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Purpose of IMS flange behind Porsche's design?

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YOUR RESEARCHPurpose of IMS flange behind Porsche's design?

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Replace bearing

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Suggestion · Original poster

Obviously having a built in flange in the case would not benefit us since we would need to do an entire re-build to change the bearing but it would reduce the flange oil leak problem.

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Purpose of IMS flange behind Porsche's design?
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Leading evidence: 'Replace bearing' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace bearing' (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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Replace bearing

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Suggestion · Original poster

Obviously having a built in flange in the case would not benefit us since we would need to do an entire re-build to change the bearing but it would reduce the flange oil leak problem.

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Purpose of IMS flange behind Porsche's design?
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7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

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POST 1 / ORIGINAL POSTEROriginal post

I know that the purpose of it is to hold the stud that supports the IMS bearing but I have always wondered why did Porsche did this? Porsche doesn't sell the bearing by itself, they only sell the entire IMS shaft with the bearing already in place... Then why didn't they just enclose the entire assembly inside the case with an internal stud support... What was Porsche's theory on doing the flange, maybe it was for doing inspections of the bearing? Or did they predicted that the bearing would need to be changed as a service ($$$) but later backed out for some reason? Obviously having a built in flange in the case would not benefit us since we would need to do an entire re-build to change the bearing but it would reduce the flange oil leak problem. I am not starting another IMS bearing topic, this is just a discussion topic on just the flange

POST 2Original post

[Image-only post; no author-written text. Original image references:] https://cimg9.ibsrv.net/gimg/rennlist.com-vbulletin/750x600/jiffm_e0cd3678a48f46875a2d29bf7778d4757e8cdfa3.jpg

POST 3Original post

You are a wise person.. If the original IMSB was never intended to be serviced, (hence no part #, and no maintenance interval, as well as no IMS extraction tools, or procedure from the factory) then there's zero reason to create the perfectly sized access port to allow for a retrofit to occur. Especially when adding that access port costs money...

POST 4Original post

I bet in the long run, it would have been cheaper to machine those oil galleries into the M96 blocks...hindsight, 20/20, etc.

POST 6Original post

Quotes source post: 13047560

All seriousness aside, You are joking, right ?

POST 7Original post

Quotes source post: 13047533

I see this as the situation that probably played out: Engineer: This engine has a weakness we've identified Accountant: A fix is not in the budget Engineer: (walks away and thinks to himself) "Well if they won't let me fix it now then at least I can sneak an access port into the design so we can address it later" Of course later doesn't happen until the aftermarket picks up the slack.

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