I know there are other threads on this but I wanted to show the results of my port job on the wastegate and report back with how it turns out after I put it back together and take the car out.
I started off with a carbide rotary file on a pneumatic rotary tool, then a small drum sander, 80, 180, 320 in that order, then did 180 followed by 320 by hand.
Hopefully the boost creep is under control now.
For anyone who doesnt know, the idea is to remove material to give the air a more direct unobstructed path to flow through. As it comes, the air has to flow around a sharp corner which is part of the problem. By removing the material that is in the way, and smoothing things out, it speeds things up and helps move the air through the passage we want it to go through.
( I have more photos to add of the work from the other side to open the flapper as well and will add them tommorrow)
hope this helps someone
Heres a look at the exit side of the housing. I dont have any photos of before I removed all the material I did, but the idea is illustrated in the photo where I am holding the flapper partially open, rather than a full 90 degrees open. Normally the flapper arm would hit against the actual housing before opening a full 90 degrees.
I started off with a carbide rotary file on a pneumatic rotary tool, then a small drum sander, 80, 180, 320 in that order, then did 180 followed by 320 by hand.
Hopefully the boost creep is under control now.
For anyone who doesnt know, the idea is to remove material to give the air a more direct unobstructed path to flow through. As it comes, the air has to flow around a sharp corner which is part of the problem. By removing the material that is in the way, and smoothing things out, it speeds things up and helps move the air through the passage we want it to go through.
( I have more photos to add of the work from the other side to open the flapper as well and will add them tommorrow)
hope this helps someone
Heres a look at the exit side of the housing. I dont have any photos of before I removed all the material I did, but the idea is illustrated in the photo where I am holding the flapper partially open, rather than a full 90 degrees open. Normally the flapper arm would hit against the actual housing before opening a full 90 degrees.
Attachments
Last edited by a moderator: