Project Porting! Pics!

[scheides]

So I'm kind of gunning for ~350whp on the stock 05 evo VIII turbo on pump gas. I do run alky injection, but I'm only running ~24psi so its really only used for a safeguard against bad gas (a lot of evo8 guys run 22.5 psi on pump gas, evo IX guys run almost 24!).

So, since this is my daily warrior, I am trying to keep it as reliable as possible. It has been tough, but I have yet to touch anything related to the turbo, or taking much apart.

This will end now. :) But, I am only planning on taking it apart once, and doing it right!

Here's where I started, with ~305whp. My car has HKS 280's, a TBE with a high flow cat, a upgraded FMIC, and the SMC alky kit.

http://www.scheides.com/albums/evo8/CHRIS1.sized.jpg

[scheides]

First thing's first, about 6-8 weeks ago I ditched the high-flow cat in favor of a testpipe. The change was semi-dramatic, with midrange torque feeling much better, improved spool, and high end power is definitely up a solid 10whp.

http://www.scheides.com/albums/evo-testpipe-manifold/IMG_2128.sized.jpg

http://www.scheides.com/albums/evo-testpipe-manifold/IMG_2129.sized.jpg

http://www.scheides.com/albums/evo-testpipe-manifold/IMG_2130.sized.jpg

http://www.scheides.com/albums/evo-testpipe-manifold/IMG_2131.sized.jpg
Look! A Turbo! LOL!

[scheides]

Next up is the o2 housing. This is a big thing for the evo guys on the stock turbo. At anywhere from $60-400, there's a ton on the market. Most are shyte, some are good, some are 'the best.'

The easy o2 housing to get now-a-days is the megan, and all the cheapos on ebay are rumored to be crap and cost cause boost creep (is this really a bad thing on a turbo that tapers anyways? meh...). Most on the market are supposed to be worth around 10whp, but buschur swears that this ebay (SSAC) housing that he ceramic coats and resells is worth a solid 15whp.

So please note, I'm not *saying* this thing is 'the best', just passing on info I've found and seen to be dyno proven on some of the bigger evo boards.

http://www.scheides.com/albums/evo8/IMG_2858.sized.jpg

http://www.scheides.com/albums/evo8/IMG_2859.sized.jpg

http://www.scheides.com/albums/evo8/IMG_2860.sized.jpg

http://www.scheides.com/albums/evo8/IMG_2861.sized.jpg

http://www.scheides.com/albums/evo8/IMG_2862.sized.jpg

http://www.scheides.com/albums/evo8/IMG_2863.sized.jpg

[scheides]

Next step back in the exhaust side is the turbine housing. I purchased a $30 air-powered die-grinder and $5 worth of carbide bits. This will be used to lightly port my turbine housing. The 05 Evos have the big 10.5 turbine housing from the factory, so all that's really needed is to port-match the twin-scroll inlets, facing the exhaust manifold. I'll snap some pics of this when I do it.

[blageo23]

My mom buys those red vines all the time :)

But that all looks good man.

[scheides]

Last piece on the exhaust side of the engine (save for the head itself) is the exhaust manifold. Buschur sells these puppies ported and ceramic coated for a decent price. This is supposed to be worth ~5-7whp. We'll see :)

http://www.scheides.com/albums/evo-testpipe-manifold/IMG_2132.sized.jpg

http://www.scheides.com/albums/evo-testpipe-manifold/IMG_2133.sized.jpg

http://www.scheides.com/albums/evo-testpipe-manifold/IMG_2134.sized.jpg

http://www.scheides.com/albums/evo-testpipe-manifold/IMG_2135.sized.jpg

http://www.scheides.com/albums/evo-testpipe-manifold/IMG_2136.sized.jpg

http://www.scheides.com/albums/evo-testpipe-manifold/IMG_2137.sized.jpg

[scheides]

http://www.scheides.com/albums/evo-testpipe-manifold/IMG_2139.sized.jpg

http://www.scheides.com/albums/evo-testpipe-manifold/IMG_2140.sized.jpg

http://www.scheides.com/albums/evo-testpipe-manifold/IMG_2141.sized.jpg

http://www.scheides.com/albums/evo-testpipe-manifold/IMG_2138.sized.jpg

As a comparison, here's a pic of how much material is removed from the twin-scroll outlet of the manifold, facing the turbine housing:

http://i22.photobucket.com/albums/b336/warrtalon/stock-mani-to-hotside.jpg
courtesy: Warrtalon (http://evolutionm.net/forums/showthread.php?t=179087)

[scheides]

This will be about it for the hotside, dyno results to come on the 2007 MitsuStyle.com Fall Dyno Day!

Up next will be (hopefully) a ported intake manifold and ported stock throttle-body. The stock unit measures 59mm on the inside, and can be easily ported out to 65mm. Please note, 65mm = 2.5", same as my intercooler piping (and most everyone elses). The IM inlet is ported to match, and then the runners are port-matched for optimal power. These together are a dyno-proven 15whp+ on the stock turbo, so I'm hoping this will let me reach my goal of a super solid, mostly stock, DD.

[Shane@DBPerformance]

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?

[blageo23]

Sorry I kinda posted in the middle of you explaining things. You can delete that so its not in the middle. But again that all looks nice. Hope you hit your goal.