My IMSB - Story & Pic's

[Jake Raby]

Corrosive wear. This is seen all the time with engines that see 30k miles in 13 years. Sitting static and having long service intervals.

[Paul]

Jake

Wonder if a proper IMS shaft could be developed that uses pressure lubricated bearings like the air cooled motors. Would be a final and much better solution for rebuilders. The kits that spray oil on the stock bearing seem to have found a way to get pressurized oil into that area. Couldn't a flange be developed to hold a pressure lubed bearing?

[Snowman]

ATX, I recently relocated to Austin. Who do trust with your car?

Thanks in advance.

[ATX_Boxster]

Originally Posted by ganseg

What do the seals on the IMSB say? Can you tell what lube is between the seals (any grease)?

ganseg - It's an NSK bearing: NSK 068 6204DUA17 Japan (The 068 imprint was very tough to read, even with a magnifying glass so I hope that I'm being accurate.)

There appears to be grease on the outside of the seal, but I'm not sure what type. I wiped the bearing down with a paper towel and the grease is a dark reddish/brown color. Definitely darker than engine oil.

The bearing does not smell burnt.

I may disassemble the bearing at some point to look for damage. If I do, I'll post up some more pictures.

Originally Posted by Jake Raby

Corrosive wear.

Thanks Jake. If you see this type of corrosive damage on the flange, I'm almost afraid to start thinking about what else could possibly be corroded internally. Any areas that you would recommend paying attention to? Please be kind if you can - as I'm finally sleeping better at night.

Originally Posted by Snowman

ATX, I recently relocated to Austin. Who do trust with your car?

Snowman - welcome to Austin. Sent you a PM...

[Perfectlap]

Originally Posted by ATX_Boxster

Thanks Jake. If you see this type of corrosive damage on the flange, I'm almost afraid to start thinking about what else could possibly be corroded internally. Any areas that you would recommend paying attention to? Please be kind if you can - as I'm finally sleeping better at night.

Time for a Blackstone oil analysis?

[Jake Raby]

Originally Posted by Perfectlap

Time for a Blackstone oil analysis?

That won't tell much other than TAN and TBN.

[ATX_Boxster]

Jake - I have relatives in Atlanta. One of these days I would like to take a road trip, drop my car off and have your shop do a complete tear down/rebuild with some enhancements.

[Jake Raby]

Originally Posted by Paul

Jake

Wonder if a proper IMS shaft could be developed that uses pressure lubricated bearings like the air cooled motors. Would be a final and much better solution for rebuilders. The kits that spray oil on the stock bearing seem to have found a way to get pressurized oil into that area. Couldn't a flange be developed to hold a pressure lubed bearing?

I already invented that. Watch the video and see the information here.

The IMS Solution

[Paul]

Originally Posted by Jake Raby

I already invented that. Watch the video and see the information here.

The IMS Solution

Well done! Any hope for double row owners short of splitting the case and sending the IMS into your shop?

[Jake Raby]

Originally Posted by Paul

Well done! Any hope for double row owners short of splitting the case and sending the IMS into your shop?

Not applicable to dual row owners without shaft intervention requiring engine disassembly.

[fusionist]

Originally Posted by Jake Raby

Corrosive wear. This is seen all the time with engines that see 30k miles in 13 years. Sitting static and having long service intervals.

How often do you have to get a Boxster up to temperature to avoid this type of wear?

[Jake Raby]

Originally Posted by fusionist

How often do you have to get a Boxster up to temperature to avoid this type of wear?

Thats dependent upon the storage characteristics of the oil that you are using, and many other variables.