Oil breather system/Oil catch can

[highlandcupra]

Can the wrong fitment of a oil catch can cause problems with crank or oil pressure to the extreme of bursting seals and gaskets??
I had a oil catch can fitted and used the forge block and cam adapters to use an10 unions and braided hoses, I unfortunately left the job to someone who said they new what they were doing but since having it plumbed in their way ive had a suspected burst oil cooler/housing gasket, burst turbo seals, leaking rocker cover gasket and sump gasket.
All of the above had been newly fitted and the turbo was a low mileage(approx 50k) ko3s.
Im now led to believe by looking myself and speaking to others that the breather system should have been vented, and when 1st installed it wasn't, is all that damage possible from that mistake?

 

[vroomtshh]

How was it plumbed in?
Many people say not to use the forge adapters as they're only 16mm ish and you want to stay as close to 19mm as possible but I doubt it would cause that much damage

 

[highlandcupra]

It was plumbed in so a hose came from the rocker cover and one from the block into both outlets in the catch can instead of having the lines into a T piece then into one outlet, when the car was ran with the original wrong setup the car steamed like mad, I put it down to the new head going on, took car for a test drive and the oil cooler went letting oil and coolant mix, plus what definitely seems like the turbo seals gone

 

[vroomtshh]

Yeh that would do it. The vapours had nowhere to go as they were fighting against each other
Expensive mistake :-(

 

[highlandcupra]

Yeah so it seems, totally gutted, been working on the car since the summer getting it up to scratch and for stage 2 and the one thing I leave to someone else and its ruined it all, toying between getting the ko3s seals done if thats all thats gone or go for a new hybrid, like the look and sound of beach buggy's k300