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2.8 turbo diesel rocket cover breather question
Posted: Sat May 05, 2007 12:40 pm
by brad 93hilux
hi, i have a turbo glide kit running a t25 turbo, before the turbo got installed i had the breather hose going from the inlet manifold to rocket cover now i have it going from rocket cover to air intake pipe before the turbo.
My question is if i run a intercooler is it best to run a oil catch can from rocket cover to the can? My thought is the oil mist might go through the turbo and then into the intercooler only to clog it up or make it less efficient.
Why would they take it out of the inlet manifold and put it in the intake pipe when its not gonna be in the way where it is? Unless it lubes up the turbo some what?
Any ideas guys
Cheers
Re: 2.8 turbo diesel rocket cover breather question
Posted: Sat May 05, 2007 1:38 pm
by Shadow
brad 93hilux wrote:hi, i have a turbo glide kit running a t25 turbo, before the turbo got installed i had the breather hose going from the inlet manifold to rocket cover now i have it going from rocket cover to air intake pipe before the turbo.
My question is if i run a intercooler is it best to run a oil catch can from rocket cover to the can? My thought is the oil mist might go through the turbo and then into the intercooler only to clog it up or make it less efficient.
Why would they take it out of the inlet manifold and put it in the intake pipe when its not gonna be in the way where it is? Unless it lubes up the turbo some what?
Any ideas guys
Cheers
if they left it on the inlet manifold, your tuirbo would pressurise your rocker cover (and in turn your crank case). THis would be bad!.
Must be put pre-turbo.
This is how all factory turbo setups are run, even the ones with intercoolers, so unless yours has farked rings and ispumping alot of oil through your crank case ventilation hose (the hose coming from yiour rocker cover) then it wont be a problem.
Posted: Sat May 05, 2007 9:36 pm
by brad 93hilux
yeh, thanks for the info.
Cheeers
Posted: Sun May 06, 2007 12:06 am
by fisho64
"so unless yours has farked rings and ispumping alot of oil through your crank case ventilation hose (the hose coming from yiour rocker cover)"
EVERY 2.8 litre hilux I have EVER seen or owned (3) has alot of blowby. That is just the way they are. None of mine has ever needed topping up between oil changes, but YES you should fit a oil catch can, but only if it hass at least the same size fittings as your breather. Smaller will pressurize crankcase.
Posted: Sun May 06, 2007 11:04 am
by Shadow
fisho64 wrote:"so unless yours has farked rings and ispumping alot of oil through your crank case ventilation hose (the hose coming from yiour rocker cover)"
EVERY 2.8 litre hilux I have EVER seen or owned (3) has alot of blowby. That is just the way they are. None of mine has ever needed topping up between oil changes, but YES you should fit a oil catch can, but only if it hass at least the same size fittings as your breather. Smaller will pressurize crankcase.
Just like almost every diesel with 100K on it. Factory setups all over the world get away without a catch can, why cant his?
Posted: Sun May 06, 2007 3:17 pm
by tweak'e
simply check the intake hose before the turbo and see how much oil is on it. if there is a bit then install a catch can.
Posted: Sun May 06, 2007 6:06 pm
by brad 93hilux
yeh there is a fair bit of oil on the intake hose before the turbo.
Cheers
Posted: Sun May 06, 2007 7:26 pm
by tweak'e
brad 93hilux wrote:yeh there is a fair bit of oil on the intake hose before the turbo.
Cheers
i would fit a decent catch can. check the surf site as they are wel used to them
make sure it flows well enough, a lot don't.
also if it has lots of blowby drill out the outlet on the rocker cover and also check the baffels inside the cover. they can get clogged and holds the oil in it instead of draining back into the motor) helping it to blow out the vent.
Posted: Sun May 06, 2007 7:47 pm
by Willy Hilux
I put a catch can on my turbo lux. From Manifold to can then vent to ground. Kept on blowing off hoses with the manifold hooked to the intake. Get about 100ml of oil between 5000km oil change.
Posted: Mon May 07, 2007 7:25 pm
by brad 93hilux
I have seen the oil catch cans have 2 inlets on the top, do you put the hose from the rocket cover on one and put a breather on the other?
Has n e one used the monsa ones from supercheap and repco?
Posted: Mon May 07, 2007 7:36 pm
by Shadow
brad 93hilux wrote:I have seen the oil catch cans have 2 inlets on the top, do you put the hose from the rocket cover on one and put a breather on the other?
Has n e one used the monsa ones from supercheap and repco?
They are normally baffled inside, or full of steel wool(type stuff) which makes the oil drop to the bottom. Then the other connection on the top is the outlet, by law needs to be fed back into your intake (pre turbo). Trucks etc dont arent required by law to feed it back into the intake, so they just vent it to atmosphere.
If they have a connection on the bottom, its only going to be for draining the oil.
Posted: Tue May 08, 2007 8:10 pm
by brad 93hilux
Cheers