---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Sun 02/03/19: 7 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 10:11 AM - Oil temps (greg.barnhard@gmail.com) 2. 02:21 PM - Re: Oil temps (Anthony Savarese) 3. 03:44 PM - Re: Oil temps (Brian Macey) 4. 04:21 PM - Re: Oil temps (l129bs@gmail.com) 5. 04:43 PM - Re: Oil temps (greg.barnhard@gmail.com) 6. 05:21 PM - Re: Re: Oil temps (Anthony Savarese) 7. 06:45 PM - Re: Oil temps (greg.barnhard@gmail.com) ________________________________ Message 1 _____________________________________ Time: 10:11:29 AM PST US Subject: Yak-List: Oil temps From: "greg.barnhard@gmail.com" Heres one Im trying to wrap my head around. In the past, on my Yak 52W, my oil temps always seemed normal. They would take a little bit of time to warm up but I could easily control them and keep them in the middle of the green arc (oil in temp). In the summer I could run without a blocker plate and then as it got progressively colder I would use different blocker plates with different levels of blockage on the oil cooler face. No problems keeping it at least 120 no matter how cold it got (New Yorker here). Fast forward, I did a top overhaul on my engine and replaced all of the flexible lines on the airplane, and no matter what Im lucky if I can keep the oil temps in the green. Even on a 60-70F day I would have to use a full blocker plate on the cooler to get the oil temp up. I could get it warm for a Runup to about 110F. On takeoff with full power the oil temps would plummet down to 90F or lower. They wouldnt start to come up until I close the cowl shutters a bit then I could get them to 110-120F. If I didnt use a blocker plate the oil temps would be anywhere from 90-100F the entire flight. I know that Im lucky that the temps arent too high but low oil temps are concerning to me. In the winter time Im lucky to have 120F. And thats with the full blocker plate and the oil door full closed. When I go in to land and start reducing the power the oil temp drops. By the time I hit the ground its indicating 75F or so. Any guesses or am I just stuck with it? I dont believe I have a vernatherm in my cooler. Im fairly certain its just a bypass valve. Is it possible its stuck and not letting oil bypass the cooler as it gets cold and thick? Thanks for the insight. Greg Read this topic online here: http://forums.matronics.com/viewtopic.php?p=487410#487410 ________________________________ Message 2 _____________________________________ Time: 02:21:46 PM PST US From: Anthony Savarese Subject: Re: Yak-List: Oil temps Regarding the top overhaul, are the cylinders, pistons and rings all stock? Not that it could be the cause of the problem. Im just curious. How many hours on the top overhaul now? Dennis Sent from my iPhone > On Feb 3, 2019, at 1:11 PM, "greg.barnhard@gmail.com" wrote: > > > Heres one Im trying to wrap my head around. > > In the past, on my Yak 52W, my oil temps always seemed normal. They would take a little bit of time to warm up but I could easily control them and keep them in the middle of the green arc (oil in temp). In the summer I could run without a blocker plate and then as it got progressively colder I would use different blocker plates with different levels of blockage on the oil cooler face. No problems keeping it at least 120 no matter how cold it got (New Yorker here). > > Fast forward, I did a top overhaul on my engine and replaced all of the flexible lines on the airplane, and no matter what Im lucky if I can keep the oil temps in the green. Even on a 60-70F day I would have to use a full blocker plate on the cooler to get the oil temp up. I could get it warm for a Runup to about 110F. On takeoff with full power the oil temps would plummet down to 90F or lower. They wouldnt start to come up until I close the cowl shutters a bit then I could get them to 110-120F. If I didnt use a blocker plate the oil temps would be anywhere from 90-100F the entire flight. > > I know that Im lucky that the temps arent too high but low oil temps are concerning to me. In the winter time Im lucky to have 120F. And thats with the full blocker plate and the oil door full closed. When I go in to land and start reducing the power the oil temp drops. By the time I hit the ground its indicating 75F or so. > > Any guesses or am I just stuck with it? I dont believe I have a vernatherm