What is the Porsche factory replacement IMS ?
03-28-2014, 02:16 PM
#16
Rennlist Member
03-28-2014, 03:13 PM
#17
And this is when it is handy to have a good relationship with your local dealer, as they do have some latitude on things. I have an oil change and my yearly inspection done at the dealer and attend some of their events. This way I am a current customer in their system - and they know me.
Stuff like this can be important.
Stuff like this can be important.
03-28-2014, 03:28 PM
#18
Race Director
Haven't had time to read all the posts so apologies if this has been covered.
The leak appears to be from an RMS leak. However, with these engines there is an IMS end plate/flange and 3 bolts from which oil can leak.
It is SOP to when doing the RMS to replace/renew the IMS end plate/flange and its 3 bolts.
Replacing this flange/end plate does not have the bearing replaced!
Porsche does not offer an IMSB replacement, per se. In at least one case I have I seen a 996 engine in with a failed IMSB and the engine was "rebuilt" with a new IMS and its bearing. The required the engine cases to be separated. It is not a trivial job.
If there are no scary ferrous metal bits in the oil filter housing oil and in the oil filter element the odds are high the leak is just the RMS with a chance the IMS end plate/flange/bolts are leaking too.
I'd elect to have the RMS/IMS end plate/flange and bolts replaced.
I can tell you I just recently had an RMS leak addressed in my 03 Turbo and the leak sign was about what your video clip shows. Actually make that a bit less. The leak was bad enough the bottommost portion of the engine was wet with oil, there was enough oil flow to rinse away/remove the grime (and old cosmoline) but not bad enough to make a mess of the underside of the car after the leak. There was just a hint of spotting on the pavement.
The leak appears to be from an RMS leak. However, with these engines there is an IMS end plate/flange and 3 bolts from which oil can leak.
It is SOP to when doing the RMS to replace/renew the IMS end plate/flange and its 3 bolts.
Replacing this flange/end plate does not have the bearing replaced!
Porsche does not offer an IMSB replacement, per se. In at least one case I have I seen a 996 engine in with a failed IMSB and the engine was "rebuilt" with a new IMS and its bearing. The required the engine cases to be separated. It is not a trivial job.
If there are no scary ferrous metal bits in the oil filter housing oil and in the oil filter element the odds are high the leak is just the RMS with a chance the IMS end plate/flange/bolts are leaking too.
I'd elect to have the RMS/IMS end plate/flange and bolts replaced.
I can tell you I just recently had an RMS leak addressed in my 03 Turbo and the leak sign was about what your video clip shows. Actually make that a bit less. The leak was bad enough the bottommost portion of the engine was wet with oil, there was enough oil flow to rinse away/remove the grime (and old cosmoline) but not bad enough to make a mess of the underside of the car after the leak. There was just a hint of spotting on the pavement.
03-28-2014, 03:42 PM
#19
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Porsche SA "rebuilt" my engine since the failure occurred at low RPM. I now have the updated, non-replaceable IMS bearing. 20k miles later no problems.
03-28-2014, 05:01 PM
#20
Rennlist Member
If you're intending to treat the bearing as a maintenance item and replace at every clutch change just use the OEM. If you want to do it less often opt for the LNE.
Mine was leaking in the same place and when I removed the trans the RMS was dry but the IMS seal was leaking - the bearing was fine although I replaced it anyway with a LNE.
Mine was leaking in the same place and when I removed the trans the RMS was dry but the IMS seal was leaking - the bearing was fine although I replaced it anyway with a LNE.
03-28-2014, 05:23 PM
#21
Three Wheelin'
I did IMS when I bought the car 34K miles
I did clutch at $60k miles
I found out at 62k miles LN says their bearing has a 50k life
03-28-2014, 06:19 PM
#22
50k is on the high end if you don't do 5k OCI's using JG-DT40. If not, expect 30k. lol
Edit: here is the quote from their site:
Edit: here is the quote from their site:
Service interval recommendations are valid only with use of Joe Gibbs BR break in oil during the new IMS bearing break-in period of 200-400 miles along with use of an LN Engineering Spin-On Oil Filter Adapter with subsequent oil changes at 6 months or 5,000 miles using Joe Gibbs DT40.
Last edited by alpine003; 03-28-2014 at 06:54 PM.
03-28-2014, 07:39 PM
#24
Rennlist Member
There is no Porsche specified IMS service interval.
03-28-2014, 07:49 PM
#25
03-28-2014, 08:21 PM
#26
I looked at the LN website as I am getting another LN bearing put in my rebuild and it says the service life of their double row for the 99's is 75K miles (as long as you use the proper oil and have the engine certified prior, etc). But still trying to sort thru it all because as far as I can tell from the website they don't offer any kind of warranty, so not sure why they say you have to do all that. Now if the site said follow these procedures and use one of our installers and if you have an IMS failure we will pay for the repair, that would be different
03-29-2014, 02:02 AM
#27
If the dealer installs the IMSB (or any factory part, for that matter) it should come with a two year warranty on parts and labor. That should be plenty of time if you're thinking of selling in the near future.
