I have flow behind several O-200 and none of them have had an oil cooler. I've never really had a temp problem out of them, but they have all been on C150s. I do remember seeing a mod at one point in time that added fins to the spin on filter to help cool a little more but I can't find it now.
On Wed, May 30, 2018 at 7:21 PM, Jeff Scott via KRnet <krnet@list.krnet.org> wrote: > > ------------------ > Hi all, > This question is for anyone who has flown behind the 0-200, did your > aircraft have an oil cooler? For anyone that perhaps changed their system, > either to or from, did you notice any significant difference? > I currently own a Davis DA-2, and it has an oil cooler, mounted to the > side of the lower cowling next to some vents. I would like to install an > oil filter system, which would mean removing the oil cooler to mount the > oil filter assembly. I have only flown it in the fall and over the winter, > the temperatures were cool, maybe even a little too cool. But I haven't > flown in the heat of summer so i do not know if the extra cooling is > necessary. > It appears the oil cooler was originally attached to the rear of the > cylinder baffles, then moved at some point to its current position. I know > the plane was originally built in Florida, but most of the year we aren't > as warm here. (though last weekend we broke hi temp records at a > "blistering" pace, 103 degrees in May in Nebraska, yikes). > Please share thoughts/opinions/experiences... > Thanks! > TJ > ----------------------- > > While the O-200 was designed by Continental to accommodate an oil cooler, > very few applications ever required it. The most popular plane to use an > O-200 was the Cessna 150, and it did not use an oil cooler. There was an > opening just below the spinner to supply air, and a baffle under the engine > to direct that air along the bottom of the engine and onto the oil tank. > That was generally sufficient to keep the engine within spec for the oil > temp. On my KR, I didn't use the lower baffling or provide the inlet hole, > but instead built a standard air box inside the carb air inlet area with > sufficient room to spill air over the sides of the air box to cool the oil > tank. Outside of that, my engine is very tightly cowled. Worst case I've > seen in New Mexico with extended summer time climbs to altitudes >12,000', > I saw oil temps top out at up to 225°, and that is while using Emags that > are pushing the engine timing up to 39° BTDC. That is still in the green > for the O-200, and about as extreme as I could possibly do to this engine. > My typical summertime oil temps usually top out at 210° on climb, then drop > back to 200° during cruise. While I know a couple of the newer KRs out > there are using oil coolers on their O-200s, I suspect they were installed > more as an abundance of caution than necessity. After 1200 hrs operation in > my KR, I don't see the need to carry the weight of an oil cooler for an > O-200 on a KR. If the oil temps are running high, a little air supplied to > the front of the oil tank should address the issue. > > -Jeff Scott > Cherokee Village, AR > > _______________________________________________ > Search the KRnet Archives at https://www.mail-archive.com/ > krnet@list.krnet.org/. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options. > To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org > -- Jason Brooks _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
