ims bearing panic

[broken2bfree]

I am thinking I am going to send bearing back. Then drop oil pan and inspect both pan and sump screen

[broken2bfree]

Originally Posted by broken2bfree

I am thinking I am going to send bearing back. Then drop oil pan and inspect both pan and sump screen

I should mention that I bought this car with the intention of converting to electric. I just want another 24k miles out of the engine. It is important to me that the engine be in good running condition when I do convert so That I can sell it as such. I see used running 986 motors selling for 3-5k and that will go a long way in electric components.

[broken2bfree]

Trusted Mechanic told me it was bearing material for sure.

[Skrapmot]

Originally Posted by broken2bfree

Trusted Mechanic told me it was bearing material for sure.

Wouldn't bearing material be magnetic? That's how the magnetic drain plugs and IMS guardian works to detect bearing failure.

[seningen]

Originally Posted by broken2bfree

Trusted Mechanic told me it was bearing material for sure.

Hmmm -- I would think that bearing material would be ferrous.

What about aluminum shavings -- but that could be coming from anywhere in
an M96 engine. Was there any noise from the timing chains. I could
see where there maybe a tensioner paddle that has worn through the plastic
and is now etching some aluminum.

I would recommend getting it analyzed and then you will at least a know what your dealing with.

Mike

[shadrach74]

Babbitt is primarily tin (I believe) and is non ferrous. It is used in sleeve bearings, not ball bearings. If you have babbitt material in your, oil the source is likely a rod or main bearing...The IMS is a ball bearing.

[broken2bfree]

Originally Posted by shadrach74

Babbitt is primarily tin (I believe) and is non ferrous. It is used in sleeve bearings, not ball bearings. If you have babbitt material in your, oil the source is likely a rod or main bearing...The IMS is a ball bearing.

I hope its not a rod bearing.

[broken2bfree]

If I have to pull this engine, it will quickly become for sell. I wouldn't spend my hard earned dollars on rebuilding a motor I want to replace anyway. I think for me that money is better spent on an hv warp 11.

[BYprodriver]

If the IMS to crank chain wore thru the wear pad of the aluminum tensioning paddle shown on the right side in this pic of a 2000 Box engine crank housing, it will make shavings like that until it breaks in half. If you remove the chain tensioner right beside the oil filter you can get a peak at the paddle & Maybe see if it is damaged. The chain & wear pad are on the backside, so it could be excessively worn, & you can't see it thru the hole. When you remove the oil sump plate you will probably see more shavings there.

[seningen]

Originally Posted by BYprodriver

If the IMS to crank chain wore thru the wear pad of the aluminum tensioning paddle shown on the right side in this pic of a 2000 Box engine crank housing, it will make shavings like that until it breaks in half. If you remove the chain tensioner right beside the oil filter you can get a peak at the paddle & Maybe see if it is damaged. The chain & wear pad are on the backside, so it could be excessively worn, & you can't see it thru the hole. When you remove the oil sump plate you will probably see more shavings there.

This is what I was referring to.

You can fit a boroscope through the hole and inspect it as well. We did this once --
found one of the chains (of two) had broken. We saved the engine - but it still had to be torn down and put back together with a new paddle and chain assembly.
The chain broke because it was wearing a groove in the paddle.

That's a lot of shavings -- and my gut says that you would be down to some material
in the bearings that was ferrous (isn't there copper in most bearings -- I know there is on the 944)

Mike

[broken2bfree]

There was a slight tick in the area of cylinders 4 and 5 that I thought might just be injectors. It was faint.

[Skrapmot]

Originally Posted by broken2bfree

I am thinking I am going to send bearing back. Then drop oil pan and inspect both pan and sump screen

With all that weird junk, I would definetly do that .

[broken2bfree]

I would have thought metal would be magnetic. He explained it was babbit material, which is not magnetic. He also said that babbit would ball up and turn to goo just like it did. as much material as there was in that filter, he couldnt believe the car ran good before i parked it. He's not a porsche guy and had no clue what an ims bearing was, but said it is bearing material, and if ims bearing is what fails on a porsche then odds were thats the remainants of an ims bearing.