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hd21

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About hd21

  • Birthday 03/21/1986

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    Male

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  • From
    Farmington Hills
  • Porsche Club
    PCA (Porsche Club of America)
  • Present cars
    '04 P 996 C4S<br />'01 BMW E46 M3<br />'03 BMW E39 530i<br />'75 BMW E10 2002
  • Future cars
    '10 P Turbo
  • Former cars
    1995 Mitsubishi 3000GT<br />1997 Mitsubishi 3000GT<br />1995 Toyota Celica<br />1989 BMW E30 325i<br />1978 P 924<br />1989 P 944, 2009 Cayman

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  1. First, you need to know that we cannot see the files you attached. Second, while the dealers have been replacing both the RMS and IMS flange seals due to leaks for many years, it is still the official position of Porsche NA that you cannot change the IMS bearing on the early cars without taking the engine apart. As the direct result, many dealers simply change the flange cover and RMS seals and leave it at that. Repeated RMS failures is an potentially large problem. Porsche had a run of engine cases where the opening the RMS sits in is not concentric; they even developed a tool and procedure to test a leaking engine before installing a new RMS. The reason this is an issue is that if your engine is one of those (and there were quite a few) with non concentric RMS cavities, the only remedy is a replacement engine. That's umm.. quite scary, to say the least. Can Porsche NA help me with the VIN's of the defected casings? Any idea how I can find the root cause of the RMS leak? The IMS is a different story all together.. To my knowledge, there is no way of knowing which cars are affected until the leak occurs and the engine case is checked with the special tool. What happens with the case opening is not concentric is that the seal is offset to one side and the rear of the crankshaft basically beats the seal to death in a relatively short time frame. When this first started happening, Porsche switched the seal materials to PTFE from Viton, and changed the correct seal installation depth, which seemed to help in many situations, but not all of these replacements worked, resulting in continuing leaking problems. That is when they developed the "go/no go" tool that checks the RMS seal opening in the case for concentricity. If the opening is not round, there is nothing that can be done with the engine still assembled, so they began to replace these engines, many of which were still under warranty at the time. This was all written up in a very extensive article on the subject in Excellence magazine several years ago. Thank you, JFP. I spoke with the seller last night -- He mentioned that he never really notice any dripping (in 9 year of ownership - 43k miles), but the dealer said "there was sweat around that area" during a routine maintenance, so, they performed the replacement. Also, could you/anyone help with my other IMS-related questions please? Porsche of Motor city replaced the RMS and IMS seals in May 2013 (with 2 year warranty), as the owner noticed oil leak -- see attachment. The RMS and IMS was replaced again in May of 2015 under the above warranty -- see attachment. What I don't understand is, why didn't the dealership recommend an IMS bearing upgrade, since they were already in there. - Can the bearing be inspected during the replacement of IMS seal? Maybe they didn't deem the upgrade necessary? - Are dealers instructed to recommend the IMS upgrade when they're servicing anything else in that area? - Should I assume they have inspected the clutch and flywheel when they replaced the seals? - Have you guys experienced repeated leakage from the RMS? Again, Porsche Cars NA's official position is that the IMS bearing cannot be changed without disassembling the engine, so I seriously doubt they would recommend its replacement, much less upgrading it with aftermarket parts. When the flange is off, you can see the rear bearing seal and perhaps move the center bolt to see if it is very loose, but neither would tell you very much. They may have inspected the clutch, but if they did not note it in the paperwork, there is no way of knowing. Yes, I have seen repeated RMS leaks, usually as the result of the PTFE seal not being installed properly, but in my case they were not done by a dealer. Both the dealers and I use the factory RMS installation tool and recommended procedure's as this installation is very specific and has to be done correctly or they will leak: I have also personally seen two cars with non concentric RMS case openings; in both situations, because the car's were out of warranty, the owner's chose to have a new seal installed and then either sold or traded the car in. Thanks again! I'm wondering, if I had the defective casing, would I be able to see some oil in a matter of days or months? Seals were replaced in May, 2015 and after 6000 miles, there's no leakage.
