The turbo core has been ordered already, just wanted to know from people that dealt with turbos before 2Ghey&2Ricey came out, if this could be responsible for some slight power drop. The boost was still there, but I was kind of "slower". A 2006 M3 EU-Spec (rated at 343HP here) SMG was death even (I talk DEATH even here) with me from zero to 140mph, "on paper" I should have pulled,right?



So the BIG question of the day that needs to be answered is:

Could this affect power or is the damage too minor to do any harm???

 

Yes, You will have a power drop with a damaged compressor wheel. Looks like some FOD (foreign object damage) The next question will be if any bits of compressor wheel made it into the engine and damaged the rings/cylinder walls.

 

it looks like the bearing are shot on that turbo. I had the same thing happen to two gt30R. I currently have one sitting at Garrett for waranty. There are various reasons that can attribute to this with the 30R. First, try to move around that shaft to see if there is any play. According to your pics there should be since the housing has some scratch marks from the turbine wheel. It is either an oiling issue or a cooling issue. The oil feed line and the return line must be checked to make certain there is no blocking. The feed line should have been restricted in some way or use a -2 line. Some folks use a nitrous jet to attribute this. Also check the return line to make certain the oil is getting back to the block or pan depending on your setup. Next make certain there is coolant getting to that turbo, especially where you are located. There is also a slight chance your oil is contaminated which could cause this. The best way to find out is to send that turbo back to garrett and have them do an analysis. By looking at the components they will be able to tell what cause this. Of course, it could be a defective product too.

As for the power loss, it could be significant since the dynamics of the turbo efficiency has now changed. There is a loss in compression and design of the turbo wheel.

You should get it off immediately and send it out to be checked since it could harm your car.

 

Somebody left a bolt or two in the airbox during mock-up The core will be shipped over sometime next week, and Jakub assures me there was no wheel-housing contact, only wheel-debris-housing contact. Either way, new CHRA is ordered and a few minor scratches on the housing wont hurt too much.

 

Agree on the FOD - from the direction the blades are bent.

I commented on your other thread too

MB

 

Blues2k3,

You talk about restricting the oil feedline. I to have read that you need to restrict the oil feed line of a BB turbo to .035" from a number of placeds. I have noticed that my turbo smokes just a little after full warm up and I can smell it burning just a little bit of oil. I am going to order a restrictor for www.atpturbo.com as I think that this is the problem. I won't be restricting to much oil though will I?

J. R.

 

Definitely FOD and it will affect power. The new turbo should feel a bit better.

Tim

 

Thanks guys, I am possitive on the FOD, but that shiat about the oil lines scared the hell out of me. Cody please comment on that and ship that thing out at the earliest. I am looking for a re-match with the Vortech guy ;-)

BTW. the small scratch on the housing was 99% caused by the U.F.O./FOD that went in, otherwise it would be a full 360 circle damage if the wheel would be touching the housing.
And IF the "thing" went in, it must be sitting in the intercooler right now,correct?So I should not worry about the "thing" getting into the engine,or should I?
The damage on the blades is mainly a bend, not a chip, there is not much missing material, it's just bend backwards.

Thanks for the input guys, it's good to have you!!!

 

That would be the best way to throw my $ out of the window. The freight to and from Garrett would equal the cost of a new turbo from Cody

 

Difficult to say, as the blades appear to have a lot of thrust clearance from the distance of the marks on the housing.

In my turbine experience, blades do tend to bend if its FOD - guess because they are hot and more malleable than brittle at high temps.

The FOD *may* be in the intercooler, but id be wanting to find it, or check the state of your pistons!

How come there is coating loss on the leading edge of one of the blades?

MB