Thread: Turbine housing damage question

Hey! I want to ask you something I'm trying to figure out. I have a GTiR T28 with damaged turbine housing and slightly damaged turbine wheel. The turbo is reaching desired boost levels with no problem,steady and holds the pressure to the top of the rpms,there is no lag compared to other t28(9psi until 2900 RPM). So my question will be Is my turbocharger less efficient than one with good turbine wheel and housing on same conditions? Because I feel I am not as much WHP as I should be and i was wondering if this can be one of the problems. Thanks!

Sure it can cause you efficiency problems. Pictures would really be needed to determine if the damage is significant or specific enough.

Well pictures will be difficult to take cause the turbo is installed right now. Based on all the info i managed to collect and read regarding turbochargers and fluid dynamics i ended up with the conclusion that if my turbine wheel can gain enough speed from exhaust gasses and deliver the movement to the compressor wheel, reaching and keeping pressure, then there wont be difference with other turbo. If there was damage on the compressor wheel then I agree it will cause flow problems. I think that in my situation I am just not taking most of the exhaust gasses energy and will reach rotating speed limit sooner compared to not damaged housing. What do You thing about these thoughts?

The damage is here:
2shared - download Exhaust housing.jpg
It's like something went trough the exhaust side, but the fins on the wheel are not broken and turbo is not off balance.

You are prob just fine. As long as the fins aren't broken you are not going to notice much difference in performance.

Well today had the opportunity to talk to an expert to this subject and he convinced me showing the compressor map that there will be absolutely no difference between my turbo and new one as long as it's able to keep and increase its speed. Until that limit i will be able to "move on the flow map".

I don't want to make new tread, so I will ask here.. soon will come the time to up the boost. How much whp do You guys think i would make with my current setup if i turn the boost to 1 bar?

more that the 370cc injectors can handle @3 bar fuel pressure and more than the maf can meter depending on what your using.

Well i have one z32 maf laying in my trunk So you think that i should be more than 270-80 at the crank? I think the next upgrade will be some subaru injectors.

What I know is the 370cc injectors are only good to 250whp @ 3bar. A gtir t28 should be able to do well over 250whp @15psi. I would upgrade the maf and injectors before turning up the boost. Turning up the boost with out enough fuel will kill a motor quick.