IMS bearing 997.1
#1
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I just joined Rennlist specifically to get your guys advice. I have a 2006 997.1S with 67,000+ miles. I drive it often and store in the winter. I'm very concerned with this topic.
Mechanics have told me:
1. You don't have an IMS issue because they did the alignment and it was good.
2. I should replace it when I replace the clutch.
3. Mine is unserviceable so it can't be fixed.
HELP
This is my 9th Porsche and I really would like to keep it.
I checked FAQ and didn't see this specific topic. I know I probably missed it.
Greatly appreciate constructive advice. I would really like to keep this car.
Thanks.
Mechanics have told me:
1. You don't have an IMS issue because they did the alignment and it was good.
2. I should replace it when I replace the clutch.
3. Mine is unserviceable so it can't be fixed.
HELP
This is my 9th Porsche and I really would like to keep it.
I checked FAQ and didn't see this specific topic. I know I probably missed it.
Greatly appreciate constructive advice. I would really like to keep this car.
Thanks.
The following users liked this post:
MarkTro (06-23-2021)
#2
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2006 models are for the most part protected from this problem. Especially with this kind of mileage.
Keep changing the oil every 5,000 miles, respect oil temperature before revving and you will be fine.
Yves
Keep changing the oil every 5,000 miles, respect oil temperature before revving and you will be fine.
Yves
The following users liked this post:
MarkTro (06-23-2021)
#4
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1. is wrong
2. is wrong
3. is correct but it does not need to be fixed because it already has the improved bearing with 1% or less failure rate.
2. is wrong
3. is correct but it does not need to be fixed because it already has the improved bearing with 1% or less failure rate.
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Kenporsche997 (06-23-2021)
#5
Burning Brakes
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When the clutch is replaced have a competent mechanic pull the outer seal off the IMS bearing.
See below for more information. Hope that clarifies the issue for you.https://lnengineering.com/products/the-definitive-guide-and-faq-for-porsche-ims-bearings.html
Although the forums might tell you that 987 and 997 models do not have IMS bearing problems, some 2005 model year vehicles were fitted with the problematic single row bearing. The larger, non-serviceable bearing used in the 2006 through 2008 model year Porsche Boxster, Cayman, and 911 models is the strongest of the factory Porsche intermediate shaft bearings, but they still can fail. As the bearing cannot be changed without complete engine disassembly, many experts agree that removing the grease seal off the IMS bearing will extend the service life of original bearing and is a must anytime you have the gearbox out to do a clutch job or replace the rear main seal.
See below for more information. Hope that clarifies the issue for you.
https://lnengineering.com/products/the-definitive-guide-and-faq-for-porsche-ims-bearings.html
DO PORSCHE 997 MODELS HAVE IMS PROBLEMS?
Although the forums might tell you that 987 and 997 models do not have IMS bearing problems, some 2005 model year vehicles were fitted with the problematic single row bearing. The larger, non-serviceable bearing used in the 2006 through 2008 model year Porsche Boxster, Cayman, and 911 models is the strongest of the factory Porsche intermediate shaft bearings, but they still can fail. As the bearing cannot be changed without complete engine disassembly, many experts agree that removing the grease seal off the IMS bearing will extend the service life of original bearing and is a must anytime you have the gearbox out to do a clutch job or replace the rear main seal.
The following users liked this post:
MarkTro (06-23-2021)
#6
Rennlist Member
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"When the clutch is replaced have a competent mechanic pull the outer seal off the IMS bearing."
I still dont get this idea. If the bearing is sealed on both sides, what good is removing the outer seal? Oil cannot pass through the inner seal so I dont see how oil can make its way around the other side of the bearing. Am I missing something?
I still dont get this idea. If the bearing is sealed on both sides, what good is removing the outer seal? Oil cannot pass through the inner seal so I dont see how oil can make its way around the other side of the bearing. Am I missing something?
#7
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"When the clutch is replaced have a competent mechanic pull the outer seal off the IMS bearing."
I still dont get this idea. If the bearing is sealed on both sides, what good is removing the outer seal? Oil cannot pass through the inner seal so I dont see how oil can make its way around the other side of the bearing. Am I missing something?
I still dont get this idea. If the bearing is sealed on both sides, what good is removing the outer seal? Oil cannot pass through the inner seal so I dont see how oil can make its way around the other side of the bearing. Am I missing something?
I did this very thing while my motor and trans was out.
Last edited by TopKatz; 06-23-2021 at 07:30 AM.
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Kenporsche997 (06-23-2021)
Trending Topics
#8
Rennlist Member
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"When the clutch is replaced have a competent mechanic pull the outer seal off the IMS bearing."
I still dont get this idea. If the bearing is sealed on both sides, what good is removing the outer seal? Oil cannot pass through the inner seal so I dont see how oil can make its way around the other side of the bearing. Am I missing something?
I still dont get this idea. If the bearing is sealed on both sides, what good is removing the outer seal? Oil cannot pass through the inner seal so I dont see how oil can make its way around the other side of the bearing. Am I missing something?
#10
RL Community Team
Rennlist Member
Rennlist Member
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The bearing seal doesn't make a perfect deal as the bearing ages. That allows a little oil in past it which is enough to thin and dissolve the internal bearing grease and let it flow out. Now you have a little oil inside a sealed bearing, but it doesn't cycle enough to where the oil doesn't beak down and stop lubricating. Pulling the seal allows enough flow to keep the oil in the bearing fresh.
2006 is non-replaceable. Just pull the seal whenever you pull the transmission and replace the RMS.
2006 is non-replaceable. Just pull the seal whenever you pull the transmission and replace the RMS.
#11
Rennlist Member
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I think some folks tend to confuse the bearing seal that is added to the bearing during manufacture with the o-ringish seal between the IMSB cover and the case. They are different. Remove cover, extract the seal from the bearing, replace cover seal/ring, and reinstall cover.
#14
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I just joined Rennlist specifically to get your guys advice. I have a 2006 997.1S with 67,000+ miles. I drive it often and store in the winter. I'm very concerned with this topic.
Mechanics have told me:
1. You don't have an IMS issue because they did the alignment and it was good.
2. I should replace it when I replace the clutch.
3. Mine is unserviceable so it can't be fixed.
HELP
This is my 9th Porsche and I really would like to keep it.
I checked FAQ and didn't see this specific topic. I know I probably missed it.
Greatly appreciate constructive advice. I would really like to keep this car.
Thanks.
Mechanics have told me:
1. You don't have an IMS issue because they did the alignment and it was good.
2. I should replace it when I replace the clutch.
3. Mine is unserviceable so it can't be fixed.
HELP
This is my 9th Porsche and I really would like to keep it.
I checked FAQ and didn't see this specific topic. I know I probably missed it.
Greatly appreciate constructive advice. I would really like to keep this car.
Thanks.
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#15
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Not all 06 models have the larger bearing. You should be able to check the engine number under the car without taking anything off. I don't have the details but less than XX is servicable and over XX is not. That will tell you if you have to worry.