Dual Row IMS bearing installation question

[johnmh]

I have watched many videos about installing a single row IMS bearing and understand the big circlip goes in last when the bearing is fully seated. Pretty clear.

 

What is the story for my double row bearing?  The bearing came out with the skinny internal retainer ring attached to it.  I assume I do not reuse the old retainer ring with the LN Engineering kit (it will arrive tomorrow via Fed Ex).  Does the replacement bearing with retainer ring just slip in and seat itself when you tap the bearing in place or is there a trick to it?  Does the retainer ring get installed inside the shaft first and the bearing tapped into place later?  

 

Thanks for any insight you can share.

[JFP in PA]

7 hours ago, johnmh said:

I have watched many videos about installing a single rowIMS bearing and understand the big circlip goes in last when the bearing is fully seated. Pretty clear.

 

What is the story for my double row bearing?  The bearing came out with the skinny internal retainer ring attached to it.  I assume I do not reuse the old retainer ring with the LN Engineering kit (it will arrive tomorrow via Fed Ex).  Does the replacement bearing with retainer ring just slip in and seat itself when you tap the bearing in place or is there a trick to it?  Does the retainer ring get installed inside the shaft first and the bearing tapped into place later?  

 

Thanks for any insight you can share.

 

Easy one to answer:  the LN replacement for the IMS will come with a large Spiro lock, which is installed after the new bearing goes in to retain it.  If you check LN's website, you will see the Spiro lock in the photos  Dual row IMS kit

 

 

[johnmh]

Thanks.  Seems easy enough.  Managed to get my RMS installed, tomorrow is the IMS bearing, the variocam chain buffers and the clutch.  Slowly, slowly, it is coming together.  

[dporto]

Just an FYI...The spirolock can be a challenge to install, don't get frustrated/give up - just when you think "how the *&$@$#%$ does this thing go in"... it will go in  It's a little surprising that you didn't take the original one out before you pulled the bearing though...It must have made it somewhat difficult...The vario-cam pads are ridiculously easy/quick to do. I think the most important/time consuming  part of dealing with them is getting all the mating surfaces of the heads and cam covers properly cleaned/prep'd/sealed. Also make sure you get the cams properly timed once you get everything put back together. Good Luck

[JFP in PA]

34 minutes ago, dporto said:

Just an FYI...The spirolock can be a challenge to install, don't get frustrated/give up - just when you think "how the *&$@$#%$ does this thing go in"... it will go in  It's a little surprising that you didn't take the original one out before you pulled the bearing though...It must have made it somewhat difficult...The vario-cam pads are ridiculously easy/quick to do. I think the most important/time consuming  part of dealing with them is getting all the mating surfaces of the heads and cam covers properly cleaned/prep'd/sealed. Also make sure you get the cams properly timed once you get everything put back together. Good Luck

 

On the dual row bearings, the original retainer is a wire which is actually under the outer race, and cannot even be seen during extraction.  You simply pull on the bearing hard enough to break it, then remove the bearing.

 

[dporto]

Ah...That makes so much more sense. Mine already had a LN Classic dual row bearing installed and hence the spiro-lock... I can't imagine trying to pull the bearing past the spiro-lock...

[smak]

I just had mine replaced with the roller type.  100miles on the car and the double roll bearing seems to be perfectly fine.   

[dporto]

With only 100 miles, it better be fine!!!  Check back in when you hit 20 - 30k ...