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Evo X turbo & DIY manifold

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Sirnixalot

10+ Year Contributor
328
11
Jun 5, 2010
Cayman Islands, Central America
I decided i was hell bent on getting an Evo X turbo on the car and happened to find one locally from a good friend. The only issue is that no one made a manifold. I have dabbled in mig welding before but never really attempted anything like making a manifold. Bought a Lincoln 125 mig, weld els and a flange and set to work.

I had to borrow a delta band saw to do the major cuts and then ground them down with an angle grinder till the pieces fit.

The welds aren't the prettiest but they are strong.

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The inner runners done

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Outer runners almost complete

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Welding finished!

I needed to rotate the compressor housing to point down and i modified a compressor outlet piece from my old truck (08 Nissan Navara 2.5L turbo diesel) to make a tight radius 90* bend.

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Filed a new notch on the backing plate for the locating pin to fit into.

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With the compressor housing rotated i had tabs welded for the bastard Mr. Peepers modded actuator to fit.

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Hit the manifold with a coat of DEI high temp (1500* stuff which will probably burn off)

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All wrapped and ready to rumble

DIY turbine outlet flange (3/8 plate)
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No boost creep for me!

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The actuator opens the flap up farther than the flange will allow so i cut a little notch to allow it that little bit more travel.

Will update again when the bends for the O2 housing get here :)
 
very impressive! keep up the good work!
 
Thanks guys :) Unfortunately i won't know how it feels for another few months. I got a used 2.3L short block that came with a bore scratched and the rings stuck in the grooves from carbon so i have to get new rings, bearings and bore my current block :(.
 
Keep in mind the collectors are not finished. Also there are alot of shavings from the flange getting milled inside the runners.

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Need to touch up the lower right section and wire brush off the splatter

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Need to do the same in regards to the splatter and see if i can get down in the runner to take out that lip (that on runner #3 which just so happens to be the shortest/straightest so i can get it from the port side)

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My camera isn't the best and the shininess of the flange doesn't help

When i was cleaning the shavings out of the runners with water i noticed how the water flowed through the runners and out of the turbine inlet flange. It was pretty cool to see how the gasses will behave. The longest runner with all the bends has the lowest velocity (which was expected).

Also i see why it is important to have the runners point into the flange at the steepest angle as possible so the gases don't have to glance off the turbine housing wall. After seeing this i think i will definitely take a look at making a manifold where the runners entering the collectors will be much more of a straight shot.
 
No recent pictures of the whole car as its in the middle of a tear down but here are what i have

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Test fitting the modified AGP SRT-4 intercooler (24x12x3.5" core :) )

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At a drag meet earlier on in the year

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Autocross meet last year

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When i first got the enkeis last year
 
That's pretty awesome you're building the manifold from scratch. The welds do look horrible, but with the wrap on there it only matters if they hold up. WAY better than I could dream of doing myself. Good job, hope the build progresses smoothly.
 
Very nice, I'm liking these exo x turbo swaps I'm seeing. Might have to try one out later down the road. Sweet Evo btw
 
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