mike.smith wrote:Just as a point of reference, I have flown 500 hours behind my AeroVee. No modifications to anything from the original build from the kit, including the super tin, baffles and cylinder fins. No cooling issues even in the dead of summer. I borescope my valves at every annual, and so far they look as they should, with no burns or abnormal conditions. There is nothing inherently wrong with the construction and cooling of the stock AeroVee. If someone wants to make improvements, fine, but as a general rule it's not necessary, and may just add time and money.
A VW will run hot during the first 25-50 hours. That's normal. After that is should settle in. If not, then you can look for problems to solve.
My 2 cents.
skyrangernz wrote:The ring CHT's are consistently 100 F hotter than the Aerovee probes. At full power and 3200 rpm, I get 325 F on the Aerovee probe and 425 F on the ring under the plug probe. I am at a loss as to which one to believe as 400 degrees is the published limit.
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