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4 hours ago, Schnell Gelb said:

In those 2 sentences you have proof of the value of subscribing to Renntech.

Any other Porsche Forum would have pages of banter and dickering before you would find such a gem - if at all.

I made a mistake installing my first RMS and confessed my sins here.

I had to redo using an improved home-brew tool.Fortunately that was before I installed the trans. Set  at the correct depth,the new seal does not leak a drop.

I am grateful to Renntech Forum members who took the time to specify the different depth for the different seal.

Thanks for your contribution, I'm subscribed to a few forums actually and I do appreciate the serious approach taken here on Renntech. My trans is still down and fortunatelyI have a spare seal. Would you or anyone mind sharing the correct depth?

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On 13/04/2014 at 8:59 PM, JFP in PA said:

13MM from the flywheel mating face of the crankshaft

Just saw this from JFP after rereading this thread, I have another seal and will pull the one I installed yesterday today. I've made something to measure the depth and plan to use the same tool, it will take time measuring, tightening all over, but perhaps a small price to pay to get things done properly. 


I'm thinking I may be able to add washers at the long bolt end to compensate for the few mm's the seal went in beyond the 13mm point. 

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Ok so I just pulled the clutch flywheel etc again, it turned out that I didn't tighten the tool enough so the seal was pushed in about 12mm, so I decided to tighten all the way and the seal depth was exactly 13mm from the face of the shaft where the flywheel attaches to down to the seal. So according to all the tips I've gotten so far this should work perfectly as this tool drives the seal to 13mm on the dot. I will test and give a feedback after a period of use.

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  • 1 year later...
On 10/21/2017 at 6:15 PM, JFP in PA said:

The tool you used is designed for the Viton RMS seal, not the later PTFE seal, and will install the later seal at the incorrect depth.  Currently, only Porsche makes the correct tool for the PTFE seal, or you need to make your own.


Possible to just make a 1mm shim for the tool to make it stop at 13mm instead of 14mm? 

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20 minutes ago, Russianman92 said:


Possible to just make a 1mm shim for the tool to make it stop at 13mm instead of 14mm? 

No, the PTFE seals goes deeper, not shallower.

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1 minute ago, Russianman92 said:


Ah. Touche' thought it was the other way around for some reason. 


Should probably just do the PVC cap trick huh? Can't justify $500 for a tool to use once




PVC pipe has become the substitute for the now $600+ factory tool, which while a true work of engineering art, is hard for any DIY to justify.

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