube as found on racing bike wheels.

question I ask myself is how will it last when subjected to oil and what would happen if it falls apart?

frist question I don't have an answer for but or the second, hopefully it drops into the sump and stays there or else is too big to pass through the oil pick up strainer.

David

I had a similar problem (my PSV grommet was actually torn). My grommet was a common size (I found a replacement in my assorted grommet selection box) but after stripping I found my valve to be faulty.

After sourcing another valve (off a very helpful member on this forum) I found that the new valve as slight larger (in dia.) and my new grommet did not fit! Luckily the original owner sent me the matching grommet and PSV can.

I think vulcan engineering still sell them
( i know they do a nice shiny alloy one for a pinto..)
http://www.vulcanengines.com