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151 temp and rpm

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laddie71

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my max rpm is about 4400 and t

my max rpm is about 4400 and the temp is usually 190-200 and 180 at idle. What is a normal full speed temp and what is a safe max rpm to cruise at?
 
"The temp is correct. The maxi

"The temp is correct. The maximum RPM range should be 4800-5500. I was normally cruising at 4500-4900 with my AQ140A, but went over a few times with no problems whatsoever."
 
"That sounds good. I had a mec

"That sounds good. I had a mechanic work on my engine and he told me never to run over 3500 and the other day as I was steaming along, I thought, this is pretty slow. Thanks again"
 
"I find your mechanic's re

"I find your mechanic's recommendation very strange, unless he has never worked before on VP 4 cylinder engines. Also, if your engine is well tuned, your maximum RPM indicate that you are a minimum of 2" pitch overpropped. What prop do you have installed now?"
 
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