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Old 04-27-2012, 03:52 PM   #5 (permalink)
gone-ot walking...
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...FWIW, the Flight Engineers in our EC-121 "Warning Star" radar planes would do exactly what you described with the Wright R-3350 "turbo-compound" engines to achieve maximum economy, BUT they also had cylinder-head temperature gauges to monitor how HOT the cylinder heads were getting, something not available in today's automotive engines, which only monitor coolant temperature, not actual cylinder-head temps.
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