Quote:
Originally Posted by piper6909
I'm not trying to debate the IMS failure/replacement issue. I've decided not to do mine, and I have a 2002, which has the highest failure rate.
I was just pointing out that, in fact, a company made it possible to service them.
And, I too, am concerned about metal shavings. But I'd be surprised if they don't have a way to address that possibility.
Weakening the case? Well, I don't know that strength is critical at that point. Especially since the hole will be filled in with a flange. Yes, their flange. Because the hole would then be bigger and you need a bigger flange that fits it. And obviously no one else makes it. If they did, I guess you could use their flange too.  |
Porsche uses two bolts hold the case togeather above and below this opening. Some years had so many oil leak complaints coming from around the IMS flange that they released a flange with an updated seal, and recommended replacing the case bolts with longer ones with sealant on the treads. They released a TSB on the subject, referring to movement of the cases due to thin casting in the area.
The company you mentioned also has a similar “fix” for leaking RMS which machines out the case crank opening to accept their proprietary crank seal.
LN has an update “kit” for the cars with the oversized bearings as well, which converts the engine to a serviceable IMS configuration. The engine does have to be disassembled to do the install, but any future service can be done through the factory case opening. No case modifications are involved.
At the end of the day, doing something just because you can is not always a good idea...