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I have a 99 Carrera with 81k, I did replace the bearing with the IMS solution, just to never worry about that again, and glad that I did it, the old bearing was very wobbly, I don't think it would last very long, on my 02 cents even when I hear that the dual row it is not a big issue, is still a 20-year-old part that the seals had been degraded and the oil has washed the internal grease so it was running with little lubrication that won't last forever, I did remove the seals and it did not have any grease, might a very circumstantial thing. Regardless, I'll consider putting a new bearing than running the old one.
The Bosch are fine as are the aftermarket ones that LN sells. Having your original rebuilt by a reputable company is also an option.
I didn’t know that .2 injectors were $300 a piece!
.1s are “only” $100, so $600 for a new set of OEM isn’t that bad.
At $1,800, I’d be looking for an alternative too.
But most people that I trust recommend staying away from rebuilt injectors for the M96.
Posting this to give you a different view.
When replaying the clutch I would check the IMS bearing for play and base my decision on that.
If leaving it in, I would remove the seal.
I left mine in after doing the above on my 99 C2 at 112k miles (currently 120k miles).
Thanks for all the responses, I'll keep the appointment with the shop to do the IMS then. The guys uses both LN & EPS but has a slight preference for the latter. RMS is also included in the job.
Picking up the car tomorrow (well, actually later today being that it's past midnight here)
The LN Engineering folks aren't keen on the roller bearing and they have a point https://lnengineering.com/products/t...-bearings.html
So you should read this if you haven't already. As an engineer, I would have thought the roller bearing was best, but I did like the ceramic materials used in the IMS Retrofit. Let us know how it goes!
The LN Engineering folks aren't keen on the roller bearing and they have a point https://lnengineering.com/products/t...-bearings.html
So you should read this if you haven't already. As an engineer, I would have thought the roller bearing was best, but I did like the ceramic materials used in the IMS Retrofit. Let us know how it goes!
Shocking that a someone wouldn't like a competing company's design.
Oh wait they do like the roller bearing they sell.
I like to follow Lee Jenkins of Hartech, UK. The EPS bearing seems to be more popular in Europe. Every month Lee is posting another failure associated with EPS.
Contact Lee and let him tell you want he thinks about the EPS roller bearing.
Look how it doesn't sit flush on the shaft. It tends to grind into the flange. In this case, it appears it broke the center bolt.
Got a 996.2 with 61.5k miles. Replaced my oem imsb a long time ago with the LN Retro. Just replaced it again with the Retro last year. Here is a picture of it after 10+ years and alot of track days.
As a side note, I ran Millers Nano 5w40 throughout that time and changed the oil approximately every 600+ miles. Fresh oil for the track, changed the oil after being on the track, as well as 2x a year if I didn't track the car at all. No bore scoring and good oil tests. Good parts with fresh oil matters.
It still looks brand new. But it does need to be replaced in contrast to the LN Solution. Bet the dual row imsb is in the same boat. Everything wears with usage and age.
Leaking fuel injectors have been found to cause bore scoring.
At 24 years old they’re due for replacement.
Use new OEM Porsche injectors only!
NOT aftermarket or rebuilt/refurbished/remanufactured
LN Engineering sells an injector that's not Porsche branded. I'd trust that.
Make sure the car has the original engine and wasn’t a Porsche replacement early in its life. I have a 99 which I believed to be a dual row until I pulled the IMS using the LN tools and to my dismay it was a single row since I didn’t check the engine serial number.
Make sure the car has the original engine and wasn’t a Porsche replacement early in its life. I have a 99 which I believed to be a dual row until I pulled the IMS using the LN tools and to my dismay it was a single row since I didn’t check the engine serial number.
This is a very good point. Apparently quite a few engines were replaced under warranty by Porsche for RMS issues. My 2002 targa had a replacement engine and none of the service records say a word about it.
Posting this to give you a different view.
When replaying the clutch I would check the IMS bearing for play and base my decision on that.
If leaving it in, I would remove the seal.
I left mine in after doing the above on my 99 C2 at 112k miles (currently 120k miles).
checked and left original IMS bearing in @120k and now at 120k! I salute you sir!
I’m at 120k on original IMS bearing and oil analysis and filter autopsy are clean…..
06-29-2023, 05:02 PM
