Small front crank seal leaking

[trahanm]

Ok, got my engine and trans back in 83 SC. Have it set up and it runs and sounds fine after a complete reseal, backdated exhaust, new clutch, transmission rebuild, etc, etc. In general, I am very pleased with how things came out.

Yesterday I had it running outside for about 20 minutes while I set the fuel mixture with a new CO tester I just purchased. After putting it back in the shop, I noticed some oil where it had been parked.

Sure enough, the small crank seal behind the belt pulley is leaking. It is a new Ehlring seal I put in as part of the reseal. The old one, which I am pretty sure was the original, was not or leaking.

Today, I took it apart. It seems to be leaking where the seal sits in the case, not around the crankshaft. When I removed the seal there was quite a lot of oil trapped between the seal and the oil supply ports for the rear bearing.

I have rebuilt a lot of German and Italian engines over the last 45 years, and never seen this before.

I have a new Porsche OEM seal on the way, and I guess I will use a non hardening sealer where the seal fits into the case.

Does anyone have experience with this.

Marc

[Funracer]

Replacing my front seal today. Did you end up putting Curil T or something similar on the outside of the seal? Did it work?

I have an 83SC as well. What CO tester did you buy?
Thanks

[john walker's workshop]

De-burr the bearing leading edge and especially the notch where you pry it out so the seal doesn't catch there and create a bump in front of the notch. Seen a lot of hammer marks in those over the years. You can almost push the seal in with your fingers, so I would be hesitant using a non-drying sealer.

[Funracer]

Just finished. Did some reading and ended up doing it the same as i did the rear seal. Dry outside and a bit of motor oil on the inside. Pressed in finger tight then tapped it in flush with large socket and rubber hammer.

Hardest thing about it was getting the old one out.

Thanks as always.

[proporsche]

Hi marc..you said it is Elring which is leaking? does it look like this(top of the pic) or it is all brown?

Ivan

generally the Elring is the company to go with,an excellent quality stuff..so just makes me wonder?