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View Full Version : Ported Turbo?

KatDiesel
05-14-2007, 12:15 PM
Has anyone ported the stock turbo yet? I had my stock turbo ported on my WRX and it tremendously helped spoolup. Only had the hotside ported.

Just curious.
AWmustang
05-14-2007, 05:21 PM
I'm new to the turbo world. What exactly is porting a turbo? What does it accomplish? (i.e. why does it help spoolup.)
Dalton
05-17-2007, 02:48 AM
I'm new to the turbo world. What exactly is porting a turbo? What does it accomplish? (i.e. why does it help spoolup.)

If you are new to the issue,
this is the BEST place to start

http://en.wikipedia.org/wiki/Turbo ;)
Raider
05-17-2007, 02:58 AM
I guess I did not see the part about porting the turbo. Care to explain to us?
Leeep
05-17-2007, 11:34 AM
it sounds seriously expensive.
I imagine it's similar to porting a head, which would require removing the turbo and probably taking it apart ( i don't think you could port it if the vanes are still in there).
Anyone with experience care to comment?
AWmustang
05-17-2007, 04:00 PM
I guess I should have stated that I'm new to Turbo modding. I was aware of everything in that article.

But thanks for posting it, I'm sure it will be helpful to others.
shadow1
05-27-2007, 02:02 PM
Porting the turbo, especially the hotside, is useful when you are trying to extract every last once of power by smoothing airflow. It consists of grinding away metal to remove casting flash and enlarging passageways to match gaskets. It seems that we need to open the downstream exhaust restrictions 1st (downpipe, cat, exhaust) before you will see any benefits to porting. Also would be easier to use the larger hotside from a MS3 or MS6 than to waste time porting the CX7 turbo.
Alpha Wolf
05-30-2007, 09:37 PM
Very similar to porting a head or intake.

You want to blend away imperfections and smooth the surface and enlarge ports to match gaskets used etc...

I have done many head and intake port and polish jobs...

Never done a turbo. I would worry about taking it apart. If I did not take it apart I would worry where some of the fine metal shavings might find their way within the turbo.

Anything that helps air flow into or out of an engine will increase the power. Engines are basically air pumps. The more fuel/air in per stroke, the more bang per combustion and therefore, more power.

So if you could get it apart to see what you are doing and to insure metal shavings did not go where they should not, it would help.