I got my setup all together the other day and street tuned it on 6psi, maybe put 5 hours of total driving on it. Then I went out to the local drag strip made one pass, and went home. About half way home, just cruzin, I hear what sounded almost like my brake rubbing on the dust cover, but only when I give it some gas. So I got it home trying to keep the noise for happing as best as I could, rev it slghtly and CLANK definitely my turbo.

Setup;
GSR motor
oil pressure is 80-90 when cold and at wot(hott)
brand penn 10-30 green oil
GE sandwhich w/-4an line, function7 1.6mm restrictor
Precision billet 6262 non-bb


Did I starve my turbo for oil?
There is alittle shaft play, but I can't make it touch the housing, and I can't see any visable damage to wheels. I was thinking I should drill out the restrictor to a -3an hole size, but is it too late? I was thinking even if I did drill out the restrictor there is possible damage to the turbo now.

 

have a nice day

 

you're not running without an air filter are you?

 

can you move the blades towards the housing? if so, something ****ed up in the turbo to give it that kind of play in 6 hours of use. my 5857 has about 2k miles on it currently and i took it off the other day to ceramic coat it. the blades had more or less no movement, only the tiniest radial play, no more than when i installed it brand new

 

It just really sounded like the turbo scraping but it's possible that it isn't the turbo. I'll have pull the valve cover in a min. and inspect

edit: thinking back, the noise would come when I put allittle load on the motor but it wouldn't if I was lightly pushing the throttle like 2% or less. I guess that is what makes me think it was the turbo.

 

I have a K&N Filter on it

 

It does seem to have more play towards the housing then when it was sitting on the shelf, not too much though.

 

have a nice day

 

No, I have race mounts.

I drilled out my restrictor, and everything seems to be okay now. Drove around for a good 2 hours last night, and no sign of the noise.