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I do have the Blue Head (I should also probably mention that it is a
brand new engine with about 5 hours on it). If there is a coolant bypass, then why would the water temp continue to fall during decent? I would value your opinion on this Mark since you seem to be pretty knowlegable (from the posts I have seen). Thanks. On Tue, 17 Oct 2000 08:18:05 -0500, Mark Smith wrote: >Tom wrote: >> >> I have a Rotax 582 on a Beaver RX-550. >> >> The temps during climbout are water 160-170, cht 225-250. >> Cruise temps: water 140-150, cht 200-225 >> >> On desent from altitude the temps drop lower than that. >> >> My question for everyone is, what is the minimum safe temp for the >> Rotax 582? >> >> I am worried about cold seizure if I have to power out of a bad >> approach or whatever. >> >> I am thinking of jetting to the next leaner jet size, what do you >> think? >> >> BTW, it is all stock as far as the cooling system. >> >> Thanks for any help, >> -Tom > > >I would more question the temps of the water going INTO the engine >during the decents,,,,,,a hard throttle application following a >prolonged dive in cooler temps will seize the engin very quickly, > >some planes such a s rans have the radiator on the belly with a top >mounted engine, this makes for a serious situation during coll weather >dives , buzz job, and seizure, etc,,,,,,,,,, > >the newer blue heads have a bypass to keep the water at operating temps >rather than the older engine series flow where all the water goes >through the rad,,,,,,, > >I would trade the CHT for a EGT BTW, as the water temps leaving the head >will be fairly constant, CHT or water gauge readings,,, > >remember, there is water between the actual internal head and the sensor >for CHT temps so the water and CHT run about the same |
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