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Originally Posted by byerlyfactor
(Post 1422077)
Update for today: I was a dumbass and bent the compressor wheel from moving around the housing carelessly. I think I'll end up buying a new wheel or just wait and buy a genuine 2554 or 2560. Or maybe another chinacharger. I don't know for sure yet, and I still have a while to go before I can get to a point where I would make boost.
I also fitted the manifold to the head after making the holes slightly bigger. I still need to do a little grinding so the nuts will all fit. I'm happy with how it looks. The SR20 turbos are garret journal bearings. You get OEM quality, at a chinacharger price. |
bend blades back, call it a day. that's what I'd do at least...
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Today I did a mini coolant reroute, mostly because I needed more room for the downpipe. I bought 2' of 5/8" heater hose, a 1' 5/8' copper coupling, and a few 15/16" spring clamps. In total, I spent about $15. I'm pleased with how it turned out. It should do a little to keep temps down until I start making boost. Now, I can finally start on the downpipe and exhaust. I really wish I made a bottom mount manifold because it would be a hell of a lot easier. Oh well.
https://cimg8.ibsrv.net/gimg/www.mia...f4d61dbd1a.jpg I also bent back the blades per Braineack's advice. https://cimg7.ibsrv.net/gimg/www.mia...2630ebe552.jpg |
I started on the downpipe today. I decided to make pie cuts because 1) there's no way a mandrel bend will fit in there, and 2) it'll give me a lot of practice welding thin gauge material, which I really need to get better with. I'm probably not going to calculate the exact angles I need and instead I'll make lots of pie cuts and use them for the complex angles I'll need.
Here's the first 90 I made. I ended up eyeballing the size of the middle pieces after I set the center line radius to 1" in the calculator and realized that wouldn't work after I started cutting. Also it doesn't quite reach 90 degrees - and I'm not exactly sure why. https://cimg6.ibsrv.net/gimg/www.mia...6b2a501bf8.jpg Here's a quick comparison to a 90 with a 3" CLR from Summit. Much tighter as you can see. I did the math and my pie cut has a CLR of about 2.3". https://cimg7.ibsrv.net/gimg/www.mia...abf1ce7b4d.jpg Here's my second pie cut 90. Much better than before. This time I cut it correctly for a 2" CLR. I added one more middle section to make it smoother and a little more aesthetically pleasing. https://cimg8.ibsrv.net/gimg/www.mia...a23c14c183.jpg Here's the new one compared to my first. Even tighter. https://cimg9.ibsrv.net/gimg/www.mia...9f0ca37c99.jpg The smallest sections are a little thicker than a quarter inch, with the edges being a little under. After welding all these up I'm either going to be wayyy better at tigging small stuff or never want to see a tig torch again. Hopefully its the former. https://cimg0.ibsrv.net/gimg/www.mia...825d913c51.jpg |
Originally Posted by byerlyfactor
(Post 1423568)
I also bent back the blades per Braineack's advice.
how are you bending them? Were the tops bent before, and you bent the vanes straight? wouldnt that negatively change the balance? I cant imagine you could bend them all perfectly and have balance past 100,000rpm thanks |
It's some t25 chinacharger. I think they were mostly straight before but I guess it'll work if they're all straight after. Yeah the balance is probably off but it's better than when they were bent.
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Oh ok, I missed his post on the mobile site.
I thought it was some performance gain lol |
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