Bringing this back up.
Wanting to learn more about the TIT. Is continuous operation between 1600-1650 hard on the turbocharger? I know the limit is 1650 continuous, but the CHT limit is 460 and no one recommends running there. Just curious about keeping it healthy. At FL190 on Tuesday, 65% by the chart at 2500 RPM, about 12.2 gph, the highest CHT was 352, lowest 336. Number 3 is hottest, 6 coolest. So the engine temps are good with cowl flaps shut. If I leaned more, my TIT would exceed 1550. Peak CHT was close to 1650.
My question boils down to should we pour a bit more fuel in to keep the TIT to some value below red line in exchange for longer turbo and maybe exhaust life? Or does experience show they can run along at 1650 without harm?