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Showing results for tags 'cht temps'.
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I have recently bought a Rocket and would like some advice on climbing to altitude. I start off at full everything, and then after 1000 feet or two drop back to a manifold pressure of 35 and 2500 RPM. Even though I leave the mixture full rich and cowl flaps open, of course, I still find my hotest cylinder creeping above 380 and near 400 at a speed of 120 kts. Sometimes, perhaps I’ve gone a little slower than 120 kts. I end up having to speed up to 130 kts to get the temperatures to drop a bit, and my climbing rate plummets to about 600 ft./min. I am wondering what other people do. I am not sure that reducing from full throttle and full RPM actually runs any cooler, but it’s what I was taught. Thanks!
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Two questions/ comments here... With the frigid winter temps here in the midwest my coolest CHT gets down to 290-300 while running LOP. The other 3 are in the 330 range. Other than running ROP I really don't see how this can be changed. Secondly my oil temp doesn't get over the magic 180 degree mark in cruise to burn off the moisture the Lycomings hate so much. It does get over the 180 mark in climb but cools down to 176-178 or so once cruise configuration is reached. Does this make my 3 hour cross country flights as useless for engine longevity as a ground run?
