IMS again

[mikefocke]

Hey, we need to rehash a subject that must have been discussed hundreds of times on this forum already. And thousands of time on all the Boxster forums taken together. Then add in the 911 forums...

[maytag]

Originally Posted by mikefocke

Hey, we need to rehash a subject that must have been discussed hundreds of times on this forum already. And thousands of time on all the Boxster forums taken together. Then add in the 911 forums...

I'm with Mike on this..... I think I could probably find 5 posts online SOMEWHERE that read nearly word-for-word like the post below.

You're "keen to hear others thought"? Probably not too keen, or you'd have read then already. Your post rehashes a line of thinking that's been argued dozens of times just in the 2 years I've owned my car. Don't know what'd make your query any different?

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[Starter986]

Originally Posted by mikefocke

Hey, we need to rehash a subject that must have been discussed hundreds of times on this forum already. And thousands of time on all the Boxster forums taken together. Then add in the 911 forums...

I agree with Mike. However on another note, Mike, which tires do you recommend and which oil are you running? I can't find anything online.

[marsheng]

Sorry my mistake. I read about several suppliers with oil fed solutions and never having worked on a motor, didn't realize it was a sealed bearing. That eliminates a huge number of issues.

There are however many sealed bearings that last virtually forever. If so few fail, then it could have been a batch problem from the supplier.

This discussion however made me rethink 'hope it lasts' option to and oil fed solution.

Thanks for the input.

And now for those tires and oil, I will !!!!!!!!!!!!!!!!!!!!!!!! Ha Ha

[maytag]

Originally Posted by marsheng

Sorry my mistake. I read about several suppliers with oil fed solutions and never having worked on a motor, didn't realize it was a sealed bearing. That eliminates a huge number of issues.



There are however many sealed bearings that last virtually forever. If so few fail, then it could have been a batch problem from the supplier.



This discussion however made me rethink 'hope it lasts' option to and oil fed solution.



Thanks for the input.



And now for those tires and oil, I will !!!!!!!!!!!!!!!!!!!!!!!! Ha Ha

Yeah, the oil-fed solutions are changing the bearing to an open bearing, which requires constant lubrication. (iiuc)

For me, I wish someone would develop a replacement bearing that's more like a traditional crank bearing, with a direct oil feed to it, and bearing "shells". This makes so much more sense to me, and would have the happy benefits of still staying largely "in-place" if the bearing failed, si timing remains close, meaning no other parts in the motor get damaged. It would also be easily replaceable if damaged.

But that would be FAR too easy for the Porsche community.... Haha. I mean, it'd be almost sacrilegious to put a simple and robust bearing in a motor with 5 chains, all those ramps and hydraulic tensioners, the craziest Air/Oil separator system I've ever seen.... etc etc.

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[piper6909]

Originally Posted by maytag

Yeah, the oil-fed solutions are changing the bearing to an open bearing, which requires constant lubrication. (iiuc)

For me, I wish someone would develop a replacement bearing that's more like a traditional crank bearing, with a direct oil feed to it, and bearing "shells". This makes so much more sense to me, and would have the happy benefits of still staying largely "in-place" if the bearing failed, si timing remains close, meaning no other parts in the motor get damaged. It would also be easily replaceable if damaged.

But that would be FAR too easy for the Porsche community.... Haha. I mean, it'd be almost sacrilegious to put a simple and robust bearing in a motor with 5 chains, all those ramps and hydraulic tensioners, the craziest Air/Oil separator system I've ever seen.... etc etc.

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It's already been done, sort of, but it still uses an external oil feed:

IMS Solution – The only permanent fix for M96/M97 engines intermediate shaft bearing problem

I love how they call it the "Permanent fix" but only guarantee it for 5 years!

[BoxMann]

Originally Posted by piper6909

I love how they call it the "Permanent fix" but only guarantee it for 5 years!

You can always buy a 987.2. The IMS bearing in those are guaranteed for life. In addition, I will personally guaranty it.

[piper6909]

Originally Posted by BoxMann

You can always buy a 987.2. The IMS bearing in those are guaranteed for life. In addition, I will personally guaranty it.

haha! What I paid for my 986 plus the cost of another motor, if I should ever need one, is still less than half the cost of a used 987.2

[mikefocke]

There are several IMS kits which provide roller bearings which use pressurized oiling.

There is a kit using a plain bearing similar to the one on the other end of the camshaft and this kit adds pressurized oiling (The Solution).

[maytag]

Originally Posted by mikefocke

There are several IMS kits which provide roller bearings which use pressurized oiling.



There is a kit using a plain bearing similar to the one on the other end of the camshaft and this kit adds pressurized oiling (The Solution).

I think the roller bearing is a disaster, regardless of pressurized oiling.

I'm talking about a plain bearing.



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[JFP in PA]

Originally Posted by maytag

I think the roller bearing is a disaster, regardless of pressurized oiling.

I'm talking about a plain bearing.



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You just described the IMS Solution.

[piper6909]

Originally Posted by maytag

I think the roller bearing is a disaster, regardless of pressurized oiling.

I'm talking about a plain bearing.



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As I wrote in post #8, it's already been done.

IMS Solution – The only permanent fix for M96/M97 engines intermediate shaft bearing problem

Plain bearing.

They call it a "permanent fix" but it's only guaranteed for 5 years! HA!