---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Mon 03/16/15: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:45 AM - Re: RV-List Digest: 0 Msgs - 03/15/15 (d wntzl) 2. 05:06 PM - Re: Re: RV-List Digest: 0 Msgs - 03/15/15 (Carl Froehlich) 3. 05:14 PM - Re: Re: RV-List Digest: 0 Msgs - 03/15/15 (vanremog@aol.com) 4. 05:54 PM - Re: Cylinder stud repair (Kelly McMullen) ________________________________ Message 1 _____________________________________ Time: 09:45:58 AM PST US From: d wntzl Subject: RV-List: Re: RV-List Digest: 0 Msgs - 03/15/15 Lycoming Cylinder problem Hello fellow RV'rs, =C2-Looking for advice, here's my situation \ problem . (I have an RV6, w an 0-320 A2B which was installed rebuilt, modified to 1 60 HP, during construction about 700 hrs ago). It has been running great, b ut I have been seeing =C2-a couple of small oil leaks, (which have gotten to be quite annoying.) While doing an oil change recently, I discovered on e of the top cylinder bolts (small one - not the larger thru bolts) had she ared off. I had not done anything to it whatsoever, nor was there any evide nce of looseness or an oil leak in that area, the broken part was just sitt ing there, I then jiggled the other upper bolts by hand and =C2-. . . 2 o f them were just finger tight!. =C2-Someone (a local A&P) suggested that a good welder could weld a nut to the broken stud and remove it that way - but that sounds way to "scary" to me.=C2-=C2- =C2- Any advice appreci ated. Also . . . is the plane grounded until the repair??=C2- =C2-Thank s in advance=C2- =C2-David Wentzell - =C2-N233DW On Monday, March 16, 2015 3:24 AM, RV-List Digest Server wrote: * ======================== =C2- Online Versions of Today's List Digest Archive ======================== Today's complete RV-List Digest can also be found in either of the two Web Links listed below.=C2- The .html file includes the Digest format ted in HTML for viewing with a web browser and features Hyperlinked Indexes and Message Navigation.=C2- The .txt file includes the plain ASCII versio n of the RV-List Digest and can be viewed with a generic text editor such as Notepad or with a web browser. HTML Version: =C2- =C2- http://www.matronics.com/digest/digestview.php?Style=82701& View=html&Chapter 15-03-15&Archive=RV Text Version: =C2- =C2- http://www.matronics.com/digest/digestview.php?Style=82701& View=txt&Chapter 15-03-15&Archive=RV ======================== ======================= =C2- EMail Version of Today's List Digest Archive ======================== ======================= =C2- =C2- =C2- =C2- =C2- ---------------------------------------- ------------------ =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2 - =C2- =C2- RV-List Digest Archive =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2 - =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- --- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- =C2- Total Messages Posted Sun 03/15/15: 0 =C2- =C2- =C2- =C2- =C2- ---------------------------------------- ------------------ Today's Message Index: ---------------------- S - - =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. ________________________________ Message 2 _____________________________________ Time: 05:06:15 PM PST US From: "Carl Froehlich" Subject: RE: RV-List: Re: RV-List Digest: 0 Msgs - 03/15/15 I'll defer to the guru mechanics out there, but if it was my plane the engine would get pulled, disassembled and repaired as needed. I would assume other bolts that had taken up the load of those bolts that you found loose had deformed - and perhaps this is what caused your sheared bolt. Note - Mike Busch has voiced his opinion (which I agree with) that engine cylinders cannot be properly removed/replace without removing the engine from the aircraft as this impedes achieving correct cylinder bolt torque. Carl From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matronics.com] On Behalf Of d wntzl Sent: Monday, March 16, 2015 12:45 PM Subject: RV-List: Re: RV-List Digest: 0 Msgs - 03/15/15 Lycoming Cylinder problem Hello fellow RV'rs, Looking for advice, here's my situation \ problem. (I have an RV6, w an 0-320 A2B which was installed rebuilt, modified to 160 HP, during construction about 700 hrs ago). It has been running great, but I have been seeing a couple of small oil leaks, (which have gotten to be quite annoying.) While doing an oil change recently, I discovered one of the top cylinder bolts (small one - not the larger thru bolts) had sheared off. I had not done anything to it whatsoever, nor was there any evidence of looseness or an oil leak in that area, the broken part was just sitting there, I then jiggled the other upper bolts by hand and . . . 