Hello.
I have a problem with crankcase breather reaching the engine block to the original air filter. The breather hose has plugged in oil catch tank (hidden in front of a radiator at a height of a front bumper).
With a more dynamic driving the tank fills up quickly with oil. I have a standard air filter box, filter is K&N. Engine is 4x4 standard with no modifications. Oil is 15W50 Motul.
It looks as if the oil was literally sucked out by breather hose. After a ride of about 70km (including of highway driving at speeds up to 200km/h over short distances) it had sucked out from the engine of 0.5 liters of oil (almost a full catch tank, oil filter flooded with oil, air filter box the whole dirty with oil).
During the delicate driving everything is in order. I drove about 400km highway distance before with average low speed (about 100-120km/h) and everything was ok.
I checked the compression pressure on cold engine after a week of inactivity and it shows:
10.0—10.0—10.5—10.2
Could anyone help me, what would be the problem? I'm totally lost.
Is the engine completely outworn? (it accelerates well, doesn’t smoke blue when starting cold. There is no oil in coolant. The engine is not loosing the coolant.)
Even if the engine almost had no rings and was totally finished off, is it possible to draw 0.5L oil by breather on 70km distance? Would it be a typical situation?
What and how should I still check?
Thanks in advance for any help.

ps. sparks (DENSO IK20) looks like this:

 

Anybody, please?

 

What breating system do you have?

 

well... it's like orignal. Only a simple cath tank is plugged in series to the hose going to airbox.

 

Loose the original set up all it does is cause more issues.
engine needs to breathe from the kidney box to a suitable separator and a return to sump ideally under the oil level.
I use a bailey set up which works fine on mine with 2.3 bar of boost.

 

I use ggr 3 ports breather, breath from both side of block and use the oe return to sump below oil Level. Kidney box is removed and a hose nippel is mounted

 

I have a question about engine condtion.
I've made a silly test (don't laugh at me ), but maybe it could show something?
I just wonder if piston rings are scrap?
Is it possible to tell anything about engine condition watching these clips?
1. a silicone glove is on the dipstick tube, the breather hose is "opened" and the oil filler cap is twisted on:
2. breather hose is "blocked". On the oil hole there is a glove and dipstick tube is being closed and opened alternately
3 as above, but breather hose "opened" (connected to airbox)

 

....by the look on plugs they are too white..what boost you are running,,...
btw..you could open the exh side bottom cap so the engine will breathe from there also..

 

mine was the same as yours, although it just came form the kidney box to a catch tank, it literately threw oil out.

Ive fitted this setup :



NOTE - the fitting going into the block on the exhaust side is a 3/8 NPT thread !!

so theres a outlet either side of the block which returns to the sump under the oil level, then any thing that can will travel up to a separate catch tank.

On hindsight, if i was to do it again i would spend the money and just fit a wrc collector under the inlet manifold!

anyway, with fresh oil filled the day before, after a full day on track not one bit of oil made it to the catch tank - which was night and day different to before. ofcourse it was fresh oil so next time i imagine there might be a little after some moisture gets in there, but nothing major ! nothing like before !

 

I decided to fit breather kits for my both engines (2wd and 4x4) and leave kidney boxes.
I have two more questions.

1.I want engines to breath also from the exhaust side.
Is this the right plug I should remove and fit a hose nippel?


2. Connecting oil drain hose from oil separator.
Could I use turbo oil return pipe? Would it be under the oil level or is it a bad idea, because it's above the oil level?
The 4x4 kidney box has some oil drain hose, but there is no such in 2wd.
What would be the best way to fit oil drain for 2wd and 4x4? Should I drill the sump?




I will be very grateful for answers

 

My rocker cover is also vented at the rear, I have seen loads like this and a breather kit is the norm.

 

that fitting you have arrowed is what I use as a return on mine.

 

Mine too.

But its best to breathe from there too and return to sump via sump plug.