Ims replacement life

[B6T]

I didn't realize installation error was such a common occurrence...

It would be interesting to see how they did it at the factory.

[JFP in PA]

Originally Posted by B6T

I didn't realize installation error was such a common occurrence...

It would be interesting to see how they did it at the factory.

It was pressed into the shaft while being held in a fixture so nothing could move out of alignment. All done in one clean movement.

Unfortunately, the field retrofit process has one correct method and an infinite number of ways to do it wrong.

[Boxtaboy]

Porsche's original bearing must be the best then cause I'm still on my original factory bearing 15 yrs later. 01 986 with 72k miles, oil changed with Mobil 1 0w-40 every 15k miles or 2 years! Still rockin and rollin.

[mikefocke]

Originally Posted by Boxtaboy

Porsche's original bearing must be the best then cause I'm still on my original factory bearing 15 yrs later. 01 986 with 72k miles, oil changed with Mobil 1 0w-40 every 15k miles or 2 years! Still rockin and rollin.

Marc has just passed the 300k miles mark on his original '01 IMS bearing. Does that mean anything more than one data point?

[Boxtaboy]

Originally Posted by mikefocke

Marc has just passed the 300k miles mark on his original '01 IMS bearing. Does that mean anything more than one data point?

No it doesn't. I think Marc's is an 02 btw. Regardless, I'm not worried. I just keep using mine as I do any other car I've ever owned, and I don't even think about replacing the IMS. If it blows up, so be it. I already got my money's worth. I think the problem is a lot smaller than its made up to be, and people worry too much...

[Bootlegger]

If you are going to replace the IMSB do it right. Had mine pulled at 32K along with the clutch assembly, water pump, LT thermo, belt, AOS, chain tensioners, radiator cap. LN bearings done by qualified installers using a pre-qualification approach allows for stress free driving. Just do it....right.

[Smallblock454]

@particlewave: Just smile. Life is too short.

Regards, Markus

[jcslocum]

This like arguing over whether is water wet. There are too many opinions!! It's your car, do what you want with it but most of all enjoy it. Use an old beer can for your IMSB or Unobtanium, as long as it works for you, that's cool. I did not use the ceramic bearing, installed it myself (wicked easy), and put my young daughter in the car as her DD. I'm not worried, I did this as a maintenance measure @ 122K miles as we were in there to change the clutch and make the car solid and reliable as a DD with a pretty young girl driving it. The unfortunate part of an IMSB failure is that it is fatal to the engine. Not like a water pump that will leave you stranded but fixable.

It's your car, enjoy it...please.

[jdraupp]

Four subjects that are sure to create a firestorm here. IMS, tires, oil....and cats.

[glenf]

I just recently purchased my 01 boxster with 71k miles. Concerned with all these articles on IMS replacement. How do I find out if previous owner performed this maintenance. I have a carfax of all maintenance completed but not of that.

[JFP in PA]

Originally Posted by glenf

I just recently purchased my 01 boxster with 71k miles. Concerned with all these articles on IMS replacement. How do I find out if previous owner performed this maintenance. I have a carfax of all maintenance completed but not of that.

If you do not have the original paperwork from the shop that did it, it was not done so plan accordingly.

[Timco]

Originally Posted by JFP in PA

If you do not have the original paperwork from the shop that did it, it was not done so plan accordingly.

No paperwork here. My Indi brought the cam lockers to my shop and swapped IMS with LN right where it sat. I had pulled trans and was doing a clutch. $900 (handed him a grand) and I have the old one and the SN stickers to show it was done.

Seems to be just as much anti JR koolaid as pro. I sure as hell would not buy nor want an engine that's had shavings circulating around. That would be a no go for me to own, not surprising they won't touch one either. I sure wouldn't.

[JFP in PA]

Originally Posted by Timco

No paperwork here. My Indi brought the cam lockers to my shop and swapped IMS with LN right where it sat. I had pulled trans and was doing a clutch. $900 (handed him a grand) and I have the old one and the SN stickers to show it was done.

Seems to be just as much anti JR koolaid as pro. I sure as hell would not buy nor want an engine that's had shavings circulating around. That would be a no go for me to own, not surprising they won't touch one either. I sure wouldn't.