2 of them were just finger tight!. Someone (a local A&P) suggested that a good welder could weld a nut to the broken stud and remove it that way - but that sounds way to "scary" to me. Any advice appreciated. Also . . . is the plane grounded until the repair?? Thanks in advance David Wentzell - N233DW On Monday, March 16, 2015 3:24 AM, RV-List Digest Server wrote: * ======================== Online Versions of Today's List Digest Archive ======================== Today's complete RV-List Digest can also be found in either of the two Web Links listed below. The .html file includes the Digest formatted in HTML for viewing with a web browser and features Hyperlinked Indexes and Message Navigation. The .txt file includes the plain ASCII version of the RV-List Digest and can be viewed with a generic text editor such as Notepad or with a web browser. HTML Version: http://www.matronics.com/digest/digestview.php?Style=82701 &View=html&Chapter 15-03-15&Archive=RV Text Version: http://www.matronics.com/digest/digestview.php?Style=82701 &View=txt&Chapter 15-03-15&Archive=RV ====================== EMail Version of Today's List Digest Archive ====================== ---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Sun 03/15/15: 0 ---------------------------------------------------------- Today's Message Index: ---------------------- http -Matt Dralle, List Admin.====== ________________________________ Message 3 _____________________________________ Time: 05:14:54 PM PST US From: vanremog@aol.com Subject: Re: RV-List: Re: RV-List Digest: 0 Msgs - 03/15/15 Really? Mike is usually spot on but I find this to be an unfounded asserti on. On what evidence does he base this opinion? If this is true, thousands of aircraft over the last 50 years have been fly ing in an unairworthy condition. -GV Note =93 Mike Busch has voiced his opinion (which I agree with) that engine cylinders cannot be properly removed/replace without removing the en gine from the aircraft as this impedes achieving correct cylinder bolt torq ue. -----Original Message----- From: Carl Froehlich Sent: Mon, Mar 16, 2015 5:06 pm Subject: RE: RV-List: Re: RV-List Digest: 0 Msgs - 03/15/15 I=99ll defer to the guru mechanics out there, but if it was my plane the engine would get pulled, disassembled and repaired as needed. I would assume other bolts that had taken up the load of those bolts that you found loose had deformed =93 and perhaps this is what caused your sheared bolt. Note =93 Mike Busch has voiced his opinion (which I agree with) that engine cylinders cannot be properly removed/replace without removing the en gine from the aircraft as this impedes achieving correct cylinder bolt torq ue. Carl From: owner-rv-list-server@matronics.com [mailto:owner-rv-list-server@matro nics.com] On Behalf Of d wntzl Sent: Monday, March 16, 2015 12:45 PM Subject: RV-List: Re: RV-List Digest: 0 Msgs - 03/15/15 Lycoming Cylinder problem Hello fellow RV'rs, Looking for advice, here's my situation \ problem. (I have an RV6, w an 0-320 A2B which was installed rebuilt, modified to 160 HP , during construction about 700 hrs ago). It has been running great, but I have been seeing a couple of small oil leaks, (which have gotten to be qui te annoying.) While doing an oil change recently, I discovered one of the t op cylinder bolts (small one - not the larger thru bolts) had sheared off. I had not done anything to it whatsoever, nor was there any evidence of loo seness or an oil leak in that area, the broken part was just sitting there, I then jiggled the other upper bolts by hand and . . . 