Motor # for IMS Research

[piper6909]

Originally Posted by JFP in PA

There is no debate. ANY 2006 car, or engine replaced in 2006 will carry the oversized non serviceable IMS bearing, period.

EPS made a tool to bore out the block so you can replace the oversized bearing.

https://www.youtube.com/watch?v=F21suRIQdvM

I am, however, concerned about getting metal shavings inside the block. I sure they have thought of that, but maybe for time compression decided not to show that in the video.

[JFP in PA]

Originally Posted by piper6909

EPS made a tool to bore out the block so you can replace the oversized bearing.

https://www.youtube.com/watch?v=F21suRIQdvM

I am, however, concerned about getting metal shavings inside the block. I sure they have thought of that, but maybe for time compression decided not to show that in the video.

Which weakens the cases and gets metal into the engine, and requires you use their flange. Besides which, it is unnecessary as engines running the oversized bearing with the rear seal removed do not suffer failures, so why bother?

[piper6909]

Originally Posted by JFP in PA

Which weakens the cases and gets metal into the engine, and requires you use their flange. Besides which, it is unnecessary as engines running the oversized bearing with the rear seal removed do not suffer failures, so why bother?

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.

[JFP in PA]

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...

[piper6909]

Originally Posted by JFP in PA

At the end of the day, doing something just because you can is not always a good idea...

Agreed.

[piper6909]

Originally Posted by JFP in PA

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.

Split the halves open, take the original bearing out, use a smaller bearing that can be extracted from the existing casing hole, and use some ring or half rings as shims to make a seat for the smaller bearing in the original bearing's hole? Did I guess that right?

[mikefocke]

Any boring has to be super precise to maintain the angle of the crank and/or camshaft to case angle or the pressure on the bearing is likely to be off center creating a ball on race (or whatever design) contact that it was not designed for. So in addition to shavings and bearing selection, you have to worry about precision of machining. Do you have the tools and experience to do it right?

[piper6909]

Originally Posted by mikefocke

Any boring has to be super precise to maintain the angle of the crank and/or camshaft to case angle or the pressure on the bearing is likely to be off center creating a ball on race (or whatever design) contact that it was not designed for. So in addition to shavings and bearing selection, you have to worry about precision of machining. Do you have the tools and experience to do it right?

Not that I plan on doing it, but they rent the tools that include a brace that bolts to the block so you have the proper alignment. Take a look at the video. Besides, you're not boring the bearing seat, you're boring a hole large enough so you can pull the bearing out. The part you bore out does not have any contact with the bearing once it's seated. Yes, I thought about shavings, too. But anyone who might be interested in doing it can ask them. I'm sure they have thought of it too.

:EDIT:
So here's what I found in the comments when someone asked about the metal shavings:

The reply from EPS:
"...The key to preventing the shaving from falling inside the engine is the boring tool used. The shaving are pushed out as the mill tool is cutting by the air that is exiting through the cutting flutes. The engine is pressurized from the inside through the oil drain hole with approx 15 PSI. The pressurized engine will have a constant air flow exiting at the boring site prohibiting any shaving from entering the engine. Therefore, our EPS IMS Bearing can be the external solution without dissembling your engine..."

I don't know if that's sufficient or not.

Someone also pointed out that the bearing itself also acts as a dam to block the shavings from getting in.

[Gilles]

Originally Posted by JFP in PA

At the end of the day, doing something just because you can is not always a good idea...

Wise words, just get that idea out of your head.. :-)

[por356c]

We should all thank God for JFP in PA. Goodness, I don't know how he has the patience for all of us!! He is, without question, the most knowledgeable person on this forum and also reminds us to use good common sense. Thanks Jeff.

[Starter986]

Originally Posted by por356c

We should all thank God for JFP in PA. Goodness, I don't know how he has the patience for all of us!! He is, without question, the most knowledgeable person on this forum and also reminds us to use good common sense. Thanks Jeff.

I'll second that. There are a few other people on here who share a plethora of solid information... and some common sense tips.