Oil In Intercool Pipe

[Zas)-(]

hi guys i was just changing my old adapters to new ones

n i foun that theres black oil stuff in my intercooler piping... looks

realli black and old

why is it there?

should i be worried?

should i crucify myself?

[The Mafia]

hi guys i was just changing my old adapters to new ones

n i foun that theres black oil stuff in my intercooler piping... looks

realli black and old

why is it there?

should i be worried?

should i crucify myself?

why is it there? - Its there because who ever sold you the car must have forgotten to put one of the pistons back in.

should i be worried? - Yes, probably only running on 5 cylinders

should i crucify myself? - Yes, on a cross, with barbed wire, and lots of monkeys dancing around you with whips

On a more serious note, this is normal.

[Zas)-(]

LOL LOL

so on the serious side this is usually normal?

oesnt mean i need a rebuil of the turbo or anything?

[PM-R33]

Oil in the intercooler piping is just usually from oil blow-by due to emissions, if u have a look at ur cam covers ull notice hoses running from them into ur plenum and into your intake pipe, this is how the oil gets into your piping. If you wanna stop this you need to run an oil catch can

Phil

[Zas)-(]

ahhh yes yes an oil catch can.... does it matter what brand and yes i think i'll run an oil catch can

its so hard cleaning oil always on your hands....

thanks guys for ur help

[PM-R33]

Hahaha yeah oil is a bitch, as for what type of oil catch can, best thing is to do a search as its been covered a lot of times, but to give u a basic idea, you either can set up an oil catch can a legel way or an illegal way. Legel way being is u set it in line with your standard lines and have the catch can catching as much oil as possible before it plumbs back into your intake pipe. The illegal way is you get rid of it plumbing into your intake pipe all together and just run a filter on the catch can.

Have a search and theres heaps of pics showing how to set them up and which ones are better than others, i run a drift oil catch can because you can open it up to fill it with steel wool and u can also run a filter onto it, but the choice is urs

Hope that helps a bit

Phil

Edited May 12, 2007 by PM-R33

[Dush]

mmm.. I've got the sme problem... but i think that their is too much oil to be normal.. I been told it could be the oil seals on my turbo or i might of done some ring damage on one of the pistons...?

what do u guys think?

[Yawn]

Ive also got oil dripping out of my blow off valves after a few laps out

Need a catch can asap heh

[Zas)-(]

i always thought if u had any type of oil in your blow off your turbos worn out or on the verge of shitting itself..

and too much oil? i had a thin layer layer of black oil ..

yeah tru topics are covered..

ahh i see thats a great idea with the steel wool.. im gonna steal dat idea.

i'll look into more catch cans...

cheers guys

[Yawn]

^ well that being said my front turbo is leaking oil from the oil return line..

[fEkuaR]

mmm.. I've got the sme problem... but i think that their is too much oil to be normal.. I been told it could be the oil seals on my turbo or i might of done some ring damage on one of the pistons...?

what do u guys think?

If there is alot of oil then its possible its a turbo seal or a ring cause alot of blow by. Do a compression test on the donk if tha checks out then id look at getting your turbo rebuilt.

[The Mafia]

I'm still rofling about the random last comment in the first post

[tridentt150v]

Steel wool. don't use it. Go to woolies or Coles and buy a stainless steel scourer for about $1.50. Its like a 1-2mm wide continuous band of stainless steel in a ball. Unlike steel wool, its clean, there is no dust, it won't rust, and it will condense the oil vapour. One scourer is all you need.

Pull it out and fluff it up , it will take up the space in the catch can.

[Zas)-(]

nice.... so this will generally keep you oiler much more cleaner and smoother to run..

... haing a catch can should really be a basic mod i never knew it had so many advantages. if it makes my oil cleaner and saves me cleaning oil off my hands( to which i still hae including the cuts and the smell ) .... then hell yeah!

mite take up the cusco brand oil catch cans..

what other brands can have the heads taken off for me to put the scourer in ?

[tridentt150v]

Oil catch cans have nothing to do with keeping your oil clean.

[Zas)-(]

so whats the scourer for??

[PM-R33]

well if u dont have anything in the catch can and its just hollow, the air will just pass through it and the oil probably wont be caught in the catch can and therefore defying the point of it, however if u have something inside like steel wool or whatever, the vapor hits the wool and seperates the oil which then falls to the bottom, kind of like condensation.

Hope that helps a bit.

[PM-R33]

Ive also got oil dripping out of my blow off valves after a few laps out

Need a catch can asap heh

[tridentt150v]

OCC's are for partially removing the oil vapour from your rocker breathers.

What happens is:

Your motor has to vent. The combustion chamber vents via the inlet and the exhaust. The sump vents via the rocker boxes. The pressure of pistons whirring around creates suction and pressure in the sump, this is when your looking at the underside of the piston. So when it travels up the bore a piston creates suction in the sump, and when the combustion pushes the piston back down the bore there is air displaced that creates pressure. There can also be some blowby, this is air that escapes out the combustion chamber past the rings, that is, the rings are unable to contain the 'explosion' of petrol burning. This happens in worn motors mainly and can increase when your reving the bejesus out of it.

This negative and positive pressure created in the motor on the underside of the pistons breathes up through the oil galleries into the rocker boxes. The rocker boxes in the old days used to breathe out a mini filter to atmosphere. In this pollution conscious age, the breathing is vented back to the inlet side of the motor and burnt.

In the case of a turbo skyline the oil vapour in the rockers is vented back to the intake pipe in front of the turbo.

The turbo picks up this oil vapour air as well as normal air through the air filter, compresses it and sends it through the intercooler piping. The act of compressing the air [which is a turbo's job] and also hitting the cooler intercooler piping helps condense the oil vapour, so it settles in your piping. Thats how the oil gets in your intercooler etc.

A way of slowing this buildup down is to install an oil catch can. You install the can in series on the line that comes out of your rocker boxes [also called a tappet cover etc]. So you have the oil vapour air coming out of the rockers, into the catch can via one fitting, passing through the steel wool, and then exiting via the other fitting and then entering the intake pipe on the turbo. The catch can and steel wool are supposed to make the oil vapour condense and separate from the air. This happens, BUT a catch can only helps, it doesn't stop or trap all vapour, so you will still get some vapour getting to the intercooler piping. The older and more worn out your engine is, the more oil vapour that gets pushed through.

And thats my short answer.