---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Sun 09/18/11: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 11:11 AM - Re: Single Liftstrut for FireFly... message for undoctor (Don G) 2. 02:49 PM - Thom, Chris or Jabiru owners (tkben002) 3. 05:26 PM - Re: Thom, Chris or Jabiru owners (ces308) 4. 05:32 PM - Re: Thom, Chris or Jabiru owners (ces308) 5. 05:39 PM - Re: Thom, Chris or Jabiru owners (tkben002) 6. 05:51 PM - Re: Thom, Chris or Jabiru owners (ces308) 7. 06:38 PM - Re: Thom, Chris or Jabiru owners (tkben002) 8. 06:49 PM - Re: Thom, Chris or Jabiru owners (ces308) ________________________________ Message 1 _____________________________________ Time: 11:11:29 AM PST US Subject: Kolb-List: Re: Single Liftstrut for FireFly... message for undoctor From: "Don G" HOLY COW HENRY!,,, that photo is one of the most fabulous I have ever seen...what a shot! And yes..the streamline tubing is alum from wicks, Cant remember what size..same as used on a CGS hawk tho, I remember that being a deciding factor for sizing it...(ask Kulpski to measure it)..and the steel is 4130 chrome-moly. -------- Don G. Central Illinois Kitfox IV Speedster Luscombe 8A Read this topic online here: http://forums.matronics.com/viewtopic.php?p=352593#352593 ________________________________ Message 2 _____________________________________ Time: 02:49:21 PM PST US Subject: Kolb-List: Thom, Chris or Jabiru owners From: "tkben002" I am at a point where I do not know what to do next. I have a Kolbra with a solid lifter Jabiru 2200 with 50 hrs on the engine and 25 on the plane. I have been battling a high cht temp on cylinders 3 and 4. I only have 2 cht probes and they are currently on #3 and 4 which are my hottest (#4) and coldest (#3). The coldest will hit around 260F in climb and cool off to about 200f in cruise. The hottest will hit 345 to 350f in climb then I generally lower the nose and cool it off alittle and at cruise will range from 315 to 330f. I can adjust these temps somewhat by tilting the carb back and forth and when the carb is close to center but not quite I can get even cht's on both cylinders in idle and up to about 1300 rpm while taxiing. Now, the harder part. My egt's have been about 100f apart and pretty consistent around 1100 on cylinders 2 and 4 and 1200 on cylinders 1 and 3. Last weekend a friend at the airport (with a sonex and 3300) noticed that I did not have a tube from the carb to the air filter and recommended that I put one in so, I did. Yesterday when I flew all was as usual except when I reached 100ft altitute my red light on the eis was going off and I was not expecting that. The EGT on cylinders 1 and 3 was up to 1450-1460 in full power climb and the egt on cylinders 2 and 4 what around 1380. As I began to throttle back and egts reduced when at pattern altitude and around 2700 rpm. The egt on cylinders 1 and 3 took longer and a little lower rpm to cool off back in the 1368 or less range. Next I commense to tilting the carb to adjust the fuel/air mixture to cylinders 1 and 3 to get the egts down and nothing I do makes any difference. It was recommended to reject the carb and I was handed a 283 jet and replaced the 276 that was in the carb. The main jet is a 255. I flew some more and the egts on cylinders 2 and 4 reduced to around 1225 to 1250 but the egts on cylinders 1 and 3 was still at 1450 in full power climb. I suspected a fuel flow issue so I tried the electric fuel pump and it made no difference either. I did not want to do any damage so I took off the air vent hose on the carb and went around the pattern and all was back to usual except when I reduced throttle in the pattern the engine started sputtering and I thought it was going to quit but It didnt. Needless to say but I think it was too rich so I jetted the carb back to the 276 that came with it and it went back to usual. Now I am back to square one. I know the mixture is rich and I am burning more than 4 gallons per hour and do not know what to do next. Thom and Chris, I know each of you have the jabiru 2200 on yours, any recommendations? I was told that since my BRS sits right in front of my carb that it could be causing some problems and that I should run a remote air filter with scat hose. Thanks, Travis Bennett Read this topic online here: http://forums.matronics.com/viewtopic.php?p=352604#352604 ________________________________ Message 3 _____________________________________ Time: 05:26:03 PM PST US Subject: Kolb-List: Re: Thom, Chris or Jabiru owners From: "ces308" Hello Travis, First of all....I have no idea what jet I have in my carb...and I only have cht and egt for 2 cylinders which to start with were on cyls 3 & 4 ( the ones toward the leading edge of the wing)..before I changed the cht to 1&2, cht's on 3 & 4 would run 260 - 280* ..but since I over headed my #2 cyl in a ground test run last winter I moved the cht's to 1 & 2 so I know what the back cylinders are doing...when you look at the picture I submitted, remember that the egt's are for the front cylinders and I suspect #4 is lower because the compression was lower in that cylinder and this winter I may clean up and re-ring that cylinder...how ever , since it doesn't burn a drop of oil now after redoing the #2 cylinder and at that rpm it seems to burn 3 gph,I may not do anything with it. I wish I had probs on all the cylinders... Tilting the carb WILL make a difference...after I got her together this summer I had the carb on straight and level and on climb at WOT my egt's went to 1390 and when throttled back went back down....after tilting the carb a couple of times I never had a problem. my cht 's even on 95* days stay at 320* and coming home the other evening the OAT was around 65-70 *. I'm not sure what to tell you,but hope this gives you something to shoot for...according to Jim at Jabiru Pacific I'm right in the ball park . chris ambrose M3X/Jabiru A-2200 225. hrs N327CS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=352613#352613 Attachments: http://forums.matronics.com//files/dash_746.jpg ________________________________ Message 4 _____________________________________ Time: 05:32:17 PM PST US Subject: Kolb-List: Re: Thom, Chris or Jabiru owners From: "ces308" Travis, What rpm are you running at 4 gph?? And I was told you have to have that tube going into the carb to make it work right... chris ambrose M3X/jab a 2200 N327cs Read this topic online here: http://forums.matronics.com/viewtopic.php?p=352614#352614 ________________________________ Message 5 _____________________________________ Time: 05:39:36 PM PST US Subject: Kolb-List: Re: Thom, Chris or Jabiru owners From: "tkben002" I am not sure what gph I am running but as I have not done the math because I have not kept good enough records for it, but I am sure it is over 4 gph right now. Now when I ran for 1.2 hours yesterday with the tube hooked to the carb and airfilter the engine ran better and seemed to have more power but I was really focused in on the high egt. I only have 2 egt and 2 cht probes and wish I had all 4. I moved mine from #1 and 2 in the back to the front 2 and that is where they are now as they were the fartherest apart. thanks, Travis Bennett Read this topic online here: http://forums.matronics.com/viewtopic.php?p=352615#352615 ________________________________ Message 6 _____________________________________ Time: 05:51:19 PM PST US Subject: Kolb-List: Re: Thom, Chris or Jabiru owners From: "ces308" Travis... I am confused.....your hottest cylinders are the ones at the front openings of the air scoops?? ( 3 & 4 ) ?? chris ambrose Read this topic online here: http://forums.matronics.com/viewtopic.php?p=352617#352617 ________________________________ Message 7 _____________________________________ Time: 06:38:14 PM PST US Subject: Kolb-List: Re: Thom, Chris or Jabiru owners From: "tkben002" Actually, my hottest cylinders are #2 and 4 with #4 being the hottest. My coldest is #3. It seems weird that my hottest cylinder is the one in front (fartherest away from the prop). Travis Bennett Read this topic online here: http://forums.matronics.com/viewtopic.php?p=352622#352622 ________________________________ Message 8 _____________________________________ Time: 06:49:41 PM PST US Subject: Kolb-List: Re: Thom, Chris or Jabiru owners From: "ces308" Travis... That is strange......I don't get it.....lets see what Thom thinks...Hmmmm... chris ambrose Read this topic online here: http://forums.matronics.com/viewtopic.php?p=352623#352623 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kolb-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kolb-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/kolb-list Browse Digests http://www.matronics.com/digest/kolb-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.