I can't see a sensible way of doing it -- if you're blowing that much oil, you need new rings! One of the Japanese firmsdoes catch tanks with seperators (to prevent oil causing detonation) but these have no "return to sump" option. Frankly, I'd not want blow by oil re-entering the sump!

I can't think of any sane way of doing it. Sorry. A tap on the catch tank attached to a length of hose?

Emma's car (the yellow Cinq) had an extra breather from the sump:

You see, I am not blowing oil, it is mostly water that I get in the tank with deposits of oil, the mixture that comes out of this is pure filth (and tends to freeze solid in subzero temperatures). So, I would like to make it so that whatever oil tries to get out of the breather comes back to the sump, the rest I allow to be sucked into the the inlet. What I do not want is to have truck loads of mayo in my breather pipes. And no, I would not worry about my rings (or, to put it differently, if they are not ok, then I am not bothered at all, I will look for a new car).

I have fitted a sump breather too...

I'd have no problem with the blow by oil heading back into the sump, especially with frequent oil changes. I'd much rather this than having the stuff all over the inlet and plugs, which most manufactures seem to think is ok, at least on N/A anyway...

by the sounds of what your all saying it should be impossible for my car to run for long without the plugs, pipes, IC etc getting filthy with oil. I promise you i'm not lying when i say i have no mayo in my cap or breather pipe, my IC isn't full of oil and my TB is as clean as the day i fitted it (was brand new). Clearly there is oil vapours going through it all, which the lovely film of oil i get on my rocker cover beneath my dump valve proves.

I know i'm not helping here and i'm not saying anyone should do it like my car, i don't intend to leave it like that, i have a catch tank somewhere which will probably fit in the bay now i don't have the AC fitted. Just that i don't think its as bad as people think to just stick it straight the inlet - 41k miles of mostly trouble free motoring suggests to me the car runs pretty good considering its spec and lack of fuel control etc.

Woj, just out of interest whats the capacity of your catch tank and what sort of mileage can you do before its full up?

The capacity is half a liter, which is not much I know. I need to empty it twice every winter, spring/summer is not an issue. I believe that you are free of problems like that because of these possible reasons. (1) you don't drive in winter, (2) if you indeed do, then you do proper trips when you warm up the engine and give a good blow through, (3) you do have the christmas tree fire defender in the pipe that makes things better. Regarding the oil film - you see before the first winter I did not have even that (there was no catch tank), but the IC started collecting filth in the meantime, and early spring I started getting stains/drips through the BOV. And when I clean things up I am all set for the whole warm wheather period.

My sin is also my car usage pattern - it is either long distance trips, or 5km trips that when cold the coolant gauge hardly springs to life. If I would be doing 30km to work every day things would be different.

And the promised thing about t-jet breather in the attachment.

so yeah, its very rare for me to use the sei during winter and it never does little trips - i'd use the alfa for that

That separator sounds interesting though, but either my physics knowledge isn't up to understanding how it works properly or i've not been awake long enough. I'm not seeing how it prevents water/water vapour getting back into the oil when it returns the oil back to the head. Clearly it can't let much if any water in or the service intervals for a tjet would be alot shorter...

I can't see how it works, either -- presumably some kind of loss of pressure caused by the funnel thingy

Seems way OTT, BWTH.

My own thoughts are -- oil mist in inlet mani is a bad, bad, thing: it's a well known cause of detonation and a destroyer of turbo engines. Water vapour is no big deal. Mayo is unlikely to travel that far unless you forget to empty the catch tank.

Capacity is important (obvious place for the catch tank is where that battery -- or the battery tray -- used to be), but so is shape. deeper is probably better. Imagine a deep, thin, tank divided by a perforated sheet, tiny holes at the top, big ones at the bottom. The input side of the tank (one pipe from rocker cover, one from sump) is filled with stainless or bronze wire wool -- hell, Aldi pan scourers would do just fine -- (which also acts as a flame trap -- I don't like crankcase explosions.........) . The outlet side goes to the inlet manifold. There's some kind of sight glass and a simple tap at the bottom connected to a long thin tube which exits the bottom of the car where the owner can place a drip tray from time to time.
Tap can be a T with a bolt to seal at one junction if I can't work out how to make a tap like you find on school lab chemical apparatus.

Gas welded aluminium (yes, Martha, you can gas weld aluminium) would be the material of choice, but
stainless or TIG would be OK.

Such a set up would please both the MSA and the MOT man.

Thats essentially my plan but my catch tank will be over behind my passenger headlight (its the only little gap). I just want to get a small fitting tapped into the bottom of it with a tapped pipe so i can regularly just open the tap to empty it from below the front bumper. Then i will only have to actually take it out very rarely to clean it inside.

I keep seeing cars with really cheap oil catch tanks, ones like this jobby, http://www.ebay.co.uk/itm/Universal...arts_Vehicles_CarParts_SM&hash=item3a7612c894. I bought one just for my own curiosity as they are soooooo cheap. It is just an empty pot! Surely this will do nothing at all!?! It is predictably really rubbish quality too.

blu73 said:

Thats essentially my plan but my catch tank will be over behind my passenger headlight (its the only little gap). I just want to get a small fitting tapped into the bottom of it with a tapped pipe so i can regularly just open the tap to empty it from below the front bumper. Then i will only have to actually take it out very rarely to clean it inside.

I keep seeing cars with really cheap oil catch tanks, ones like this jobby, http://www.ebay.co.uk/itm/Universal...arts_Vehicles_CarParts_SM&hash=item3a7612c894. I bought one just for my own curiosity as they are soooooo cheap. It is just an empty pot! Surely this will do nothing at all!?! It is predictably really rubbish quality too.

Click to expand...

That'll be fine with a bit of wool or scourer in it. Mine is just one of those with both my breathers plumbed in and an extra fitting for a breather filter. I'm not plumbing back onto the inlet as l don't have an MOT to worry about. ;-)

I think i need to move to Jersey lol..

blu73 said:

I think i need to move to Jersey lol..

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Well, the weather is nice, but isn't there a 40mph speed limit everywhere, or is that the other Channel Isle?

fingers99 said:

Well, the weather is nice, but isn't there a 40mph speed limit everywhere, or is that the other Channel Isle?

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The speed limit is 40 but France is an hour on the ferry ;-)

very quiet woj... are you still there?

Nothing to report on, though I made some arrangements in some matters

just checking you and the car are still with us

Quit sun bathing and get this breather mod on the go.

I acquired a breather from t-jet indeed. The problem is that it won't fit under the bonnet, there is no way. Besides, I had other problems with the car, was doing the complete front brakes (once I took the pads off I saw how badly they had to be done) and I snapped one of the bolts holding the caliper bracket to the hub :bang: It is all sorted now, but a 30 minute job turned into a 1.5 day scrappy rally.

But, I have another ECU project cooking up And "another" belongs to ECU rather than the project :devil:

Hmmmm, do I smell an EMU or are you planing to re-engineer another Fiat contraption.

Hooking up EMU is not a project in my dictionary, only a re-wiring nightmare. If that answers your question