I co-builder friend of mine has looked into a company called Shaefer Oil. Spelling could be wrong, however it has been formulated for air cooled engines particularly motorcycles. Test have proven a decrease in head temperature for identical engines at same conditions. It is not cheap! but, neither is a taxi at 5,000 feet!! Friction is reduced according to the tests obviously. Check it out.
On Wed, Apr 27, 2016 at 10:02 AM, Gary Hinkle via KRnet < krnet at list.krnet.org> wrote: > > > Increased oil flow would help. But where are you going to get the oil > from? The liquid cooled heads are cooled from within. To pump a lot of oil > into the rocker covers could cause problems. Plus all that oil.has to get > back into the crank case. Oil provides 30 to 40 percent of engine cooling > by drawing heat away from components. That heat is then shead while in the > oil pan. Control temperature of the oil first. Oil breaks down fast the > hotter it gets.Engine baffling is very important. Stop and think about it. > A lot of VW engines have been out flying with no problems over the years. > ENGINE/POWER MANAGEMENT. One of the first things you learn when flying big > engines. Power and temps go hand in hand.Gary Hinkle Ex Corp pilot and A&P. > > > Sent from my Verizon Wireless 4G LTE smartphone > > -------- Original message -------- > From: Chris Prata via KRnet <krnet at list.krnet.org> > Date: 04/27/2016 02:40 (GMT-05:00) > To: krnet at list.krnet.org > Cc: Chris Prata <chrisprata at live.com> > Subject: KR> FW: Type 1 Cylinder Heads - cooling > > thats an interesting angle. your oil post also reminded me I was going to > ask about *additional* oil to cool the heads, as in a high vol oil pump, > and an oil line to each head spraying oil on the hottest area (between the > valves?). > would that almost make them "liquid cooled heads"? > > Date: Tue, 26 Apr 2016 12:28:29 -0500 > Subject: Re: KR> Type 1 Cylinder Heads > From: lrffrench at gmail.com > To: krnet at list.krnet.org > CC: chrisprata at live.com > > > > Hi KR league, of all the discussions that are so important about > controlling heat, I am surprised that so little discussion of oil happens. > This is a big decision. My research for my 1835 vw and oil has led me to > Quaker State DEFY. I am running the 10w30 and the API-SL class. This is a > semi- synthetic with boosted zinc for anti-friction. In aircraft we can't > use a full synthetic because lead in av-gas will destroy the anti-friction > adds in the pure synthetics. Even if we plan to use mogas primarily, there > may be the need to use av-gas all of which have high lead. The molecule > size in synthetics, even the blends, is smaller and is known to run cooler. > Note: Quaker State DEFY is in almost identical containers with API-SN > class oil. (Strange). SN doesn't have the boosted Zinc. You have to read > the small print to get API-SL. The SN class has been made for the auto > engines with catalytic converters because the high zinc has been known to > ruin the catalytic converters. Since aviation > does use them (yet), we can benefit from the zinc friction reduction. > Hope this isn't noise on many of the great signals I read everyday from you > pros.Cheers,Rene Ffrench N44774. Austin, Texas > > > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options >
