---------------------------------------------------------- JabiruEngine-List Digest Archive --- Total Messages Posted Tue 09/15/15: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:14 AM - Engine Choice (BobbyPaulk@comcast.net) 2. 09:32 AM - Re: Engine Choice (Pete Krotje) 3. 12:26 PM - Re: Engine Choice (GERALD A. APPLEFELD) ________________________________ Message 1 _____________________________________ Time: 06:14:39 AM PST US From: BobbyPaulk@comcast.net Subject: JabiruEngine-List: Engine Choice Bill A friend and I built ( 2 ) 601's side by side. His has a Continental O-200. When we started the engine break-in we adjusted his idle speed. We have not touched it since except for oil changes. My Jabiru 3300 has had high CHT's since day one. Can not get below 320 on rear cylinders. Carb jets were way off. I believe fuel distribution is still a problem. Tilt the carb one way and 5 gets high temp the other way and 6 goes high. I believe the early owners of the Jabiru were doing the Beta testing for the manufacturer. If you want to stay with the Jabiru design look at Camit Aero Engines. They manufactured the Jabiru for Jabiru for the last 18 to 20 years. They now have a rep in the USA. Their engine has all the updates ( including upgraded through bolts ) and some great new features like a 45 amp alternator. I have one on my Jab and it really is nice to be able to turn on all necessary electric appliances and not have to worry about burning up the PM alternator. A friend had to top his 3300 at less than 200 hours. Most all the rings were stuck from carbon build up. Don't get one with the slow closing lifters. I still wish I went with the O-200 Cont. Bobby Bobby ( age 77 ) Zodiac 601 XL "B" Jabiru 3300 S/N 1141 Sensenich 64" x 51" Prop Bing Carb 260 Main & 290 Needle Jet Status - Flying 248 hrs. Do Not Archive ________________________________ Message 2 _____________________________________ Time: 09:32:39 AM PST US From: "Pete Krotje" Subject: RE: JabiruEngine-List: Engine Choice Bobby, I=99m a little surprised at your comment. Why are you telling this man that you have high CHT when your highest is 320 which is 72 degrees below max? You say carb jets were way off =93 well of course they were as I=99ve told you many times the carbs are jetted for a Jabiru airplane and need to be changed to suit the aircraft the engine is installed in. I=99ve advised you to use the instructions on our web site to tune your carb but it doesn=99t seem like you=99ve taken that advice. We=99ve sold 500 engines & firewall forward kits to Zenith builders and I=99m not hearing these same problems from those who took the time to get their installation right. We=99re now seeing some of those engines back here for the 1000 hour top overhaul. Zenith=99s original installation on their demo 601 went well over 1000 hours with mostly routine maintenance. I think a little less time spent seeking advice from internet =9Cexperts=9D and more time spent doing what is needed on your airplane would help you a great deal. Pete Krotje Jabiru USA Sport Aircraft, LLC 931-680-2800 www.usjabiru.com Office Hours: Mon - Thur 9:00am to noon and 1:00pm to 4:00 pm Central Time Friday 9:00 am to 1:00pm Central Time From: owner-jabiruengine-list-server@matronics.com [mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of BobbyPaulk@comcast.net Sent: Tuesday, September 15, 2015 8:14 AM Subject: JabiruEngine-List: Engine Choice Bill A friend and I built ( 2 ) 601's side by side. His has a Continental O-200. When we started the engine break-in we adjusted his idle speed. We have not touched it since except for oil changes. My Jabiru 3300 has had high CHT's since day one. Can not get below 320 on rear cylinders. Carb jets were way off. I believe fuel distribution is still a problem. Tilt the carb one way and 5 gets high temp the other way and 6 goes high. I believe the early owners of the Jabiru were doing the Beta testing for the manufacturer. If you want to stay with the Jabiru design look at Camit Aero Engines. They manufactured the Jabiru for Jabiru for the last 18 to 20 years. They now have a rep in the USA. Their engine has all the updates ( including upgraded through bolts ) and some great new features like a 45 amp alternator. I have one on my Jab and it really is nice to be able to turn on all necessary electric appliances and not have to worry about burning up the PM alternator. A friend had to top his 3300 at less than 200 hours. Most all the rings were stuck from carbon build up. Don't get one with the slow closing lifters. I still wish I went with the O-200 Cont. Bobby Bobby ( age 77 ) Zodiac 601 XL "B" Jabiru 3300 S/N 1141 Sensenich 64" x 51" Prop Bing Carb 260 Main & 290 Needle Jet Status - Flying 248 hrs. Do Not Archive ________________________________ Message 3 _____________________________________ Time: 12:26:35 PM PST US Subject: Re: JabiruEngine-List: Engine Choice From: "GERALD A. APPLEFELD" I don't usually respond to the list but I second Pete's comments. I have an earlier 3300 (ser #531) on a Ch601HD. Yes there are some adjustments that need to be done for each instillation but once they are done the engine runs well and reliably. One comment that I disagree with is that rotating the carb changed the CHT's. Rotating the carb is to change the mixture due to the way the Bing air flows into the carb. It changes the EGT's not the CHT's. The CHT's are a function of air flow thru the RAM ducts and cowl. The early installers like me found that changing the air exit from the bottom of the cowl by making the opening larger and installing an aerodynamic lip at the bottom to increase negative pressure and "suck" the air outsolved most of the heating problems. The more airflow the lower the CHT's. Pete is the expert on the carb needle jets. I had to try several sizes before I found the correct jetting but now I am very happy. Each instillation even on similar planes, is different. I have over 400 hours on my 3300 and my CHT's are consistently in the 250-290 degree range and my EGT's are 1300 to 1400 and I burn about 5 GPH at 2740 RPM. Jerry On 9/15/2015 12:31 PM, Pete Krotje wrote: > > Bobby, > > Im a little surprised at your comment. > > Why are you telling this man that you have high CHT when your highest > is 320 which is 72 degrees below max? You say carb jets were way off > well of course they were as Ive told you many times the carbs are > jetted for a Jabiru airplane and need to be changed to suit the > aircraft the engine is installed in. Ive advised you to use the > instructions on our web site to tune your carb but it doesnt seem > like youve taken that advice. Weve sold 500 engines & firewall > forward kits to Zenith builders and Im not hearing these same > problems from those who took the time to get their installation > right. Were now seeing some of those engines back here for the 1000 > hour top overhaul. Zeniths original installation on their demo 601 > went well over 1000 hours with mostly routine maintenance. > > I think a little less time spent seeking advice from internet > experts and more time spent doing what is needed on your airplane > would help you a great deal. > > Bill > > A friend and I built ( 2 ) 601's side by side. > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message jabiruengine-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/JabiruEngine-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/jabiruengine-list Browse Digests http://www.matronics.com/digest/jabiruengine-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.