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As a student one of my best learning experiences was Posted by MI-Roger [Email]  (#882) [Profile/Gallery]
(more from MI-Roger) on Thu, 28 Jan 2016 17:51:58
In Reply to: Re: A lot of engineers working for the automotives......., EGD  [Profile/Gallery]
, Thu, 28 Jan 2016 09:53:29
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Working in the dynamometer lab. My job was to install automatic transmissions on test stands and then monitor the automated tests for signs of things coming apart - literally. Installing engines in the test stands was secondary to the trannys, but I had the chance to tear down numerous failed engines to just a bunch of loose parts. Nothing like this to see how everything fits together in an engine!
These engines were run so hard that the cast iron manifolds glowed so red they almost became translucent. The larger V8 engines used water cooled marine manifolds on the exhausts but the smaller 4-cylinders had no such aftermarket parts available.
Years later I had to re-design the underground exhaust scavenging system that served the dynamometers. The extra-heavy schedule 80 pipes had collapsed/melted due to the heat of the exhaust gasses they contained, and the exterior of these pipes was so hot the sand back-fill around the pipes had turned to glass. Insufficient use of expansion fittings had caused lots of broken welds and failed anchor bolts. The original designer under-estimated the HP output of the engines which would be installed. A high powered small displacement engine produces lots of heat when run to failure at wide open throttle, more than the 150HP estimate used originally.
_______________________________________ Saabs owned: 2008 9-5 Aero Sedan, sold at 227K miles 2006 9-3SC 2.0T - Wife's daily driver 2000 Viggen Convertible - Sold May, 2022 1964 Quantum IV Formula Car - Retirement project 2000 9-5lpt Sedan, sold at 318K miles
, Tue, 26 Jan 2016 15:50:00, Thu, 28 Jan 2016 09:53:29, Thu, 28 Jan 2016 17:51:58 <-- Viewing This Message, Thu, 28 Jan 2016 11:37:50, Thu, 28 Jan 2016 18:05:17
, Wed, 27 Jan 2016 12:49:38
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