in my cooler. Im fairly certain its just a bypass valve. Is it possible its stuck and not letting oil bypass the cooler as it gets cold and thick? > > Thanks for the insight. > > Greg > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=487410#487410 > > > > > > > > > ________________________________ Message 3 _____________________________________ Time: 03:44:28 PM PST US From: Brian Macey Subject: Re: Yak-List: Oil temps Greg, I also have a 52TW. I lived in Colorado and have flown the airplane and cold weather, never had a problem like you described. More often it =99s a problem keeping it cool and warm weather; in any case, I would suspect the temperature gage is malfunctioning. Good luck and let us know what fixes it. On Sun, Feb 3, 2019 at 2:27 PM Anthony Savarese wrote: > dsavarese0812@bellsouth.net> > > Regarding the top overhaul, are the cylinders, pistons and rings all > stock? Not that it could be the cause of the problem. I=99m just c urious. > > How many hours on the top overhaul now? > Dennis > > Sent from my iPhone > > > On Feb 3, 2019, at 1:11 PM, "greg.barnhard@gmail.com" < > greg.barnhard@gmail.com> wrote: > > > greg.barnhard@gmail.com> > > > > Here=99s one I=99m trying to wrap my head around. > > > > In the past, on my Yak 52W, my oil temps always seemed normal. They > would take a little bit of time to warm up but I could easily control the m > and keep them in the middle of the green arc (oil in temp). In the summer I > could run without a blocker plate and then as it got progressively colder I > would use different blocker plates with different levels of blockage on t he > oil cooler face. No problems keeping it at least 120 no matter how cold i t > got (New Yorker here). > > > > Fast forward, I did a top overhaul on my engine and replaced all of the > flexible lines on the airplane, and no matter what I=99m lucky if I can keep > the oil temps in the green. Even on a 60-70F day I would have to use a fu ll > blocker plate on the cooler to get the oil temp up. I could get it warm f or > a Runup to about 110F. On takeoff with full power the oil temps would > plummet down to 90F or lower. They wouldn=99t start to come up unti l I close > the cowl shutters a bit then I could get them to 110-120F. If I didn =99t use > a blocker plate the oil temps would be anywhere from 90-100F the entire > flight. > > > > I know that I=99m lucky that the temps aren=99t too high bu t low oil temps > are concerning to me. In the winter time I=99m lucky to have 120F. And that=99s > with the full blocker plate and the oil door full closed. When I go in to > land and start reducing the power the oil temp drops. By the time I hit t he > ground it=99s indicating 75F or so. > > > > Any guesses or am I just stuck with it? I don=99t believe I have a > vernatherm in my cooler. I=99m fairly certain it=99s just a b ypass valve. Is it > possible it=99s stuck and not letting oil bypass the cooler as it g ets cold > and thick? > > > > Thanks for the insight. > > > > Greg > > > > > > > > > > Read this topic online here: > > > > http://forums.matronics.com/viewtopic.php?p=487410#487410 > > > > > > > > > > > > > > > > > > > > =========== =========== =========== =========== =========== > > ________________________________ Message 4 _____________________________________ Time: 04:21:35 PM PST US From: l129bs@gmail.com Subject: Re: Yak-List: Oil temps We use to know a guy named Macey.... > On Feb 3, 2019, at 5:43 PM, Brian Macey wrote: > > Greg, > > I also have a 52TW. I lived in Colorado and have flown the airplane and co ld weather, never had a problem like you described. More often it=99s a problem keeping it cool and warm weather; in any case, I would suspect the t emperature gage is malfunctioning. Good luck and let us know what fixes it. > >> On Sun, Feb 3, 2019 at 2:27 PM Anthony Savarese wrote: .net> >> >> Regarding the top overhaul, are the cylinders, pistons and rings all stoc k? Not that it could be the cause of the problem. I=99m just curious. >> >> How many hours on the top overhaul now? >> Dennis >> >> Sent from my iPhone >> >> > On Feb 3, 2019, at 1:11 PM, "greg.barnhard@gmail.com" wrote: >> > d@gmail.com> >> > >> > Here=99s one I=99m trying to wrap my head around. >> > >> > In the past, on my Yak 52W, my oil temps always seemed normal. They wou ld take a little bit of time to warm up but I could easily