---------------------------------------------------------- JabiruEngine-List Digest Archive --- Total Messages Posted Fri 03/20/15: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:10 AM - Re: Timing (James Clive) 2. 04:17 AM - Re: Timing (curts63) 3. 07:45 AM - Re: Timing (Pete Krotje) 4. 11:22 AM - Re: Timing (James Clive) 5. 12:08 PM - Re: Timing (Pete Krotje) ________________________________ Message 1 _____________________________________ Time: 04:10:41 AM PST US From: James Clive Subject: Re: JabiruEngine-List: Timing I had problems and adjusted the timing a few times, turned out to be the magnets so do the =98pull test=99 to make sure. =46rom your comments below and from what I remember. The rotors don=99t look parallel to each other when they are in the correct position. See pictures. You can see this without taking it all apart again look from left side of engine with dizzy caps out of the way. With the engine at 25 deg BTC the rotor arms 'leading edge' of the metal bit must be in line with the timing marks. See ruler against mark in the not very well taken picture. Not the middle of the metal tab but the leading edge. right in the picture I think, might be left, move the engine to see which way the rotors move forward. JEM explains it like this: and provided the timing mark lines up with the tip of the cap it will work properly I think I sussed out =98tip of the cap=99 meant leading edge of the metal bit. Find TDC with screwdriver down the plug hole and then wind the engine back 25 degrees. That is 30mm measured on the prop hub circumference (hub is 140mm dia) 140 * 3.142, /360x25??? The gearing is such that one tooth will put it out enough to see so you know whether you have it right. That=99s what I recall and it was a few months ago so sorry if I got any of it wrong. Of course if it=99s nothing to do with the timing then good luck! Regards, Clive > On 20 Mar 2015, at 01:19, BobbyPaulk@comcast.net wrote: > > List > I am need of help. > I had the flywheel and the back end of the engine removed to make repairs. The drives for both mags were removed and re-installed. ( I didn't need to do this but it was too late when I realized it. ) > I purchased a degree wheel and found TDC of No. 1 by going about 30 degrees before and 30 degrees past ( measuring the piston down travel the same ) and splitting the difference to find the center of the dead spot. I lined up both rotor buttons with the timing marks on the side of the distributor support at 25 deg. BTC and made sure they were parallel. We did this about 12 to 15 times until we were satisfied it was correct. When the engine is at TDC on #1 the rotors are pointing to #1 on the distributor cap. > I used a Honda Coil on the right side and the Rotec E-Mag on the left. > The engine started but ran very, very rough and sounded like it was out of time. It also would not run with the choke off nor would it take the throttle. We used fresh 100 LL and took the bowl off the carb and made sure we had plenty of fuel flow with the elec. boost pump. > The engine would start easily but ran very rough and would not take the throttle even after warm up. Outside temp was 72 F. deg. > Going to either one mag made no difference in how the engine ran although you could hear a little drop in RPM. > Can anyone offer a solution. I sure do not want to remove the engine and flywheel and start over. Could I be a tooth off on the distributors?? > The carb was removed from the rubber connector and left on the aircraft while the engine was removed and on a stand and not touched during this time ( all linkage remained in tact. > > Bobby > > Zodiac 601 XL "B" > Jabiru 3300 S/N 1141 > Sensenich 64" x 51" Prop > Bing Carb 260 Main & 290 Needle Jet > Status - Flying 236 hrs. > > > ________________________________ Message 2 _____________________________________ Time: 04:17:48 AM PST US Subject: JabiruEngine-List: Re: Timing From: "curts63" Not being an expert or even a beginner in Jabiru engines, my only question would be, are you on TDC for the compression stroke? Read this topic online here: http://forums.matronics.com/viewtopic.php?p=439662#439662 ________________________________ Message 3 _____________________________________ Time: 07:45:15 AM PST US From: "Pete Krotje" Subject: RE: JabiruEngine-List: Timing Bobby, 1. Find TDC on the compression stroke. 2. Make a mark on one of the flywheel teeth and the gearcase cover. 3. Count seven teeth on the flywheel in the direction of rotation (clockwise) and make another mark on that tooth 4. Then turn the crankshaft (prop) counter clockwise (opposite of the direction of rotation) until the second mark lines up with the first reference mark on the gearcase. 5. Set the distributor shafts so that the rotor points to the timing mark on the distributor base. You will most likely have to remove the flywheel anyway as you will have to lift the gearcase cover to change the distributor alighment. Lifting the cover will break the Loctite 515 seal so you will have to reapply the Loctite. If you remove the flywheel: 1. Line up the timing marks on the crank gear and cam gear. 2. Temporarily put the flywheel in place. 