crankcase venting
Discussion
You could, but I wouldn't consider it a very good idea. You should at the very least direct it to a catch tank otherwise you're going to p!ss oil all over your engine and exhaust. You will of course be destroying the planet with the extra emissions, but the engine may run slightly better under power since it won't be burning the crud from the crank case. Enough to matter? Not for most people, I would say.
[quote=GreenV8S]You could, but I wouldn't consider it a very good idea. You should at the very least direct it to a catch tank otherwise you're going to p!ss oil all over your engine and exhaust....
i dont know... the above vette engine is having two of those venting parts and i never get any oil messing, even if you can see plenty of 'air' venting from out there, specially under heavy load...
i dont know... the above vette engine is having two of those venting parts and i never get any oil messing, even if you can see plenty of 'air' venting from out there, specially under heavy load...
Pasco said:
I seem to recall the Muppet known as Clive f has put a small filter on his rocker cover for venting purposes, perhaps he will post a pic for you Panic 
How's the weather for you today ?
Pasco
Pasco, weather 'here' in northern spain (where i live at the moment) is fine, fresh, crispy and sunshine...How's the weather for you today ?
Pasco
The fact that it's blowing out enough oil to get the inside of the plenum dirty says to me that there is enough oil coming out to be a problem if you just dump it out of the rocker cover. But it's your engine at the end of the day, so try it if are feeling brave. Just be aware that oil on a hot exhaust is a recipe for fire, and it will be rather harder to clean off the outside of the engine than the inside of your plenum. (Is the oil on the inside of the plenum really *that* much of an issue?)
If you don't want it going into the plenum then IMO a catch tank / separator is the correct solution. But unless you have an unusual engine or something wrong with it I wouldn't expect the existing positive crankcase ventilation system to cause any trouble.
If you don't want it going into the plenum then IMO a catch tank / separator is the correct solution. But unless you have an unusual engine or something wrong with it I wouldn't expect the existing positive crankcase ventilation system to cause any trouble.
spend said:
panic said:
Boosted LS1 said:
Why don't you want to vent it into the inlet tract?
Boosted.
because it makes a mess into my carbon plenum at the airmeter side...Boosted.
Dave
Edited by panic on Saturday 22 September 16:47
The shiny thing in your picture looks like a flame trap not a filtered vent. It's designed to be connected via a breather system to the intake manifold, and the flame trap is there to stop any backfires in the intake from igniting the flammable mixture in the crank case. The filtered breathers you refer to sound like the filtered vents designed to allow air *in* to the crank case when you are using positive crankcase ventilation i.e. your existing setup. You should find that you already have a filtered vent, probably on the opposite corner of the engine from the flame trap. The filtered vents don't do the same job as a breather and are not designed to work as breathers. Try it by all means, but I suspect all that you would achieve with one of these is that the oil currently messing up the inside of your plenum will end up turning the vent filter into a sticky mess )quickly blocking it up) and then dripping over the rocker covers onto the exhaust.
If you want to get rid of the PCV system you need either a hose taking the breather gases away from the engine to somewhere that they can be allowed to drip safely onto the road, or (better) into a catch tank + separator where the oil and water can be removed leaving the gases to vent to atmosphere. I still find it hard to believe there's enough oil coming out to be a problem unless there's something else going wrong.
If you want to get rid of the PCV system you need either a hose taking the breather gases away from the engine to somewhere that they can be allowed to drip safely onto the road, or (better) into a catch tank + separator where the oil and water can be removed leaving the gases to vent to atmosphere. I still find it hard to believe there's enough oil coming out to be a problem unless there's something else going wrong.
Pasco said:
I seem to recall the Muppet known as Clive f has put a small filter on his rocker cover for venting purposes, perhaps he will post a pic for you Panic
How's the weather for you today ?
Pasco
I have a filter attatched to the breather on the nearside rocker cover, but the off side is still attatched to the inlet manifold, otherwise, as peter says, you`ll have all sorts of problems.How's the weather for you today ?
Pasco
clive f said:
which side are you refering to?
the off side has a threaded hole to take breather filter, which is pretty big, around 25mm, but will be imperial thread, the nearside has a small pipe protuding from it for the breather, which I think is around 5-6mm diam.
any use?
yes, good info, thanks.the off side has a threaded hole to take breather filter, which is pretty big, around 25mm, but will be imperial thread, the nearside has a small pipe protuding from it for the breather, which I think is around 5-6mm diam.
any use?
If you want the crankcase gases breathing out into the bonnet space, make sure they cannot leak into the cabin. There are some real nasties in there!
My bruvs kit car has such breathers - if you drive it hood up, you have sore eyes and a sore throat for a few days afterwards. Not nice...
Neil.
(Griff 500 with a leaking radiator)
My bruvs kit car has such breathers - if you drive it hood up, you have sore eyes and a sore throat for a few days afterwards. Not nice...
Neil.
(Griff 500 with a leaking radiator)
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