Another IMS bearing thread

[BobRickel]

My local indy mechanic has been working on these cars for years. His fix is the EPS fix shown in this video:
He charges $1400 to do this on cars with Tiptronic, which includes all parts and includes changing out the AOS, belt, and plugs.

[Jake Raby]

Originally Posted by BobRickel

My local indy mechanic has been working on these cars for years. His fix is to pull the engine, center punch a hole from the front oil pressured side of the IMS and put in a roller bearing with no seals. The oil comes through the IMS shaft from the front pressurized side and flows through the roller bearing and out the rear side thus constantly lubricating the bearing with pressurized oil. He charges $1400 to do this on cars with Tiptronic, which includes all parts

The part he is center punching is the only thing holding the oil pump drive key from falling into the IMS shaft during operation. I see these failures occur without the assistance of a center punch.

It helps to understand the anatomy of the patient before performing the surgical procedure.

[BobRickel]

Originally Posted by Jake Raby

The part he is center punching is the only thing holding the oil pump drive key from falling into the IMS shaft during operation. I see these failures occur without the assistance of a center punch.

It helps to understand the anatomy of the patient before performing the surgical procedure.

My Indy mechanic is from Germany where he was Porsche trained. He was the lead mechanic for Brumos Porsche in Jacksonville for 24 years and had his hand in every engine that was built and used there for all of those years.

[Jake Raby]

Originally Posted by BobRickel

My Indy mechanic is from Germany where he was Porsche trained. He was the lead mechanic for Brumos Porsche in Jacksonville for 24 years and had his hand in every engine that was built and used there for all of those years.

Has he experienced an M96 engine that failed due to the oil pump hex key falling into the IMS tube?

To fully understnd the anatomy requires cutting open components for cross sectional views.

[thom4782]

Originally Posted by BobRickel

My Indy mechanic is from Germany where he was Porsche trained. He was the lead mechanic for Brumos Porsche in Jacksonville for 24 years and had his hand in every engine that was built and used there for all of those years.

Experience helps, but it isn't a guarantee. For example, consider the years of experience the Porsche team had when they designed the IMS in the first place.

[BobRickel]

Originally Posted by thom4782

Experience helps, but it isn't a guarantee. For example, consider the years of experience the Porsche team had when they designed the IMS in the first place.

Agreed. , although according to my Porsche mechanic friend there is a lot of pressure and decisions being made by bean counters. That is one of the reasons he left corporate after 24 years.

[Jamesp]

Originally Posted by BobRickel

My local indy mechanic has been working on these cars for years. His fix is to pull the engine, center punch a hole from the front oil pressured side of the IMS and put in a roller bearing with no seals. The oil comes through the IMS shaft from the front pressurized side and flows through the roller bearing and out the rear side thus constantly lubricating the bearing with pressurized oil. He charges $1400 to do this on cars with Tiptronic, which includes all parts

This looks eerily similar to post 192 in this thread, which seems to have some fatal, if yet undefined flaw. Looks good to me, but I'll punch holes in an IMS shaft with very little provocation. Careful with that oil pressure however!

[Smallblock454]

Originally Posted by BobRickel

My local indy mechanic has been working on these cars for years. His fix is the EPS fix shown in this video:
He charges $1400 to do this on cars with Tiptronic, which includes all parts and includes changing out the AOS, belt, and plugs.

Why not drilling a small hole along the groove of the allen drive? All metal debree can be removed. The IMS tube is full accessible, so you remove debree. Oil pump is also full accessible. The hole must not be that big.

The downside of the idea in general: you loose oil pressure for other engine components.

Regards, Markus

[JFP in PA]

Originally Posted by Smallblock454

Why not drilling a small hole along the groove of the allen drive? All metal debree can be removed. The IMS tube is full accessible, so you remove debree. Oil pump is also full accessible. The hole must not be that big.

The downside of the idea in general: you loose oil pressure for other engine components.

Regards, Markus

And you flood the IMS shaft, which also may not be such a good idea.......

[jaykay]

Originally Posted by Smallblock454

Why not drilling a small hole along the groove of the allen drive? All metal debree can be removed. The IMS tube is full accessible, so you remove debree. Oil pump is also full accessible. The hole must not be that big.

The downside of the idea in general: you loose oil pressure for other engine components.

Regards, Markus

How are these roller bearing installations handling thrust loads ...if there are any. Do any have this installed? I hope oil film is not being relied upon.

Personally, I would not be at all on board with putting a groove down the length of my oil pump hex drive. A centre hole may work if you are a gambling man. That section looks too small to begin with an now one has introduced notch sensitivity that is off the scale for torsion.....imho