oil cooler seals

[Boydskyking]

I have a 69 912 that has the floating oil cooler . Does anyone know where the picture of this set up as for as where what go where and the part number for each seal.
I also traded for a electric ignition with not instruction. Where do the wires connect.There is a red and black one.
Thanks

[Christopher E]

Try the Porsche online catalogue: Porsche Original Parts Catalogue - Porsche Genuine Parts - Porsche Service - Dr. Ing. h.c. F. Porsche AG

Don't know which ignition unit you got but I fitted an Ignitor to my 031-distrubutor a while back. Red wire went to positive side of coil and black to negative side of coil.

[RichardM912]

Amazing - I just signed up a fewminutes ago and the first question I see is on a topic I happen to know something about, having had to replace the seals on my 69 912 oil cooler nine months ago.

There are two oil seals (called sealing rings - P/N 999 704 132 50 I think for the later cars) and six O-rings (P/N 997 701 142 40), two on each of the three studs/bolts. The two seals go in the recesses around the oil in/out pipes and the O-rings go one above and one below the seating surfaces. There are also steel washers involved.

Make sure that you fit all six O-rings. I had only owned my car a few months when it deposited all of its engine oil on my driveway. Previous assembler had used only four O-rings. This torqued the unit down at an angle, putting pressure on the oil seals, one of which split.

Check the part numbers with a Porsche dealer (or Pelican!).

[Boydskyking]

Thanks guys I really appreciate the info. I have located the parts manual and the parts and have a question? I have built a lot of engines in my career as a Aircraft and power plant mechanic including air cooled gas engines and turbines an it just doesn't look like this set up with all the seals etc will work , It looks like it will leak Has any of you guy done this deal with all the o rings and does it really work.

Also does any body know the torque on the small nuts

Thanks again

[Jaems]

They were designed that way for the 68 and 69. The earlier cases would crack after a while due to the vibrations and the oil cooler being so rigid at the bottom and tall. The later cooler also had a place to hold it at the top. If done right they will not leak.

[RichardM912]

As I mentioned, I did the job 9 months ago and - touch wood - no problems to date. There are only two seals. The so-called O-rings (six of them) are just to give a compliant attachment of the cooler to the engine, to overcome the cracking problem that Jaems mentions. As you tighten the three nuts the cooler body is brought closer to the engine and the two seals are compressed. They expand within the confines of the recesses, thus giving a seal around the two oil tubes (in and out).

I don't know the correct torque on the nuts. I just used the correct size spanner (wrench?, I am from Australia) - not a socket and bar - and did them up tight, but using only the leverage that the corrct spanner length can give. I acknowledge it would have been good to know a torque figure.

[Boydskyking]

Thanks guys for all your help. I will install the seals like the book. I was told to be real carfull on the studs as it is easy to mess up the cooler with overtouqueing the studs.

[Nemesis]

I know this is an old thread however, does anyone know where I can lay my hands on a complete hardware kit including all the needed seals, sleeves, rubber bushing, O rings etc to install my oil cooler, It is the later soft mount floating type discussed above.
Many Thanks
Chris JM

[matt demaria]

stoddard imported parts

[Nemesis]

Thanks Matt

[jonmossefin]

A seal is a device used to keep oil on one side, and dirt on the other. so better get a seal which has high quality standard not from cheap garage, because you are most likely repeat the job again. just a reminder folks!