---------------------------------------------------------- JabiruEngine-List Digest Archive --- Total Messages Posted Sat 08/23/14: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:15 AM - Re: Tightening head bolts on Jab 2200, which method is best? (Frankd) 2. 03:58 PM - Re: Re: Tightening head bolts on Jab 2200, which method is best? (Tim Yoder) ________________________________ Message 1 _____________________________________ Time: 09:15:47 AM PST US Subject: JabiruEngine-List: Re: Tightening head bolts on Jab 2200, which method is best? From: "Frankd" Hi Tim, I can understand your logic to just check at 20Ft/Lbs, but why does the manual ask for 24ft/Lbs?? In any case, I will not back off the bolts and see what I get with 20ft/lbs. Nothing should move. Right? Then I can go to 24ft/lbs and check per the manual spec. If it does move at 20Ft/Lbs does that indicate the heads were overheated at some point. I'm the 2nd owner of this engine and on my first flight it got up to 400 DegC CHT, now I run about 300-310 DegC which I'm happy with. Thanks for the advice FrankD Read this topic online here: http://forums.matronics.com/viewtopic.php?p=429174#429174 ________________________________ Message 2 _____________________________________ Time: 03:58:42 PM PST US From: "Tim Yoder" Subject: RE: JabiruEngine-List: Re: Tightening head bolts on Jab 2200, which method is best? Hi Frank, Have you gone to the Jabiru USA web site? I think this topic is covered by Pete in his Tec. Tips, if not there it is on Jabiru's site. Do you have a Overhaul Manual? 24# is the orig. torque, if you remove the head then you would torque to 24#. If the heads have over heated you will get movement, maybe only one or two bolts closest to the exhaust valves. You do not re-torque to 24#, you will just keep pushing the head into the steel barrel. I hope you meant to say 400F not C, 400C is 752F YIKES! I think the book says 304F max for cruise, so you should be okay. I think the book says you can go a little higher on climb out. If the bolts move at 20# the heads are getting to hot. Stop at 20# and see if you can adjust the baffles in the tunnels. This procedure is also on the Jabiru web sites. I have a 3300 SN 346 in my Thorp T-211 and #6 is the hottest cyl. What are you flying? Tim -----Original Message----- From: owner-jabiruengine-list-server@matronics.com [mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of Frankd Sent: Saturday, August 23, 2014 9:15 AM Subject: JabiruEngine-List: Re: Tightening head bolts on Jab 2200, which method is best? Hi Tim, I can understand your logic to just check at 20Ft/Lbs, but why does the manual ask for 24ft/Lbs?? In any case, I will not back off the bolts and see what I get with 20ft/lbs. Nothing should move. Right? Then I can go to 24ft/lbs and check per the manual spec. If it does move at 20Ft/Lbs does that indicate the heads were overheated at some point. I'm the 2nd owner of this engine and on my first flight it got up to 400 DegC CHT, now I run about 300-310 DegC which I'm happy with. Thanks for the advice FrankD Read this topic online here: http://forums.matronics.com/viewtopic.php?p=429174#429174 --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com ------------------------------------------------------------------------------------- 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.