TURBO EXPERITISE: TWO questions: 1. Difference... 2. Disconnected..

[Wolf]

The housings, elbow, wastegate all are fine. It just needs new bearings/seals/wheels.

[kenwood guy]

I have a question about oil lines how does that work with turbo??

[Sluttypatton]

Turbochargers oil supply is pressure fed and gravity drained.

[kenwood guy]

now the oil is needed for the turbines right the reason why engines need oil same purpose???

[Sluttypatton]

Yep, lubrication and cooling, although the cooling property is lesser in a water cooled turbocharger.

[kenwood guy]

when you say water do you mean antifreeze??

[Sluttypatton]

Yes, water cooled is just a term used for it.

[kenwood guy]

how long do the bearings last??? would they wear out over time???

[SaabJohan]

Watercooling is mainly used to cool the turbocharger after the engine is shut down when the oil stops to circulate.

The bearings in a turbocharger are usually hydrodynamic, that means that they are floating on a oil film so the wear on the bearings is low. However, if you don't service it properly, or regulary shuts down the car with a red hot turbo they and the piston ring seal in the turbocharger can take damage.

[kenwood guy]

uh oh so how would you service it take it to pep boys or something??

[Wolf]

Originally Posted by SaabJohan

Watercooling is mainly used to cool the turbocharger after the engine is shut down when the oil stops to circulate.

How is the water going to continue circulating if the engine is off and the water pump isn't spinning?

[Wolf]

Originally Posted by kenwood guy

uh oh so how would you service it take it to pep boys or something??

Service = change the engine oil frequently.

[SaabJohan]

Originally Posted by Wolf

How is the water going to continue circulating if the engine is off and the water pump isn't spinning?

Hot water and vapor goes up, cold water down. As long there is a temperature difference water will flow. Cold coolant is taken from a low place, in low in the turbocharger and out on a higher place like the cylinder head. The design of the cooling system and placement of the turbocharger is important if this shall work.

[kenwood guy]

so in other words the turbo needs to be above the water pump???

[SaabJohan]

Originally Posted by kenwood guy

so in other words the turbo needs to be above the water pump???

http://www.egarrett.com/about_garrett/faq.jsp