Re: [MBZ] Cool 96 E300 Diesel is hot
Me thinks that aluminium and steel expands at different rates, not sure which does what. Hendrik who also expands On 26/03/14 01:31, arche...@embarqmail.com wrote: On 3/23/2014 8:02 AM, Mitchell Haley, EA wrote: The way I am reading this you used some sort of penetrator fluid? Would this not cool off the plugs, thus defeating the purpose of the exercise in warming the plugs up to operating temp? I believe the idea was to have the aluminum head hot so that it expanded around the steel plug. I'm not sure how that works, however. Doesn't a hole in an aluminum casting get smaller when you heat the casting? Mitch. . You can drive around the block a few times to heat up a beetle engine. Put a deep socket over a stuck spark plug. Quickly fill the deep socket with oil with a mustard or ketchup squeeze bottle. Very slowly turn the the plug / socket with a wrench. And it will will come out without stripping the threads. Never had to install a helicoil using that method. Very carefully applied powdered graphite to the threads of the new plug (Don't get any near the electrodes.).and never had a stuck plug again. Never had a stuck glow plug, so haven't tried the method there. Either the plug shrinks or the aluminum head expands; not sure which; but it works. Gerry ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com All posts are the result of individual contributors and as such, those individuals are responsible for the content of the post. The list owner has no control over the content of the messages of each contributor.
Re: [MBZ] Cool 96 E300 Diesel is hot
On 3/23/2014 8:02 AM, Mitchell Haley, EA wrote: The way I am reading this you used some sort of penetrator fluid? Would this not cool off the plugs, thus defeating the purpose of the exercise in warming the plugs up to operating temp? I believe the idea was to have the aluminum head hot so that it expanded around the steel plug. I'm not sure how that works, however. Doesn't a hole in an aluminum casting get smaller when you heat the casting? Mitch. . You can drive around the block a few times to heat up a beetle engine. Put a deep socket over a stuck spark plug. Quickly fill the deep socket with oil with a mustard or ketchup squeeze bottle. Very slowly turn the the plug / socket with a wrench. And it will will come out without stripping the threads. Never had to install a helicoil using that method. Very carefully applied powdered graphite to the threads of the new plug (Don't get any near the electrodes.).and never had a stuck plug again. Never had a stuck glow plug, so haven't tried the method there. Either the plug shrinks or the aluminum head expands; not sure which; but it works. Gerry ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com All posts are the result of individual contributors and as such, those individuals are responsible for the content of the post. The list owner has no control over the content of the messages of each contributor.
Re: [MBZ] Cool 96 E300 Diesel is hot
<< Doesn't a hole in an aluminum casting get smaller when you heat the casting?>> No. As to how it works, the coefficient of expansion of Al is greater than that of steel (12.3 vs. 7.3). When the head expands, all dimensions of the head expand at the same rate, so the holes enlarge as well. Greg -Original Message- From: Mercedes [mailto:mercedes-boun...@okiebenz.com] On Behalf Of Mitchell Haley, EA Sent: Sunday, March 23, 2014 5:02 AM To: Mercedes Discussion List Subject: Re: [MBZ] Cool 96 E300 Diesel is hot > The way I am reading this you used some sort of penetrator fluid? > Would this not cool off the plugs, thus defeating the purpose of the > exercise in warming the plugs up to operating temp? I believe the idea was to have the aluminum head hot so that it expanded around the steel plug. I'm not sure how that works, however. Doesn't a hole in an aluminum casting get smaller when you heat the casting? Mitch. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com All posts are the result of individual contributors and as such, those individuals are responsible for the content of the post. The list owner has no control over the content of the messages of each contributor.
Re: [MBZ] Cool 96 E300 Diesel is hot
> The way I am reading this you used some sort of penetrator fluid? > Would this not cool off the plugs, thus defeating the purpose of the > exercise in warming the plugs up to operating temp? I believe the idea was to have the aluminum head hot so that it expanded around the steel plug. I'm not sure how that works, however. Doesn't a hole in an aluminum casting get smaller when you heat the casting? Mitch. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Cool 96 E300 Diesel is hot
The way I am reading this you used some sort of penetrator fluid? Would this not cool off the plugs, thus defeating the purpose of the exercise in warming the plugs up to operating temp? Hendrik who runs hot and cold On 23/03/14 16:06, John Reames wrote: I'm working on it. -- John W Reames jream...@verizon.net Home: +14106646986 Mobile: +14437915905 On Mar 22, 2014, at 20:34, Max Dillon wrote: Wow, sorry to hear that. How did you get out the broken plugs? -- Max Dillon Charleston, SC Original Message From: John Reames Sent: March 22, 2014 7:32:37 PM EDT To: Mercedes Discussion List Subject: Re: [MBZ] 96 E300 Diesel Uh-huh. I have three that say otherwise. As in I had all the tools laid out ahead, ran it for 30 miles and had the manifold off the engine in approximately 10 minutes after shutoff. I used a torque wrench and was worrying them with lots of penetrant. Three of them broke off at less than 40Nm. One came out like butter (so easy I thought it snapped!), one was okay-ish, and number 6 outright fought me, but I got it out without an issue. It had been on a 100mi each way trip in the week beforehand and given several Italian tuneups; it was no longer emitting clouds when given one. Hot may help, but it is NOT the answer. -- John W Reames ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
