open engine breather, could water enter engine here ?

[stinka]

So I took the pipe off from the breather to the inlet pipe and blanked the inlet rubber pipe off

But can water enter the engine through the open crankcase breather, or would the crankcase pressure be too much for water to travel into the engine if submerged whilst wading ?

 

[makeitfit]

I'm not entirely sure mate but I reckon if the engine is running there will be some positive pressure so water will stay out. However if it stalls then water could get in if you're deep enough I guess, allbeit small. Why not just blank that off too ?:thumbs

 

[stinka]

Why not just blank that off too ?:thumbs

Tbf there must be a non return valve to do the job available somewhere

 

[makeitfit]

Yep , get a cheap oil catch tank :thumb2

 

[stinka]

Sommit like this ?

http://www.ebay.co.uk/itm/Universal...arts_Vehicles_CarParts_SM&hash=item5649cb7f96

Then i suppose the water would just fill the catch tank, not the engine right ?

 

[makeitfit]

That should do it :thumbs

 

[niks_terrano ii]

.

Hi guys sorry to merge 2 threads if you block off the pipe that goes to the turbo inlet pipe why can't you just remove the blow by valve all together ? Because it's not venting any gas and chucking whatever oil comes out back into the sump anyway.

Does that sound right or am I wrong ?

 

[stinka]

it vents the other way, the crank case is pressurized from piston ring blow by, this pressure comes out to atmosphere from the sump

 

[niks_terrano ii]

.

If that's the case then if I removed the pipe that goes to the inlet pipe or in my case blanked it off why do I need the black thing it goes through ??
Can't I just run a pipe between the crankcase and the sump ??

 

[stinka]

The sump is on the bottom of the crankcase

the other pipe come from the rocker cover

 

[stinka]

You need to watch some youtube vids mate of how engines work and stuff

 

[niks_terrano ii]

.

I must be having a blonde moment !! Lol

The pipe that comes from the rocker cover goes to the black cylinder type thingy then a pipe comes out the bottom that goes to the sump and the other one goes down to the turbo inlet pipe.

I have blocked the pipe that would feed into the turbo inlet pipe.

So what is the black cylinder type thing doing now accept channelling excess oil back to the sump or is there pressure coming from the sump towards the rocker cover ??

Sorry for sounding thick !!

Does what I've tried to explain make sense ??

 

[mjpetersen]

Let me see if I can help in this. There are 3 lines coming to the black cylinder thing: 1, from the rocker cover at the top of the engine; 2, from the sump at the bottom of the engine. Both of these will be pressurized equally with gasses escaping past the pistons They are BOTH ultimately connected to the sump--the valve cover internally in the engine and the sump hose directly. Now if you just plug the third outlet from the black cylinder the pressure has no where to go and your lump will start bleeding from every gasket and seal it has--all over your drive and everywhere else it goes. You NEED to have the third hose to the cylinder open either to the intake of the turbo (original design) or to the atmosphere with a small filter like was posted earlier in the thread. Those escaped gasses must be allowed to vent.

Of the three hoses you can block off the sump line and the line to the turbo, but you absolutely must not block off the line from the valve cover. That is the route the escaped gasses exit and they need to exit. On older cars and tractors and such there is simply an open pipe from the valve cover hanging down so that the gasses (and small oil particles) vent to the air and drip on your drive.

I hope that helps.

Have a great day.

Mike

 

[mjpetersen]

The following should be inserted after the "drip on your drive."

But that was messy so they connected the line from the valve cover up to the intake of the engine so that these escaped gasses would just be burned and shot out the exhaust. But some engineers decided that too much oil was lost in that way so they added an oil/vapor separator so that only the gasses would go into the intake, but the oil would be returned to the engine sump. That last is exactly what we have. The black cylinder thing is the oil/vapor separator. It does not seem that it is a very good separator because all of us have oil on the insides of the turbo and intakes of our engines. There are better after market separators (others have mentioned them). But that is the way it works.

I forgot to include this part of the explanation before I hit "Post" :doh

Any way have a good day.

Mikle