3. Turn the crankshaft backwards seven teeth 4. Remove the flywheel 5. Install the gearcase cover setting the distributor shafts so the rotor points to the timing mark as you install the cover 6. Reinstall flywheel Hope this helps 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: Thursday, March 19, 2015 8:20 PM Subject: JabiruEngine-List: Timing List I am need of help. I had the flywheel and the back end of the engine removed to make repairs. The drives for both mags were removed and re-installed. ( I didn't need to do this but it was too late when I realized it. ) I purchased a degree wheel and found TDC of No. 1 by going about 30 degrees before and 30 degrees past ( measuring the piston down travel the same ) and splitting the difference to find the center of the dead spot. I lined up both rotor buttons with the timing marks on the side of the distributor support at 25 deg. BTC and made sure they were parallel. We did this about 12 to 15 times until we were satisfied it was correct. When the engine is at TDC on #1 the rotors are pointing to #1 on the distributor cap. I used a Honda Coil on the right side and the Rotec E-Mag on the left. The engine started but ran very, very rough and sounded like it was out of time. It also would not run with the choke off nor would it take the throttle. We used fresh 100 LL and took the bowl off the carb and made sure we had plenty of fuel flow with the elec. boost pump. The engine would start easily but ran very rough and would not take the throttle even after warm up. Outside temp was 72 F. deg. Going to either one mag made no difference in how the engine ran although you could hear a little drop in RPM. Can anyone offer a solution. I sure do not want to remove the engine and flywheel and start over. Could I be a tooth off on the distributors?? The carb was removed from the rubber connector and left on the aircraft while the engine was removed and on a stand and not touched during this time ( all linkage remained in tact. Bobby Zodiac 601 XL "B" Jabiru 3300 S/N 1141 Sensenich 64" x 51" Prop Bing Carb 260 Main & 290 Needle Jet Status - Flying 236 hrs. ________________________________ Message 4 _____________________________________ Time: 11:22:39 AM PST US From: James Clive Subject: Re: JabiruEngine-List: Timing Pete, middle left or right side of rotor?, metal bit is about 10mm wide, what does =98points' at mean ? 'so the rotor points to the timing mark' ta, Clive > On 20 Mar 2015, at 14:44, Pete Krotje wrote: > > Bobby, > 1. Find TDC on the compression stroke. > 2. Make a mark on one of the flywheel teeth and the gearcase cover. > 3. Count seven teeth on the flywheel in the direction of rotation (clockwise) and make another mark on that tooth > 4. Then turn the crankshaft (prop) counter clockwise (opposite of the direction of rotation) until the second mark lines up with the first reference mark on the gearcase. > 5. Set the distributor shafts so that the rotor points to the timing mark on the distributor base. > You will most likely have to remove the flywheel anyway as you will have to lift the gearcase cover to change the distributor alignment. Lifting the cover will break the Loctite 515 seal so you will have to reapply the Loctite. If you remove the flywheel: > 1. Line up the timing marks on the crank gear and cam gear. > 2. Temporarily put the flywheel in place. > 3. Turn the crankshaft backwards seven teeth > 4. Remove the flywheel > 5. Install the gearcase cover setting the distributor shafts so the rotor points to the timing mark as you install the cover > 6. Reinstall flywheel > Hope this helps > > 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: Thursday, March 19, 2015 8:20 PM > To: Server, JabiruEngine-List Digest > Subject: JabiruEngine-List: Timing > > List > I am need of help. > I had the flywheel and the back end of the engine removed to make repairs. The drives for both mags were removed and re-installed. ( I didn't need to do this but it was too late when I realized it. ) > I purchased a degree wheel and found TDC of No. 1 by going about 30 degrees before and 30 degrees past ( measuring the piston down travel the same ) and splitting the difference to find the center of the dead spot. I lined up both rotor buttons with the timing marks on the side of the distributor support at 25 deg. BTC and made sure they were parallel. We did this about 12 to 15 times until we were satisfied it was correct. When the engine is at TDC on #1 the rotors are pointing to #1 on the distributor cap. > I used a Honda Coil on the right side and the Rotec E-Mag on the left. > The engine started but ran very, very rough and sounded like it was out of time. It also would not run with the choke off nor would it take the throttle. We used fresh 100 LL and took