2 of them were jus t finger tight!. Someone (a local A&P) suggested that a good welder could weld a nut to the broken stud and remove it that way - but that sounds way to "scary" to me. Any advice appreciated. Also . . . is the plane grounded until the repa ir?? Thanks in advance David Wentzell - N233DW On Monday, March 16, 2015 3:24 AM, RV-List Digest Server wrote: * ======================== Online Versions of Today's List Digest Archive ======================== Today's complete RV-List Digest can also be found in either of the two Web Links listed below. The .html file includes the Digest formatted in HTML for viewing with a web browser and features Hyperlinked Indexes and Message Navigation. The .txt file includes the plain ASCII version of the RV-List Digest and can be viewed with a generic text editor such as Notepad or with a web browser. HTML Version: http://www.matronics.com/digest/digestview.php?Style=82701&View=htm l&Chapter 15-03-15&Archive=RV Text Version: http://www.matronics.com/digest/digestview.php?Style=82701&View=txt &Chapter 15-03-15&Archive=RV ====================== EMail Version of Today's List Digest Archive ====================== ---------------------------------------------------------- RV-List Digest Archive --- Total Messages Posted Sun 03/15/15: 0 ---------------------------------------------------------- Today's Message Index: ---------------------- http -Matt Dralle, List Admin.====== http://www.matronics.com/Navigator?RV-List http://forums.matronics.com http://www.matronics.com/contribution ________________________________ Message 4 _____________________________________ Time: 05:54:28 PM PST US From: Kelly McMullen Subject: Re: RV-List: Cylinder stud repair There are several ways to remove a broken stud. I would consult with a respected engine shop, like Barrett Performance, Lycon, Mattictuck, or case overhauler such as Divco as to how they recommend removing the broken stud, and consider also removing the other studs for that cylinder, depending on very close examination with ten power magnifying lens and/or some form of non-destructive testing to ensure nothing is wrong with those studs. As to reassemble on the airframe, Mike may be right about big Continentals in Beech or Cessna airframes, particularly the cradle type mount, but he is full of horse feathers on a Lycoming on a Dynafocal mount.You just need the right cylinder wrenches and a good torque wrench with long enough handle for the torque needed. The most important item is to not move the crankshaft/prop when there is no torque on the through bolts. Position the prop before removing torque to where it is needed to remove that cylinder. If more needs to come apart, use torque plate or stack of washers and nuts to retorque the case before moving to another cylinder. Keeps the bearings secured in position. On 3/16/2015 5:05 PM, Carl Froehlich wrote: > > Ill defer to the guru mechanics out there, but if it was my plane the > engine would get pulled, disassembled and repaired as needed. I would > assume other bolts that had taken up the load of those bolts that you > found loose had deformed and perhaps this is what caused your > sheared bolt. > > Note Mike Busch has voiced his opinion (which I agree with) that > engine cylinders cannot be properly removed/replace without removing > the engine from the aircraft as this impedes achieving correct > cylinder bolt torque. > > Carl > > *From:*owner-rv-list-server@matronics.com > [mailto:owner-rv-list-server@matronics.com] *On Behalf Of *d wntzl > *Sent:* Monday, March 16, 2015 12:45 PM > *To:* rv-list@matronics.com > *Subject:* RV-List: Re: RV-List Digest: 0 Msgs - 03/15/15 > > Lycoming Cylinder problem > > Hello fellow RV'rs, Looking for advice, here's my situation \ > problem. (I have an RV6, w an 0-320 A2B which was installed rebuilt, > modified to 160 HP, during construction about 700 hrs ago). It has > been running great, but I have been seeing a couple of small oil > leaks, (which have gotten to be quite annoying.) While doing an oil > change recently, I discovered one of the top cylinder bolts (small one > - not the larger thru bolts) had sheared off. I had not done anything > to it whatsoever, nor was there any evidence of looseness or an oil > leak in that area, the broken part was just sitting there, I then > jiggled the other upper bolts by hand and . . . 2 of them were just > finger tight!. Someone (a local A&P) suggested that a good welder > could weld a nut to the broken stud and remove it that way - but that > sounds way to "scary" to me. > > Any advice appreciated. Also . . . is the plane grounded until the > repair?? > > Thanks in advance > > David Wentzell - N233DW > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV-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/rv-list Browse Digests http://www.matronics.com/digest/rv-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.