makoshark72

2006 C2S 24,000 miles, no issues

USMC_DS1

Hmmm... 118,866 views and no documented IMS failures. There are likely better things to contemplate.

DoninDen

Yes, but remember "on a post mid 2005 997.1 after they went to the larger bearings." it does occur on the 996 and the early 997 normally aspirated engines. Although extremely rare and preventative options are available, when IMS bearing does fail is catastrophic!

John Perser

2006 997S tip cab 28,000 Mi - No failure

Tewills

Thanks for all the posts on this thread - very helpful!

tsearle00

Two weeks ago while my car was in for an oil change, they approached me with the dissected oil filter. Metal particles in the filter. My shock is just now fading. The car is a 2005 997S with a build date of 03/2005. I had 33000 miles on it. Never tracked but driven spiritedly only on weekends. Magnetic drain plug, 1/2 dozen oil changes and new L&n hybrid bearing in place. What next?

DoninDen

Was the new L&N bearing in place before the metal flakes were found? First thing, don't start the engine, call L&N and PCNA to get their thoughts.

atlast911

Please post the results/findings. I thought I was safely out of the woods with the LN kit installed last year on my 05'. I really hope those of us with this kit installed do not have to be terrorized by another looming catastrophe. I just don't have the stomach for that. Was the metal magnetic?

DoninDen

tsearle00 Joined in 2001 and that was his first post. Hoping he can verify and explain.

Ben Z

It says he joined in 2011 not 2001, and why should he have to defend himself to you or anybody just because he hasn't posted anything until now. Maybe he just didn't have anything to say before.

And what does he possibly have to gain by calling PCNA. Even if his car is inside the class action suit, he replaced the OEM bearing with an LN, i.e. aftermarket mod, so not sure how that would affect eligibility.

And he described it as "metal particles". You changed it to "flakes". Big difference. Tiny particles could be coming from anywhere in the engine, not necessarily the IMSB, and might not necessarily be predictive of impending catastrophe. This is why in addition to having the LN bearing installed in my '05 I also got a full bumper-to-bumper exclusionary warranty on it.

To tsearle00: is this shop a Porsche specialist with water-cooled engine-building creds, and were they the ones who installed the LN bearing? How well do you trust them? That's what I would want to know before attempting to answer your question of "what next?".

PS: So far I have 25K miles on one of the original single-row LN retrofit bearings with no issues. To be fair and honest, the car went 32K miles on the OEM factory bearing and it came out pristine.

DoninDen

Seems strange that first post is about something no one has heard about happening before. Additionally, he posted it and then nothing for four days. If you posted a reply that you were concerned that your car might blow up, wouldn't you be more active if people were trying to help you understand your situation? Lots of trolls out there...

Ben Z

No one heard of finding metallic particles in the oil filter of a car with the LN bearing before? You're making an unfounded assumption that it's coming from the IMSB.

Probably not if the first and only reply "trying to help me understand my situation" advised me when I had clearly stated I had the oil change 2 weeks ago and obviously have started the engine and driven the car. And secondly, advised me when LN is a parts retailer not a garage; and PCNA would be about the last source anyone would expect to get useful, helpful information on such an issue, especially with a 10 yr old car. Just saying...

DoninDen

Assuming the reason tsearle00 posted in this thread was out of concern that the metal "particles" could be an indication of IMSB problems, my advice remains don't start the car and get advice from L&N and PCNA. I don't know the size of the particles.

Given how rare IMSB failures are and that the L&N bearing appears to be a good solution, going with your gut on how much you "trust" your mechanic, who probably has not seen an IMSB failure does not seem like good advice. In fact it is just reckless, silly advice.

By the way, what does "Just saying..." mean in adult talk?

RollingArt

There has most definately been failures of the later style, larger IMSB. See post #110 of this thread for just one example. There have been others. Confirmed. You just can't hide from it.

https://rennlist.com/forums/997-foru...ml#post8924078


I think tsearle00 is saying that after the mechanic found the particles during a routine oil change, he had them go ahead and change the bearing, flush the oil 6 times, and install a magnetic drain plug. The "what's next" comment is asking what will the next problem bring.

It's kind of all jambed together and a bit hard to decipher, but that's my take on it. Maybe he can clear that up for us.

Ben Z

And it would be my advice too if he hadn't already started it who knows how many times in the 2 weeks since they found the particles. To quote Austin Powers, that train has sailed.

LN (it's not L&N) is not a Porsche repair shop. If anyone I'd say ask Jake Raby. As for PCNA I doubt if you call them you get a mechanic on the line and even if you did, their perfunctory advice would most certainly be to take the car to an authorized Porsche dealership service department.

Idk I'm just a kid of 60. Maybe someone significantly older can chime in with a proper definition