control them and k eep them in the middle of the green arc (oil in temp). In the summer I could run without a blocker plate and then as it got progressively colder I would use different blocker plates with different levels of blockage on the oil c ooler face. No problems keeping it at least 120 no matter how cold it got (N ew Yorker here). >> > >> > Fast forward, I did a top overhaul on my engine and replaced all of the flexible lines on the airplane, and no matter what I=99m lucky if I c an keep the oil temps in the green. Even on a 60-70F day I would have to use a full blocker plate on the cooler to get the oil temp up. I could get it w arm for a Runup to about 110F. On takeoff with full power the oil temps woul d plummet down to 90F or lower. They wouldn=99t start to come up until I close the cowl shutters a bit then I could get them to 110-120F. If I did n=99t use a blocker plate the oil temps would be anywhere from 90-100F the entire flight. >> > >> > I know that I=99m lucky that the temps aren=99t too high bu t low oil temps are concerning to me. In the winter time I=99m lucky t o have 120F. And that=99s with the full blocker plate and the oil door full closed. When I go in to land and start reducing the power the oil temp drops. By the time I hit the ground it=99s indicating 75F or so. >> > >> > Any guesses or am I just stuck with it? I don=99t believe I have a vernatherm in my cooler. I=99m fairly certain it=99s just a byp ass valve. Is it possible it=99s stuck and not letting oil bypass the c ooler as it gets cold and thick? >> > >> > Thanks for the insight. >> > >> > Greg >> > >> > >> > >> > >> > Read this topic online here: >> > >> > http://forums.matronics.com/viewtopic.php?p=487410#487410 >> > >> > >> > >> > >> > >> > >> > >> > >> > >> >> >> ========== >> List" rel="noreferrer" target="_blank">http://www.matronics.com/Navig ator?Yak-List >> ========== >> FORUMS - >> eferrer" target="_blank">http://forums.matronics.com >> ========== >> WIKI - >> errer" target="_blank">http://wiki.matronics.com >> ========== >> b Site - >> -Matt Dralle, List Admin. >> rel="noreferrer" target="_blank">http://www.matronics.com/contributio n >> ========== >> >> >> ________________________________ Message 5 _____________________________________ Time: 04:43:46 PM PST US Subject: Yak-List: Re: Oil temps From: "greg.barnhard@gmail.com" I ave three independent oil temp gauges reading identically. The probes have all been tested and are accurate. Dennis, it is not stock. I have Barrett pistons and rings. At the present time there are 80 hours since the top. The first flight I did after the top, I expected high oil temps and had quite the opposite. Thanks, Greg Read this topic online here: http://forums.matronics.com/viewtopic.php?p=487420#487420 ________________________________ Message 6 _____________________________________ Time: 05:21:09 PM PST US From: Anthony Savarese Subject: Re: Yak-List: Re: Oil temps Are any of the 3 gauges reading the oil temp coming out of the oil cooler/going into the oil tank? Or are all reading the oil temp coming from the oil tank and going into the oil pump? Dennis Sent from my iPhone > On Feb 3, 2019, at 7:43 PM, "greg.barnhard@gmail.com" wrote: > > > I ave three independent oil temp gauges reading identically. The probes have all been tested and are accurate. > > Dennis, it is not stock. I have Barrett pistons and rings. At the present time there are 80 hours since the top. > > The first flight I did after the top, I expected high oil temps and had quite the opposite. > > Thanks, > Greg > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=487420#487420 > > > > > > > > > ________________________________ Message 7 _____________________________________ Time: 06:45:40 PM PST US Subject: Yak-List: Re: Oil temps From: "greg.barnhard@gmail.com" All three read oil in from the tank to the engine. The third temp probe is also mounted in the oil canister where the other two oil temp probes are installed. Greg Read this topic online here: http://forums.matronics.com/viewtopic.php?p=487424#487424 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message yak-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Yak-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/yak-list Browse Digests http://www.matronics.com/digest/yak-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.