which ims bearing upgrade

[Jamesp]

Originally Posted by Gelbster

"once the cases are split apart"
Funny -that is cheating :-).
The trick as I said is to suggest a how-to w/o dismantling the engine. How can it be done as part of a normal IMSB replacement?

It's all about tools and IMS shafts. I'm not going to do this so I'll fess up. A fairly simple, but expensive tool could be made to drill a couple of holes from the inside of the IMS to the outside of the IMS through the sprocket splitting the twin chain sprockets as I did with mine (see YouTube). Then a (preferably high temp Viton) sealed 8 dollar greased bearing can be installed which will last for well, the life of the car. Likely. The tool is the key, the rest is just a simple bearing replacement. As an aside, a sealed bearing (as opposed to an open bearing) keeps particulate contamination out of the races which is nearly instant death to the bearing. Keeping the grease in the bearing keeps it lubricated and alive. Porsche's error? They did not account for the sealed intermediate shaft delta pressure pulling or pushing oil across the bearing. Solution? Vent the shaft.