Joined: 08 Nov 2008 Posts: 30194 Location: Hertfordshire and Hampshire
Posted: Tue Jan 31, 2017 2:14 pm Post subject:
On the basis I would to prefer an old and presumably worn (possibly critically) IMSB to be replaced with a new IMSB, I would strip both seals prior to fitting (it makes no sense not to).
In terms of the space behind the IMSB, every extra bit of "headroom" would improve the prospects of genuine turbulent IMSB wash.
For general reference, here is photo of single-row ex seals:
And although my previous description may have sounded off the cuff, I do agree the mod is NOT for the DIYer to attempt (not least the cost of the proper tools required for insertion and correct refit outweigh the labour savings)
If time was of the essence, then yes, only pulling the outer seal is better than pulling no seals!
Joined: 20 Dec 2008 Posts: 500 Location: Yorkshire
Posted: Fri Feb 02, 2018 2:23 pm Post subject:
What a thread!
I've been away from Porsche for a while but the car still waits patiently for use and attention. That time has now arrived. My IMS bearing was inspected when my clutch was done @ 15 - 20k miles ago (cars on 85k now) when the IMS cover was changed. The local and trusted Indie said it was fine. After reading this thread end to end - and I did, sort of puts things into perspective mostly the input from Baz.
My view is if it reaches 100K then anything after that is a bonus and a rebuild is due anyway due to natural wear and tear. No guesses for where I would have the unit rebuilt.
Baz's statement should go down in Porsche history.
It's been a few years since I drove the car, now where's the rear window washer switch? _________________ 996 C2 Manual
Arctic Silver
Goodyear 's GSD3
Down 10mm
Lloyd 6 Light -Konvertierung..
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