---------------------------------------------------------- RV8-List Digest Archive --- Total Messages Posted Sat 06/04/11: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:12 AM - Re: High Oil Temp Issues - RV-8A (Bubblehead) 2. 07:10 AM - Re: High Oil Temp Issues - RV-8A (Carl Froehlich) 3. 09:14 AM - Re: Re: High Oil Temp Issues - RV-8A (Robin Marks) ________________________________ Message 1 _____________________________________ Time: 05:12:25 AM PST US Subject: RV8-List: Re: High Oil Temp Issues - RV-8A From: "Bubblehead" With that huge cooler and big air duct you should be cooling like mad! You mention fuel injection issues. Are you sure you are not running lean? I have an -8 and live in TX so similar or worse OATs. Standard baffles and slightly larger cooler on the baffle per plans. I sometimes see 210 oil and 405 CHT on a long climb but at 23/23 once in cruise I would expect 190 and 340 for temps. Something is not right because there are hundreds or thousands of 8As out there with a lower capacity cooling system than yours flying in the heat without a problem. -------- John Keller, TX RV-8 N247TD Read this topic online here: http://forums.matronics.com/viewtopic.php?p=342033#342033 ________________________________ Message 2 _____________________________________ Time: 07:10:08 AM PST US From: "Carl Froehlich" Subject: RE: RV8-List: High Oil Temp Issues - RV-8A On the ceramic coating - I have this on my 8A as well as the 10 and recommend it. To solve the "not enough cabin heat" problem you have on your 10, put a stainless steel pot scrubber in the heat muffs. The pad(s) adds a huge amount of heat transfer area and slows down the air speed and volume. This has two effects. You end up with cabin heat much hotter but at a lower volume - overall more heat. The second effect is you significantly reduce the amount of cooling air are you bleeding off the plenum and in summertime dumping right into the lower cowl area - thus reducing pressure in the plenum and adding pressure to the area you want at the lowest possible pressure to get the most cooling air through the engine and oil cooler. Don't worry, you still have plenty of air going through the cabin heat scat hoses to not overheat anything. You may want to look at this on the 8A as a way to reduce air bleed from the plenum. Carl From: owner-rv8-list-server@matronics.com [mailto:owner-rv8-list-server@matronics.com] On Behalf Of Robin Marks Sent: Friday, June 03, 2011 6:58 PM Subject: RE: RV8-List: High Oil Temp Issues - RV-8A Thanks for all the replies so far. To recap: . Seams, joints, edges are sealed well. . Vernatherm has been tested & working properly . Double checked the oil lines for blockage etc... No issues. . We drained the oil and filled again at oil change. Because the oil cooler is not inverted it is easy to load up with oil. We doubt there is air trapped in the cooler. . No EMS issues and no grounding issues as all readings are stable and believable. . System is Dual Garmin G3X EFIS/EMS . Mag timing is dead nuts on. Other side is P-Mag (that runs amazing on P-Mag only) . RE: the 2006 Oil Cooler I can attest to the quality of these coolers as I have the 2008 on my -10. It's just a brute force way of solving this problem. I really doubt I can get 25 degrees out of the 2006. . Re: ceramic coating on the exhaust. Never again. I have the beautiful Forsling Exhaust with ceramic coating on my -10 but the one LARGE drawback is I can't get any Cabin Heat out of the exhaust which is amazing if you ask most -10 owners. Half heat can cook a small turkey. Dave/Mike's suggestion of increasing the outlet area and/or louvers may be a good way to go. That provided the most profound decrease in oil temps for our -10. Thanks, Robin -----Original Message----- From: owner-rv8-list-server@matronics.com [mailto:owner-rv8-list-server@matronics.com] On Behalf Of George, Neal Capt 505 TRS/DOJ Sent: Friday, June 03, 2011 12:22 PM Subject: RE: RV8-List: High Oil Temp Issues - RV-8A Robin - I hate to point to the obvious, but: All baffle joints, seams, edges, holes, penetrations sealed? Vernatherm working properly? No blockage in oil cooler or lines? No air trapped in the oil cooler high corners? neal mp; Download, 7-Day Browse, Chat, FAQ, href="http://www.matronics.com/Navigator?RV8-List">http://www.matronics.com/ Navigator?RV8-List - MATRONICS WEB FORUMS - http://forums.matronics.com -Matt Dralle, List Admin. s.com/contribution">http://www.matronics.com/contribution ----- No virus found in this message. Checked by AVG - www.avg.com Release Date: 06/03/11 ________________________________ Message 3 _____________________________________ Time: 09:14:40 AM PST US From: Robin Marks Subject: RE: RV8-List: Re: High Oil Temp Issues - RV-8A Update We removed some cylinder dams we had placed in & around some of the cylinders and cleaned up a few things. High CHT's are no longer the issue other than preferring a little better temp balance between the cylinders. Oil Temps are our problem. I expect a significant portion of this will be resolved once we open up the underside of the cowl. Just not enough outlet area from what we can tell. Thanks everyone! Robin -----Original Message----- From: owner-rv8-list-server@matronics.com [mailto:owner-rv8-list-server@matronics.com] On Behalf Of Bubblehead Sent: Saturday, June 04, 2011 5:09 AM Subject: RV8-List: Re: High Oil Temp Issues - RV-8A With that huge cooler and big air duct you should be cooling like mad! You mention fuel injection issues. Are you sure you are not running lean? I have an -8 and live in TX so similar or worse OATs. Standard baffles and slightly larger cooler on the baffle per plans. I sometimes see 210 oil and 405 CHT on a long climb but at 23/23 once in cruise I would expect 190 and 340 for temps. Something is not right because there are hundreds or thousands of 8As out there with a lower capacity cooling system than yours flying in the heat without a problem. -------- John Keller, TX RV-8 N247TD Read this topic online here: http://forums.matronics.com/viewtopic.php?p=342033#342033 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv8-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV8-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/rv8-list Browse Digests http://www.matronics.com/digest/rv8-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.