Stuffed Turbo Seals, Blowby or something else?

[RB30-POWER]

Hey Guys,

Just pulled the turbo apart to have a quick look over before I bolt it onto an engine im building, and i found some oil in there, well quite abit actually.

I've not really ever heard of the seal really failing at such a young age on these turbo's so im not 100% sure its that.

If it was an older turbo i would understand, and surely if the turbo was boosted to a high level, which could cause the seals to wear quicker, surely it would be missing the rear wheel. So im not sure its been boosted/flogged either.

What I can say, is i got the motor 40k on clock (genuine),

*the cross over had no oil in it,

*the plenum didnt really have any in it either

I didn't get the cooler, so its hard to say if the oil was getting trapped in that and not getting to the throttle body etc.

If it were excessive blowby, because the breathers go directly into the turbo compressor inlet, wouldnt you see oil on the entry to the turbo, or would it get sucked stright into the blades and not mark the walls?

The motor has been sitting for sometime before i got my hands on it, maybe 12 months or more, so maybe it ran from somewhere else?

Have a look and tell us what you think.

Cheers

[OVL-747]

oil will always run along the inside of a pipe rather than float in the air , so therefore if the breathers return before the comp wheel , then it will find its way and build up on the inside of the cover as the fotos state.

a kink or blockage in the return line can also cause oil to back up , basically up and thru the chra , this can push out thru a seal aswell.

personally with the motor going into ur car , i wouldnt trust that turbo , spend 500 quid and get it rebuilt , even if it is in perfect condition to start with , its peice of mind id prefer.

ps - is this mick?

cheers

andrew

[RB30-POWER]

personally with the motor going into ur car , i wouldnt trust that turbo , spend 500 quid and get it rebuilt , even if it is in perfect condition to start with , its peice of mind id prefer.

ps - is this mick?

cheers

andrew

What the hell are you doing around here Andy

Yeah, well its not going into my car to be exact, im building the motor to go into my brothers skyline. (see if they are any good before i put one in the cal, lol)

I just want to use the turbo to get it up and running for a while until i do the ecu, injectors and bigger turbo.

But what I don't want to do is put it on, and get everything filled with oil and make a mess. Cylinders, cooler piping, cat, plenum etc etc.

Its weird all the vl turbo's i've pulled down have always been clean as, considering the thousands of km's they would have done.

Get a late model high tech bb nissan turbo and its full of oil, go figure...

I think ill throw it on and take the risk, its probally just the breathers that caused the buildup, but im hoping some other Nissan guru's have pulled theirs down and maybe found /or not found the same thing, to confirm its health.

[cameron]

Thats normal, oil their to lubricate the shaft/wheels in the turbo and you usally get a thin spread on the intake funnel aswel.

If it were blowby then you would proberly have burning oil smell coming from you'r exhaust and with a blow turbo seel same thing. - White Smoke.

Jun

[RB30-POWER]

Thats normal, oil their to lubricate the shaft/wheels in the turbo and you usally get a thin spread on the intake funnel aswel.

Jun