You are missing my point. You have some documentation to support the installation; but we see quite a few PPI candidates every year, and some claim LN IMS retrofits without any supporting documents, stickers, or photos. We have even had one that claimed it had an LN IMS Solution done. Only problem was the car was pre 2000, making it a dual row, and this occurred before LN released the dual row Solution. On the lift, there was no special spin on oil filter adaptor and oil line running to the bell housing, a dead giveaway. Yet the car's owner never backed off, even after we told the prospective buyer to move on to other cars. Sometimes people simply lie when it is to their benefit.

An experienced eye can often tell whether the car has been apart or not, but the average buyer usually cannot, or cannot gain access to see if it has been worked on. So when asked, we tell people that if there is no supporting documentation, assume it has not been done, and adjust your bid accordingly, or move on.

[jdraupp]

Originally Posted by JFP in PA

If you do not have the original paperwork from the shop that did it, it was not done so plan accordingly.

If you have no record and the owner didn't advertise it when he sold it then it wasn't done (to build on timco scenario.)

[Myoung73]

If it was done with an LN kit you might have a sticker with an LN serial number somewhere in the car. Mine was in the trunk. Sometimes in the door as well. Worth a check especially if you have no record of it. If you find one you can contact LN with the serial number and they should be able to tell you when it was done and possibly by who. In my case I had the DOF installed and found the sticker afterwards lol. But in the end it was done 5 years back so was technically "almost due" based on LNs warranty etc. at the time. and I was happy to do the DOF anyway.

[Retroman1969]

I've thought long and hard, but with 170,000 miles on my car, I'm not going to spend thousands on upgrades since it is on borrowed time after this anyway. If and when it blows, I will drop in a lower mileage used 2.5 and have the IMSB and chain tensioners replaced during the install. I'll likely go with the "solution" as it's the more permanent piece-of-mind. Since the ceramic ball bearing one has a recommended replacement time, I'd have to be replacing it every 18 months with the high number of miles I rack up on a car. Most owners won't have to worry about that.

[p3230]

I bought my 2003 S with 100000KM on it didn't get any paperwork with it but had a long talk with the owner had a complete checkup of the car done and was safety tested and etested so I know it was mechanically fit. He also told me he had regular maintenance done on the car and oil changes and that was good enough for me. I don't intend also to change anything on the car like IMS AOS water pump thermostat I just intend on driving it that's all and enjoy it.

[thom4782]

For me, this comes down to two issues

Issue 1: The Bet

IMSB options differ by design and cost. Some designs will probably last longer than others. My own beliefs are these. The IMS Solution has the longest service life and may cause the least collateral damage when it fails. Ceramic bearings likely have the next longest service life and steel bearings have the least. When ceramic or steel ball bearing IMSBs fail, the collateral damage can range from minimal to catastrophic.

Issue 2: The Cost of A Lost Bet

If your handy a turning a wrench, have all the necessary special tools, and have access to what's needed to clean out debris, then your financial risks are lower and the questions whether to replace and what to replace the IMSB with become more difficult to answer. That, however, isn't me. I'd need to shop out the replacement / rebuild and doing so would open a big drain in my wallet at local indie rates. The price tag would be in the $ thousands.

My Decision

I had two goals: keep my 125K mileage car around for a long time and minimize the odds of me paying a large bill if the IMSB failed. I choose the Solution as my bet. Time will let me know if I won.

As for the bearing that came out of my car, it was a single row that looked pristine and didn't wobble. When I opened up the seal, however, it was clear the lubricating grease had washed out. Only the Porsche gods know how much longer it would have lasted.

Good luck...gather as many facts and opinions as you can and try to separate the marketing hype and unfounded opinions from what's real. Hint: if LN bearings failed frequently the boards would be screaming with condemnations. They're not which should tell you something.

[DWBOX2000]

Ugh! Well if that is an issue, I am cooked. Thanks.

[Shred]

As others have said and lots of info on the LN Eng. site.
Use a recommended installer when possible so they do a pre-qualification on your car, to see if it is even fit for a new IMS. If you have the money, do the IMS solution.
If there is already debris in the engine and the current IMS is failing, it is already too late.

I went with the Single Row even though at the garage I use, (apart from LN and Flat6 Innov) was the only recommended 'Solution' installer at the time.

The reason was, by the time I will need another IMS changed out for another piece of mind, I would surely need a new clutch or 2 by then. Also, IMS is not the only thing that can cause catastrophic engine failure on the M96. Can always spend the money on another water pump for example

It really depends on you, how you see your car and usage