Pop goes the dipstick

[EVO-00X]

:lol: yeah do that for a defect and to get the sweet smell of burnt oil lingering into the car...

Na... you probably have a clogged valve or return. Most people would drill out the PCV valve so its hollow or get a barbed unit as mentioned earlier. Then run a hose from it to a 'fully contained' oil/air seperator unit as pictured below. The other line out of the oil/air seperator is to plumb back to the breather hose connection next to your crank angle sensor. This is OK but doesnt work all the time. For best results remove the rocker cover and give it a good clean. Then drill the PCV valve thread and return fitting thread to a larger diameter, re-thread them again and fit larger diameter connections and hoses :wink: That usually works from what I've read and if it still doesnt fix your problem do what Bobwrinkle said but with a filter on it as CLutz advised hahahaha :lol:

 

[tharaka]

:lol: yeah do that for a defect and to get the sweet smell of burnt oil lingering into the car...

Na... you probably have a clogged valve or return. Most people would drill out the PCV valve so its hollow or get a barbed unit as mentioned earlier. Then run a hose from it to a 'fully contained' oil/air seperator unit as pictured below. The other line out of the oil/air seperator is to plumb back to the breather hose connection next to your crank angle sensor. This is OK but doesnt work all the time. For best results remove the rocker cover and give it a good clean. Then drill the PCV valve thread and return fitting thread to a larger diameter, re-thread them again and fit larger diameter connections and hoses :wink: That usually works from what I've read and if it still doesnt fix your problem do what Bobwrinkle said but with a filter on it as CLutz advised hahahaha :lol:

If youre going to do that, you might as well block off the breathers.

There is no point running a catch can unless you have 3 lines going to/from it

2 from the PCV and one back to the intake, or to a filter

 

[bazeng]

does your can have 2 holes or 3?
if 2, and u connect the 2 from the rocker cover to it, then the pressure will have nowhere to go, but your dipstick / seals..
u can fix this by drilling it (like what i did for taco)
it will basically just catch the oil and keep your engine bay nice and clean..

if its got 3, vent the 3rd one to atmo or back into your intake

 

[EVO-00X]

I'm a bit lost Tharaka, what do you mean by "There is no point running a catch can unless you have 3 lines going to/from it "? Are you saying that a larger diameter fitting from where the PCV is to a sealed seperator, then back to larger fitting connection next to the CAS isnt gonna work? this would increase the volume of the entire system and reduce pressure somewhat - probably not in all cases but still should reduce or elimintate it shouldnt it?

 

[tharaka]

I'm a bit lost Tharaka, what do you mean by "There is no point running a catch can unless you have 3 lines going to/from it "?

if you have two lines going to it
both from the rocker cover
and there is no vent, where does the pressure go? nowhere. you might as well block off both the breathers on the valve cover

 

[SIVART]

Its a Cusco copy can with only 2 lines out

I have never seen a 3 line one

I will get a little breather filter(drill and fit it)

or run a line out of sight so it filters outside the engine bay to provent the smell


Has anyone got a custom rocker cover made?
I was thinking if it could just be raised about as high as the top of the cam gears, or fitted a evo 4/5/6 cover on our style motor?

 

[jett]

I will get a little breather filter(drill and fit it)
or run a line out of sight so it filters outside the engine bay to provent the smell

Best to vent it back into your intake (pre-turbo), otherwise you can always smell it - like oily/petrol smell - even in the cabin...

Also for emissions laws compliance etc.

 

[EVO-00X]

Plumbing it back before the turbo will then make the oil residue coat the inside of your turbo, intercooler, plumbing, inlet manifold etc :roll: Damn EPA laws, if the cops spy a filter in the engine bay you're fooked :roll:

Seems the way to go from feedback above is a catch can and breather combo, but overall you still have to look at the root of the problem being blowby causing excessive crankcase pressure. Either the PCV valve is crap, the rubber on the dipstick is worn or not sealing properly causing it to pop out easily (crimp it), or your engine simply has run a lot of km and causing this excessive pressure under high boost (freshly rebuilt engines can do it too if the rings havnt bedded in well either). I'd get a leakdown test done on all cylinders to see where you are at and if its a bit on the worn side you could be up for a rebuild soon. If all cylinders prove OK, then catch can it, breather and crimp!! lol :lol:

 

[jett]

Plumbing it back before the turbo will then make the oil residue coat the inside of your turbo, intercooler, plumbing, inlet manifold etc

Thats the whole point of an oil catch can. To condense the oil vapour from the breather and plumb back relatively clean air into the intake. Hence reducing the amount of oil residue.

 

[BobWrinkle]

Most have a drain plug.

Thought the point was to relase pressure and remove oil from intake so you can run more aggressive timing due to a higher ron.

 

[bazeng]

u can do it legally, or illegally..
its up to you

im running my catch can to the exhaust using a vacupan...
so no smell in the engine bay, and no oil in the intake..

 

[EVO-00X]

Is that like one of the evacu-pan things some people talk about? How exactly does that work on your setup?

Added: Had a quick look into it on the net and apparently V8 guys have been using Moroso evacupan systems for years. It's a valve thing that goes onto your breathers and uses the venturi effect of the exahust gas to suck the sump into vacuum. Apparently the only draw back is they don't work if your exahust is too restrictive and it puts oil vapour into your exhaust system which increases emissions. Pic below shows one on a V8 engine - see the braided hose coming off the gold breather looking thing out of the rocker cover? that's it.

 

[BobWrinkle]

ooh ooh, I like the sound of this. Links info plz.

 

[bazeng]

check out the post i made about the honda catch can setups...
i think i made one anyway...

if the exhaust is too restrictive, it may build up pressure in your exhaust instead leading to no ventalation on your crank case due to the valve not opening up (1 way valve)

instead of running the breather on the rocker cover and directly to the exhaust, u run a hose from the rocker cover (or hoses) to a catch can, then from the catch can (which will be sealded) run a hose to the vacupan system.. so the oil gets seperated from the air and no oil will go to the exhaust (so no burning oil) only vapours