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YOUR RESEARCHStock IMS bearing. Is there oil pressure against it?
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Replace oil
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Suggestion
Just change the oil on a regular basis (no more than 7.5K miles) and the engine will last forever.
Stock IMS bearing. Is there oil pressure against it?
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Leading evidence: 'Replace oil' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Inspect oil filter medium' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Performed · outcome unconfirmed
By the way, the larger bearing cannot be removed/replaced without opening the crankcase.
Stock IMS bearing. Is there oil pressure against it?
Use jgr dt-40
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Stock IMS bearing. Is there oil pressure against it?
Inspect oil filter medium
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Suggestion
I'll also continue to inspect the oil filter medium for metallic particles at each oil change (every 5-7000 miles).
Stock IMS bearing. Is there oil pressure against it?
Recommend here in california
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Suggestion
5W 40 is what mechanics have recommended here in California.
Stock IMS bearing. Is there oil pressure against it?
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Are there some IMS bearings that are both sealed and have oil pressure against them? I am asking this question here because I am aware that a great knowledge base exists in the 996 community (of which I used to be a part). I want to place a sealed bearing in an oil pressurized environment where it will see an exterior pressure of up to 100psi. My question is whether or not the seals can tolerate that amount of pressure.
As I understand it, the stock IMS bearing is sealed. Furthermore, there are some modifications in which you substitute it with a pressurized bearing. Are there systems, be they stock or aftermarket, where a sealed bearing is used but it also sees external oil pressure? I hope my question is worded well enough to be understood.
I own a 2007 Carrera S with 18K miles. Bought the car two years ago with 10K miles on it with a two year CPO warranty which expires this April. I am considering keeping it however have been concerned about the IMS issue with these M97 motors. I've learned these years have the larger bearing and not many have failed. Regardless, wondering how many out there with the M97 motor have done the IMS fix and if so, which one you did it with.
Thanks in advance,
Kalamazoo
Sealed IMS bearings aren't designed to withstand 100 psi external oil pressure, as their seals are meant to retain internal grease, not resist high external pressure. No stock or aftermarket sealed IMS bearing is built for such conditions.
Your car has the larger bearing and I would not worry about it. By the way, the larger bearing cannot be removed/replaced without opening the crankcase.
I'm using JGR DT-40. In the summer, I'll spike it with a little DT-50 to keep the oil pressure up during hotter weather. I'll also continue to inspect the oil filter medium for metallic particles at each oil change (every 5-7000 miles). I also use a spin-on oil filter adapter to minimize the oil that bypasses filtering during cold start-up.
I'm not sure if I have the large or small (more easily replaced) bearing but based on the engine code, I think it's the large. If I have to pull the trannie (for example, to replace the clutch), I'll have the IMS sized, and go from there.
5W 40 is what mechanics have recommended here in California. Mobil1 or Motul Xcess are the usuals for this grade. There are other good brands, but not on Porsche's approved list.
Quote:
I have, but mine's a 2005 and had the smaller bearing. Went with the LNE single row pro. The oem bearing was in perfect shape, but my clutch died. M1 0w40 for the entire 10 years/45k miles leading up to the bearing change.
Large bearing here in my 08.
Motul X-cess user here year round (5W-40).Engine runs oh so much smoother than Mobil 1 with less consumption. LN engineering Spin on filter adaptor user as well.
