up and down shaft play?

[RichielightweightGT]

how can you check is your pcv blocked? on my ep82 it has alot of oil residue on the rocker and some around the pcv but i have a spare rocker cover and the pcv looks way bigger than the one on my gt lol oh and on the shaft play subject ive a glanza ct9 in my room and theres no shaft play atal in it bt it has a crack in the exhaust housing by the wastegate has no visible oil stains on exhaust side or where it blows the air up on the intake side i cant wait to put it in and try it out

 

[Aidan@EP-styling]

Blocked PCV valve = increased crank case pressure. Turbo return oil feed gets disturbed: if pressure is high enough then oil return will be almost blocked as oil cannot stream into sump with the pressure in there. Result - Turbo oil seals will burst due to oil entering the turbo from oil feed and cannot return freely into sump.

Hope that is clear^^^ It is very very common on BMW cars where the crank case breather on top of engine is a very poor design.

 

[corofin12345]

Blocked PCV valve = increased crank case pressure. Turbo return oil feed gets disturbed: if pressure is high enough then oil return will be almost blocked as oil cannot stream into sump with the pressure in there. Result - Turbo oil seals will burst due to oil entering the turbo from oil feed and cannot return freely into sump.

Hope that is clear^^^ It is very very common on BMW cars where the crank case breather on top of engine is a very poor design.

interesting aidan.. but can the oils seals burst cause they are made from spring steel or whatever they are made from.. id say it just forces past the oil seals in this case? also, if there was that much build up of pressure would it not escape out past the other pipe on the rocker cover??

 

[Aidan@EP-styling]

interesting aidan.. but can the oils seals burst cause they are made from spring steel or whatever they are made from.. id say it just forces past the oil seals in this case? also, if there was that much build up of pressure would it not escape out past the other pipe on the rocker cover??

Yea those little seals look like piston rings! the oil forces past them.

 

[corofin12345]

Yea those little seals look like piston rings! the oil forces past them.

exactly ya.. going back to the minimal shaft play.. when the turbo spins up i can only imagine that the centrifugal force on the seal opens it and creates the seal needed.. like getting my head around things like this.. i am worried about the first seal tho cause on all the turbos i have here its missing so it can only end up one place and thats the sump.. not good really