Page 20 - KCRPCA May 2017

In this picture below you will see the deep sump spacer plate, but you will also notice a spin on oil lter adapter. This allows you to use a fully ltering lter in place of the OEM canister lter. The OEM canister lter contains a bypass valve in it, and when it gets dirty, it will start bypassing oil around the lter instead of through it. You can have up to 30% of the oil not being ltered in the engine with the OEM system....not good! I recommend this conversion in all m96/m97 engines.
And then there is the elephant in the corner. The IMS bearing. Unfortunately the M97 engine does not allow removal of the bearing easily as with the M96 engine. They used a bearing that was larger than the hole in the engine, so it can not be extracted without a full engine rebuild. Below you can see the IMS ange removed, and the bearing inside the engine. While this updated bearing has proven to be incredibly reliable on the street (estimated 1% failure rate), the larger bearing is not designed for sustained high RPM loading, and they are known for failing on the track.
So the solution is to get as much lubrication into that bearing as possible, and we do that by removing the outer seal to allow as much splash lubrication as we can get. While lubrication is only part of the failure mode, this will greatly help to sustain the longevity of the bearing. This isamustdoifyoutracka997.1911or 987 Cayman/Boxster.
And of course we need some safety items as well. I haven’t gotten through all that yet, but we will be adding Sparco race seats, Schroth 6 point harnesses, re extinguisher mount, etc. I also installed the Tarett rollbar which is a multi piece unit. Everything went together there with a little modi cation to carpet sound deadening.
20
May / June 2017
- Karl