scottmschmidt(at)yahoo.co
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 Posted: Sun May 20, 2007 8:03 pm Post subject: Oil Cooling Update |
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I have to give you all an update on my oil cooling. Tim pointed me to his site where he did some work on sealing the engine baffles better as well as applying RTV between the cylinders. Also, I was having my #1 and #2 cylinders going over 400 during my climbs which others were not seeing.
I must admit, my first thought was, yea right, all that work will change it 1 degree. When I installed my baffles I cut 1/2 of the baffle material away from the #1 and #2 cylinder and they were still hot. About 2 weeks ago I removed the whole thing and now my #1 and #2 cylinders are right in line with everything else. This most likely reduced oil temps the most. My CHT's on #1 and #2 dropped around 30- 40 degrees by removing this section.
I also did some sealing around the front and back of the engine but I need to do alot more. I haven't even put any RTV between the cylinders and I have flown at gross to Bluff UT for the Red Bull races and just got back from some warm flying in AZ this weekend and my CHT's never went above 390 and my oil temp maxed at 210 when I was giving rides at Prescott (90 degree OAT). I have a long way to go to increase the cooling and I must admit, the difference those little changes made have amazed me. For now, I am not going to change anything other than to continue to find holes and gaps where the air can leak out. I still need to put the RTV between the cylinders but I have not stopped flying long enough to allow it to dry properly, but should have time this week.
Even though it is getting warmer here, my engine is actually running cooler now. Thanks Tim for the advice.
Scott Schmidt
scottmschmidt(at)yahoo.com
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