WizardBlack Posted August 16, 2008 Share Posted August 16, 2008 Commercial Turbos you get from Garrett and other manufacturers are set with "Containment" as a primary design criteria. They overspeed and break them to make sure they do NOT frag-out through the casings. If you saw what they did to those things during testing in the load cels you would be amazed. 45psi Surge, 45psi Surge, 45psi Surge....24/7 till failure. Heat soak tests where they get full exhaust temperature on the turbine wheel against a load for 1 minute to soak it, then immediately a valve switches to chilled air to heat-stress the thing, then back to hot...over and over 24/7 till it fails... Rarely is anything spectacular happening on the commercial turbos, the rpm indicator simply stops and you get an alarm to go in and check out what went 'poof'! Now the racing turbos....those have a metal shield and they watch them via video link from the cel at the REAR of the dyno room, about 25 feet from the operation console! LOL Those very same commercial turbo cartridges can be put into VERY sexy thinwall aluminum casings, with Titanium Turbine Housings for 'racing only' applications like CART or other uses, but they will not be available over the counter to regular buyers off the street. When they go, things from the inside usually end up on the outside, some distance away from the failure! I have seen Pallets of containment test turbos at the Garrett Facility in Lomita...they keep them around for loading up the Diesel Trucks for road testing under load. Nothing like a bed full of cast-iron turbo housings, and a car trailer full of crates of the same to put a load on the old 1-Ton Diesels! LOL LOL good story. Quote Link to comment Share on other sites More sharing options...
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