  2. First, you need to know that we cannot see the files you attached. Second, while the dealers have been replacing both the RMS and IMS flange seals due to leaks for many years, it is still the official position of Porsche NA that you cannot change the IMS bearing on the early cars without taking the engine apart. As the direct result, many dealers simply change the flange cover and RMS seals and leave it at that. Repeated RMS failures is an potentially large problem. Porsche had a run of engine cases where the opening the RMS sits in is not concentric; they even developed a tool and procedure to test a leaking engine before installing a new RMS. The reason this is an issue is that if your engine is one of those (and there were quite a few) with non concentric RMS cavities, the only remedy is a replacement engine. That's umm.. quite scary, to say the least. Can Porsche NA help me with the VIN's of the defected casings? Any idea how I can find the root cause of the RMS leak? The IMS is a different story all together.. To my knowledge, there is no way of knowing which cars are affected until the leak occurs and the engine case is checked with the special tool. What happens with the case opening is not concentric is that the seal is offset to one side and the rear of the crankshaft basically beats the seal to death in a relatively short time frame. When this first started happening, Porsche switched the seal materials to PTFE from Viton, and changed the correct seal installation depth, which seemed to help in many situations, but not all of these replacements worked, resulting in continuing leaking problems. That is when they developed the "go/no go" tool that checks the RMS seal opening in the case for concentricity. If the opening is not round, there is nothing that can be done with the engine still assembled, so they began to replace these engines, many of which were still under warranty at the time. This was all written up in a very extensive article on the subject in Excellence magazine several years ago. Thank you, JFP. I spoke with the seller last night -- He mentioned that he never really notice any dripping (in 9 year of ownership - 43k miles), but the dealer said "there was sweat around that area" during a routine maintenance, so, they performed the replacement. Also, could you/anyone help with my other IMS-related questions please? Porsche of Motor city replaced the RMS and IMS seals in May 2013 (with 2 year warranty), as the owner noticed oil leak -- see attachment. The RMS and IMS was replaced again in May of 2015 under the above warranty -- see attachment. What I don't understand is, why didn't the dealership recommend an IMS bearing upgrade, since they were already in there. - Can the bearing be inspected during the replacement of IMS seal? Maybe they didn't deem the upgrade necessary? - Are dealers instructed to recommend the IMS upgrade when they're servicing anything else in that area? - Should I assume they have inspected the clutch and flywheel when they replaced the seals? - Have you guys experienced repeated leakage from the RMS?
  3. First, you need to know that we cannot see the files you attached. Second, while the dealers have been replacing both the RMS and IMS flange seals due to leaks for many years, it is still the official position of Porsche NA that you cannot change the IMS bearing on the early cars without taking the engine apart. As the direct result, many dealers simply change the flange cover and RMS seals and leave it at that. Repeated RMS failures is an potentially large problem. Porsche had a run of engine cases where the opening the RMS sits in is not concentric; they even developed a tool and procedure to test a leaking engine before installing a new RMS. The reason this is an issue is that if your engine is one of those (and there were quite a few) with non concentric RMS cavities, the only remedy is a replacement engine. That's umm.. quite scary, to say the least. Can Porsche NA help me with the VIN's of the defected casings? Any idea how I can find the root cause of the RMS leak? The IMS is a different story all together..
  4. P.S.: The car has 493xxx miles and currently has no leaks or funny noises. Attaching images of receipts again- [/url]">http://www.renntech.org/forums/uploads/downloadedimages/photo%202%208jpg.html][/url] IMS & [/url]">http://www.renntech.org/forums/uploads/downloadedimages/photo%203%202jpg.html][/url] IMS & RMS Seal Replacement Receipt (Under warranty - May, 2015) [/url]">http://www.renntech.org/forums/uploads/downloadedimages/photo%201%208jpg.html][/url]
  5. Hey guys! I'm new to this forum. I recently sold my '09 Cayman and bought a '04 C4S, and I absolutely love the car. I read up on the IMS/RMS issues on a couple of forums, including this one. The previous owner of this car was a PCA member, used to track the car occasionally and was aware of the IMS issue. The car was always maintained at a Porsche dealer (Howard Cooper, Ann Arbor, MI & Porsche of Motor City). Also, the owner always said yes to everything recommended by the dealership. There are records supporting most of the maintenance. Porsche of Motor city replaced the RMS and IMS seals in May 2013 (with 2 year warranty), as the owner noticed oil leak -- see attachment. The RMS and IMS was replaced again in May of 2015 under the above warranty -- see attachment. What I don't understand is, why didn't the dealership recommend an IMS bearing upgrade, since they were already in there. - Can the bearing be inspected during the replacement of IMS seal? Maybe they didn't deem the upgrade necessary? - Are dealers instructed to recommend the IMS upgrade when they're servicing anything else in that area? - Should I assume they have inspected the clutch and flywheel when they replaced the seals? - Have you guys experienced repeated leakage from the RMS? Any help would be appreciated. IMS & RMS Seal Replacement Receipt (May, 2013) - Page 1 http://www.renntech.org/forums/uploads/downloadedimages/photo%202%208.jpg IMS & RMS Seal Replacement Receipt (May, 2013) - Page 2 http://www.renntech.org/forums/uploads/downloadedimages/photo%203%202.jpg IMS & RMS Seal Replacement Receipt (Under warranty - May, 2015) http://www.renntech.org/forums/uploads/downloadedimages/photo%201%208.jpg
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