EPS IMS Bearing Upgrade Kit

[Gelbster]

Thanks for sharing your thoughtful analysis.
Having chosen the roller bearing option, why EPS and not RND ?
Roller Bearing IMS Retrofit Kit – RND Engines

[wogin]

Originally Posted by Gelbster

Thanks for sharing your thoughtful analysis.
Having chosen the roller bearing option, why EPS and not RND ?
Roller Bearing IMS Retrofit Kit – RND Engines

Actually did compare those two bearings. Although the thrust loads on the roller bearing should be very low. The EPS bearing seemed to me to have a better way of controlling those thrust loads. On the EPS bearing the thrust loads are transferred between the outside of the External race and the retaining washer faces on either side of the bearing. This ensures the ends of the rollers will not be the primary wearing surface. In the RND bearing appears to be an off the shelf rollerbearing that is simply axial retained by rigidly connecting its internal race to the cover/flange. Thrust loads would be between the roller ends and the internal edges of the bearing race... effectively loading the off the shelf bearing in a way that it is not designed to be. .... while this may be technically acceptable if the thrust loads are low enough, I just didn’t want to risk it. EPS seemed like a better thought out design.

[dsallean]

Originally Posted by Gelbster

Thanks for sharing your thoughtful analysis.
Having chosen the roller bearing option, why EPS and not RND ?
Roller Bearing IMS Retrofit Kit – RND Engines

Gelbster I know your question was directed at Wogin and his detailed post but I will add that when I was considering replacement of my IMS I searched the interwebs and I read everything I could find and came to my own personal preference for the roller bearing option. I was leaning toward the EPS version but the oiling system modifications kept me from pulling the trigger. It just didn't compute to punch a hole. It just nagged at me. So when RND came out with theirs and no oiling system requirements I pretty much knew that was the way I was going to go.

I really was in no hurry to replace my dual row IMSB and it ultimately came out in excellent condition. The replacement was accelerated after my Indy said the IMS was toast and I needed an engine replacement. Turned out it was a variocam puking green O-ring bits and the plastic variocam pads were worn. It was time for a new clutch and DM flywheel anyway

Dave
2001S

[paulofto]

Originally Posted by dsallean

The replacement was accelerated after my Indy said the IMS was toast and I needed an engine replacement. Turned out it was a variocam puking green O-ring bits and the plastic variocam pads were worn. It was time for a new clutch and DM flywheel anyway

Remember rule #1 with any Boxster or 911 from 1997 to 2004. If anything is wrong with your car, I mean anything, it is the fault of a failing IMS bearing. Period.