Flywheel seal. Advice appreciated

[flat6s]

PP brothers ,
1980 911 SC Targa 130 k mile. I am 25 year owner

My friend is my fully capable p car wrench.

My story goes like this: Pull engine for head stud work. And oil swith. Oil switch leaked, pulled engine again to repair, decided to replace flywheel seal this time as preventive maintenance. New seal leaked from start up and got worse real quick. Now engine is on floor again ready for new seal......Monday afternoon.

I have read on this site a lot .... Let me review what i think and check me if you would

First seal was Kraco from PP. pulled it out yesterday. Seal looks new, shaft looks new. Old seal did not leak ... This one did.

Received new seal from PP yesterday. Has the orange lips.... Going in on Monday pm
I say lube the inside lips of the seal.... And install 1or 2 mm recessed, so to seal on a new part of shaft.. No plans to lubricate with Curil T ..... Using factory tool.

Sound advice and opinions are sincerely apprciated

Joe

[E Sully]

Install it outside lip dry, slightly raised, not recessed.

[cmcfaul]

with it not at least flush, it wont be in far enough to seal the notch...there will be a gap there.

Chris
73 911 E

[jhg41977]

Check the surface for any imperfections before installing. If any are found, remove them using very fine paper and take care to not remove more than absolutely necessary. Also, be sure you clean up the area afterwards and before installing the new seal. I lightly coat the seal with motor oil on the crankshaft and case sides. I suppose you could coat the case rather than the seal if you feel better about that. You don't need much, just enough to help it slide in and not tear the rubber. The last time I installed one I placed a wooden board across it and carefully tapped the board using a framing hammer. Check often that it is going in straight. If you have to remove it and start again, use a new seal. Mine was in for 26k, no leaks at all. Pulled the engine to do a top end. I now have a factory tool for the install this time.

[Mitch1]

I used the tool also. I used just a little oil on the the inside diameter of the seal. I left the outside dry and used lacquer thinner and alcohol to clean the case boss. If you look closely you'll see a slight chamfer on the case halves. I installed mine flush with the edge of the chamfer.

[flat6s]

Thanks for the advice. Sounds like we are all pretty close to the same install method. I am praying that it is leak free this time. I cannot imagine pulling the engine again. I will keep this post going until the seal is in and i can report the results.
Joe

[flat6s]

Installed the new seal yesterday. Used the seal with the orange lip. Oiled the lip. Lightly oiled the outside of seal. Inserted flush with factory tool. This is our third attempt. After a 20 mile drive today... No leaks. Keeping my fingers crossed, but so far..so good. Installed the other seals the exact same way. I cannot figure out what went wrong the previous two times. The good news is that after removing the engine 3 times in rapid succession, I now can remove the engine with one hand and my eyes closed ! Thanks for the sound advice ..l i love PP forums