IMS - Going with SKF hybrid

[Silber]

Originally Posted by JFP in PA

Could you explain to everyone how you would extract the IMS bearing without pulling on the center bolt?

Here is one example of a procedure:

IMS Bearing Pulling Tool

this is also a good read from the same page:

Sourcing Your Own Porsche IMS Bearing

I diverge with him in that I am using a polymer cage based on its material properties being suitable for the temperatures seen in the Boxster engine.

Would I have preferred stainless or brass cage, probably. However, the polymer SKF uses absorbs lubricant, so can prevent failure in an oil starvation scenario. The material properties of PA66 glass reinforced Resin are such that the life of the cage should be longer than the life of the car, even at the temperatures seen in the Porsche engine.

[78F350]

Originally Posted by Silber

Here is one example of a procedure:

IMS Bearing Pulling Tool

this is also a good read from the same page:

Sourcing Your Own Porsche IMS Bearing

....

Just a note: Burner did break the center bolt during his initial attempt to extract it:
http://986forum.com/forums/boxster-cayman-parts-sale-wanted/62324-wtb-ims-center-bolt-dual-row.html

He has some amusing/informative Youtube Boxster videos.

[JFP in PA]

Originally Posted by Silber

Here is one example of a procedure:

IMS Bearing Pulling Tool

this is also a good read from the same page:

Sourcing Your Own Porsche IMS Bearing

I diverge with him in that I am using a polymer cage based on its material properties being suitable for the temperatures seen in the Boxster engine.

Would I have preferred stainless or brass cage, probably. However, the polymer SKF uses absorbs lubricant, so can prevent failure in an oil starvation scenario. The material properties of PA66 glass reinforced Resin are such that the life of the cage should be longer than the life of the car, even at the temperatures seen in the Porsche engine.

I think I should point out that, in my opinion, he was extremely lucky the pilot bearing tool held, as they are not designed for this type of load. We know of two cases where the center bolt failed during extraction and the owners resorted to this tool. When the fingers on this type of tool failed, we ended up with the cars to extract the bearing by other means.

As for using an off the shelf bearing, it is your car and your money. I can tell you that the hybrid ceramic design that LN uses is made exclusively for them, and cannot be sourced.

Over the years, several people have tried all sorts of replacement bearings. Some have worked, others not so much. As a shop, we have to go with what we know works, and leave the experimentation to those with the time and the nerve to assume the risk.

[78F350]

There are many forum members that have purchased the (LN Engineering) tool set and will probably not use it again for years, if ever. There are several loan-with-deposit offers buried in the classified section. If you don't want to purchase, look there or post a wanted thread.

You can have a very expensive mistake trying to improvise and learn as you go. The correct procedure, with the correct tools is pretty safe.

[Silber]

Originally Posted by JFP in PA

we ended up with the cars to extract the bearing by other means.

Something like this?

https://www.amazon.com/Goplus-Bearing-Internal-Extractor-Remover/dp/B01N4UJFRH/

or this?

https://www.amazon.com/Kukko-KK21-6-Internal-Extractor/dp/B00D8VL0X4

regards,

Silber