the bowl off the carb and made sure we had plenty of fuel flow with the elec. boost pump. > The engine would start easily but ran very rough and would not take the throttle even after warm up. Outside temp was 72 F. deg. > Going to either one mag made no difference in how the engine ran although you could hear a little drop in RPM. > Can anyone offer a solution. I sure do not want to remove the engine and flywheel and start over. Could I be a tooth off on the distributors?? > The carb was removed from the rubber connector and left on the aircraft while the engine was removed and on a stand and not touched during this time ( all linkage remained in tact. > > Bobby > > Zodiac 601 XL "B" > Jabiru 3300 S/N 1141 > Sensenich 64" x 51" Prop > Bing Carb 260 Main & 290 Needle Jet > Status - Flying 236 hrs. > > > http://www.matronics.com/Navigator?JabiruEngine-List > http://forums.matronics.com > http://www.matronics.com/contribution > > > > ________________________________ Message 5 _____________________________________ Time: 12:08:56 PM PST US From: "Pete Krotje" Subject: RE: JabiruEngine-List: Timing It does not matter. From: owner-jabiruengine-list-server@matronics.com [mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of James Clive Sent: Friday, March 20, 2015 1:22 PM Subject: Re: JabiruEngine-List: Timing Pete, middle left or right side of rotor?, metal bit is about 10mm wide, what does =98points' at mean ? 'so the rotor points to the timing mark' ta, Clive On 20 Mar 2015, at 14:44, Pete Krotje wrote: Bobby, 1. Find TDC on the compression stroke. 2. Make a mark on one of the flywheel teeth and the gearcase cover. 3. Count seven teeth on the flywheel in the direction of rotation (clockwise) and make another mark on that tooth 4. Then turn the crankshaft (prop) counter clockwise (opposite of the direction of rotation) until the second mark lines up with the first reference mark on the gearcase. 5. Set the distributor shafts so that the rotor points to the timing mark on the distributor base. You will most likely have to remove the flywheel anyway as you will have to lift the gearcase cover to change the distributor alignment. Lifting the cover will break the Loctite 515 seal so you will have to reapply the Loctite. If you remove the flywheel: 1. Line up the timing marks on the crank gear and cam gear. 2. Temporarily put the flywheel in place. 3. Turn the crankshaft backwards seven teeth 4. Remove the flywheel 5. Install the gearcase cover setting the distributor shafts so the rotor points to the timing mark as you install the cover 6. Reinstall flywheel Hope this helps 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: Thursday, March 19, 2015 8:20 PM Subject: JabiruEngine-List: Timing List I am need of help. I had the flywheel and the back end of the engine removed to make repairs. The drives for both mags were removed and re-installed. ( I didn't need to do this but it was too late when I realized it. ) I purchased a degree wheel and found TDC of No. 1 by going about 30 degrees before and 30 degrees past ( measuring the piston down travel the same ) and splitting the difference to find the center of the dead spot. I lined up both rotor buttons with the timing marks on the side of the distributor support at 25 deg. BTC and made sure they were parallel. We did this about 12 to 15 times until we were satisfied it was correct. When the engine is at TDC on #1 the rotors are pointing to #1 on the distributor cap. I used a Honda Coil on the right side and the Rotec E-Mag on the left. The engine started but ran very, very rough and sounded like it was out of time. It also would not run with the choke off nor would it take the throttle. We used fresh 100 LL and took the bowl off the carb and made sure we had plenty of fuel flow with the elec. boost pump. The engine would start easily but ran very rough and would not take the throttle even after warm up. Outside temp was 72 F. deg. Going to either one mag made no difference in how the engine ran although you could hear a little drop in RPM. Can anyone offer a solution. I sure do not want to remove the engine and flywheel and start over. Could I be a tooth off on the distributors?? The carb was removed from the rubber connector and left on the aircraft while the engine was removed and on a stand and not touched during this time ( all linkage remained in tact. Bobby Zodiac 601 XL "B" Jabiru 3300 S/N 1141 Sensenich 64" x 51" Prop Bing Carb 260 Main & 290 Needle Jet Status - Flying 236 hrs. http://www.matronics.com/Navigator?JabiruEngine-List http://forums.matronics.com http://www.matronics.com/contribution href="http://www.matronics.com/Navigator?JabiruEngine-List" class="">http://www.matronics.com/Navigator?JabiruEngine-List class="">http://forums.matronics.com class="">http://www.matronics.com/contribution ------------------------------------------------------------------------------------- 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.