IMS show-n-tell

[Walter White]

Originally Posted by Jamesp

I ran a bead of 5900 case sealant around the outboard edge of the seal before I installed mine as a little "belt and suspenders" for a seal area renowned for leaking.

It may be a good thing you did. That Nachi seal has a small notch molded into the outer sealing area for ventilation.

[Jamesp]

Originally Posted by Walter White

It may be a good thing you did. That Nachi seal has a small notch molded into the outer sealing area for ventilation.

Do you have a picture? The NSE is a full seal.

[Walter White]

I looked but I could not find a seal I have not destroyed. I will get a pic next time I have one I will get a pic.
I think I saw two notches on the outboard side of the seal at the perimeter.
I thought they were just part of the molding process and not intended for anything. Then I saw the details on this page, near the bottom

6204-2NSE Nachi Bearing 20x47x14 Sealed C3 Japan Ball Bearings:Nachi-Bearings

"Breathing mechanism (on seal OD)".

[j.fro]

I have earned my IMS merit badge! Got the car together yesterday, but needed 3 litres of Delvac 75W-90 to fill the trans. Filled up the trans and got it running this evening. Since I had to pull the chain tensioners, there was some racket on start-up, but that quieted down right away and the car runs smooth. I replaced the clutch with a Sachs unit. The clutch pedal is nice and light, and with the new trans oil and new engine mounts, shifting is like butter. A while back we had an Infinit G35 6MT coupe, and now my 996 shifts as well as that car did.
All in, replaced :
the clutch, pressure plate, and throw out bearing
IMS with LNE dual row IMS kit
Rms with Pelican PTFE RMS
Engine mounts with new stock units
Flushed clutch with Ate gold