a mate of mine has had a go at rebuilding my turbocharger,ive refitted it and i have no boost atall!!!
when my rs turbo is revved hard at a standstill ,should the actuator arm move?
what actually makes the actuator arm move? ecu? boost pressure created from the turbo?



cheers

 

I dont think it should no.due to you not building up and boost under load.

 

i was sure that if reveved hard it would ,as otherwise the dump valve wouldnt dump?

my car is not boosting at all

 

bump

 

whats it like underload

 

no boost at all ,just a small whirling noise comin thru the turbo,but not a tiny bit of boost,
it ent the end of the world as a mate has a turbo for me but just thought id post on here about it

 

Have you got a boost gauge ? and have you put load on the acctuator when you set it up ?

 

yeah have boost gauge mate,wont go above zero,and actuator was pre-loaded.think it must be a problem with the turbo wen we built it back up

 

Are you judging the performance of this turbo by what its doing when you free-rev it?

The actuator won't even begin to move until it see's at least 6 or 7 psi (depending on what actuator it is), meaning that you'll never see it move except on a dyno. The turbo also won't register much above zero whilst free-revving.

That said, DIY turbo rebuilds always fascinate me. Why on earth would you gamble with something so fundamental to your engine? If the turbo shits itself, chances are your engine will be toast, so why chance an unbalanced DIY rebuild?

 

no,it makes no boost when driven.

well a mate has offered me his turbo,but i havent got it yet,so i bought a small rebuild kit dirt cheap and we just thought it was worth a go,thats why we attempted it.it didnt work but it ent the end of the world,at least we had a go.i live on a proper budget so cant afford to just go out and buy a new turbo unfortunately