Another little job I did was make my own swing valve. I had several 2.25 Garrett sv's and a few Mitsubishi's but no 2.5 Garretts let alone a 3 inch aftermarket one. Looking at the Mitsu part I noticed how it was the same as a 2.5 Garrett but smaller where it bolted to the turbo and didn't have a valve. So I though I would try to combine the two and save a few bucks. The Mitsubishi unit is much bigger right where the Garrett is smaller. By combining the two you can have a nice high flow unit for the cost of a few nickel welding rods. I watched a few youtube videos on how to weld cast iron as I wasn't really sure. I bought a bag of fine play sand to bury it in after it was welded up. I tacked it at the corners and kept heating it with a torch while I welded it. I would run a bead about 3/4 to 1 inch at each corner till I connected all the welds and to keep the heat even. Then I covered it with sand that I had warmed up and let it set all night. Some grinding and some paint and best of all less than 20 dollars invested!
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