Project Porting! Pics!

[Kracka]

Looks good, lets install it on Thurs!

[Goat Blower]

Buschur is quite a salesman. The porting is worth something though, at least it was on the DSM's when we were doing this BPU stuff. :biggrin:

[scheides]

I hope their dyno proven results aren't like the 15-25whp gains you are supposed to get from swapping FMICs on Evos.

Is the O2 housing really a ceramic coated SS autochrome unit?


Ya, I hope so to. If not, it'll come back off and I'll go a different route :) I have no idea if these are really SSAC units, all of the 'good' ones have been on back order for months. Rather than take my chances with the various units on the market, I just decided to go with one that someone actually has 100% good stuff to say about them.

Buschur is quite a salesman. The porting is worth something though, at least it was on the DSM's when we were doing this BPU stuff. :biggrin:

Whatever Mr. Going-back-to-small-turbo! Tons of fun to be had with a 16G and you know it! :)

[FattyBoomBatty]

That's awesome, but ahh, those numbers sound a little inflated.

That o2 housing looks like where the wastegate flow re-enters is really small, can that be enlarged?

[turbotalon1g]

Whatever Mr. Going-back-to-small-turbo! Tons of fun to be had with a 16G and you know it! :)

16G is definitely a ton of fun, but EVO 3 for DSMs all the others not worth it, if i did it again i wouldn't have this one.
Looks like its time for you to make some big power, reliability is all in the tune and quality of parts used and maintenance, some dsmer has been running his car for the last year and a half making 600hp and 500tq.
Cruise should be good this year again. :smoking:

[A//// Guy]

Squeezing every once of power out of that stock turbo arent you! haha

[scheides]

Update! This was a little delayed, as the o2 sensor was not super psyched about leaving the stock o2 housing, so I ended up replacing it :(

First off, BIG thanks to Chris Hughes (s2kracka) for overall help as well as some guidance with the porting I wanted to do. We ended up taking a bout 1-3mm (maybe 4mm on one side? I can't remember!) of of various portions of the twin-scroll turbine inlet. Nothing major, but in the end I would say it is definitely worth doing. Sorry I did not get a before pic, but here's after. We basically just gasket-matched it, just like the exhaust manifold is:

http://www.scheides.com/albums/evo8/IMG_2873.sized.jpg

http://www.scheides.com/albums/evo8/IMG_2874.sized.jpg[img]

We also found a little lip inside the o2 housing that we decided to mow down just a little bit. Again, nothing major, just trying to smooth out exhaust gas flow:

[img]http://www.scheides.com/albums/evo8/IMG_2878.sized.jpg

http://www.scheides.com/albums/evo8/IMG_2879.sized.jpg

[scheides]

Here's one thing that floored me. Check out the stock vs ported exhaust manifold:

Stock:
http://www.scheides.com/albums/evo8/IMG_2868.sized.jpg

Ported/coated manifold by buschur racing:
http://www.scheides.com/albums/evo8/IMG_2869.sized.jpg
(hughes is confident he can reproduce this with some time and a bunch of porting bits)

Anyways, it is obvious that this is definitely worth doing.

http://www.scheides.com/albums/evo8/IMG_2870.sized.jpg
(sorry for no more close-up pics here, but the runners are port-matched, opened up a little bit each)

[scheides]

Install pics:

http://www.scheides.com/albums/evo8/IMG_2880.sized.jpg

http://www.scheides.com/albums/evo8/IMG_2882.sized.jpg

http://www.scheides.com/albums/evo8/IMG_2957.sized.jpg

http://www.scheides.com/albums/evo8/IMG_2958.sized.jpg

http://www.scheides.com/albums/evo8/IMG_2959.sized.jpg

All buttoned up:
http://www.scheides.com/albums/evo8/IMG_2960.sized.jpg





Thoughts/Review:

Well overall, install for all of this, including doing the porting was right around 3-3.5 hours. Not bad at all, and I would say performance wise this is a big bang-for-your-buck set of mods. Turbo spool-up is improved, midrange torque feels stronger, and top-end feels good. My test-drive was out in the rain, so I'll update this tomorrow after I more through test.

[Goat Blower]

Porting gains are nice, it certainly doesn't hurt, doesn't cost much if you do it yourself, and it's completely undetectable.

BTW, I didn't downsize, my package is on it's way from FP right now. :)