Engine Leaks after Rebuild 1k+ mi

[GotaT]

Updated POST..

Ive finally been able to get photos of the Cam Tower Leak. Ive also run the car more and found a couple other Possible Problematic Areas. What are your thoughts?

***Recent Top End Rebuild (about 1000miles) New gaskets and Seals Everywhere, RSR Seals..

Photos Show:
1. Cam Tower to Head Leak which the oil runs along the cam tower to the front of the car and drips Right On the Exhaust.. Doesnt leak much, but Drips in the Worst spot. I pulled one of the cam covers and No oil appears to be coming from the Rocker shafts. Ive also got RSR seals and as a secondary precaution I used red RTV on the Outside of the Allen nuts holding the Rocker shafts in place.

2. Cylinder to Case, shows some seapage of Oil.. What are your thoughts on this. New Gasket rings were installed recently w/ the top end job. This kinda concerns me, is this a common "leak" after putting on a few miles? I only installed the New Seal/Ring, no use of sealant.

3. Oil Cooler -Drip of oil. Cant tell where this is coming from?? I just put this said to be good oil cooler on and am getting this one drop shown on the bottom.. Which drips onto the Exhaust as well. New seals were installed. (Disregard the CV axle Grease, Fixed boot recently)...
3 RESOLVED Think I've found this oil leak. Appears to be coming down from the Breather on Top of the Engine.. Easy enough...

[BlueSideUp]

Was it coming from the breather cover gasket or the breather hose?

[GotaT]

I am sure the Smaller Breather Hose. It was disconnected. Can I just Plug that off? Or use a Small Filter style Connection. For cleanlienss.

[favrok01]

from your last picture i know for a fact that that is from the thermostat or the oil pressure sensor.

it comes down the wire harness opening in the tin down past the starter down to that point.

[GotaT]

Favrok, Sounds Right to me. Easy enough Fix for that one. How about the Cylender to Case? and Cam tower to Heads.. Anyone?

Thanks!

[Groesbeck Hurricane]

Mitch,

I cannot remember the correct configuration and my books are still in boxes, but... When you put in the ...merde...

OK, I went and opened up some boxes...

When you tightened the rocker arm shafts, what torque did you use? Did you have access to a bar torque wrench/accuracy of your torque wrench in the low range?

The rocker arms can loosen up on their own and thus leak, this happened to my re-build in the first 3,000 miles. There is also a direction to putting in the rocker arm shafts. If I remember correctly!!! the short wall gets your larger allen head side. Please verify, I cannot find my re-build book nor my notes in these boxes...

[BURN-BROS]

You need some kind of sealant like curil T on the cylinder base gasket. I don't know how you will seal it up without removal of the cylinders.

[andrew15]

I second the use of Curil-T on the base gaskets- I think this is something recommended by Henry over at Supertec and in Waynes engine book. It would require the removal of the heads/ cam towers to fix, but you may be doing that anyway.

What sealant did you use on the head / cam tower surface?

Here's a picture of my base gaskets - the squeeze out of the Curil-T just wiped off with a q-tip.

Regards,
AM

[favrok01]

I really give it to you guys that go ahead and attempt this stuff. Just when i think i could maybe jump in and do it, BAM !!!!
you have to use chemical xyz on this part then turn this part to 7 pounds squared, do this part first then read it a lullaby in German. I have just been scared off trying to do this myself and again i have been shown i am not worthy.

[GotaT]

Curil T on the Cylinders to Case
Anything between Cylinder to Heads?
Anaerobic Sealant Between Heads and Cam Tower
RSR Seals on Rocker Shafts

Is this right?

When I pull it apart will it be necessary to get New Metal Seals between the Cylinders and Case? , and Anywhwere else for that matter?

[BURN-BROS]

There are 2 that I have seen used;

Loctite 574 flange sealant

Three Bond liquid gasket #1104 My personal favorite used on case halves and head to cam tower.


If you have a rocker arm bore/shaft that is leaking. Debur the bore, Lightly hone the bore, and or replace the rocker shaft. There is no reason to put RTV over something that typically does not leak if the area is within spec....plus its a PITA to clean all that crap out. It is uneccesary "insurance" and looks unproffesional. The most I would do would be RSR seals, but probably only on the offending shaft. Just my humble opinion and by no means not the law of all things Porsche.

[andrew15]

I second the Three Bond #1104 for the heads to cam tower (it that's what is leaking) - I don't think Pelican carries it, but you can order it from Supertec or pick it up at a local motorcycle shop.

Regards,
Andrew M

[GotaT]

Anything Between Cylinder to Heads??

Heres a pic of the Permatex Anaerobic Sealant application I used for the Cam towers, couldnt find the loctite brand at the time, so said the same thing. Just didnt seem to seal.. However I think I should have applied as One continuous Bead... go figure, how'd the sealant know?!

[andrew15]

There is no sealant between heads and cylinders.
->69, there are individual cylinder head gaskets - installed dry
70-> There are CE rings that act as a seal - also installed dry
Some cylinders like later the 3.2L 95mm and my 92mm RSRs have no gasket at all and rely on a slight bevel to the surfaces to seal.

Regards,
Andrew M

[BURN-BROS]

Yup, what Andrew said.

[andrew15]

Hey Aaron -
A little OT, but I've got one of your rotors in a Supertec twinplug distributor - thanks for all you effort on that project, it's working out great!

AM

[john walker's workshop]

you actually did that with the engine in the car?????
that thick application of anaerobic sealant can cause a problem. it sometimes sets up before it all squeezes out. then you have a thick crust between the parts, and the parts may not be in proper alignment because of it. read case halves and leaking #8 o-ring for instance. 574 does that.

[Determined]

Good information, thanks everyone.

Alex

[wyawn]

For sealing the cam tower, you definitely don't want to use anything that is thick enough to be applied as a "bead". The loctite 574 is very thin. Which means it squeezes out very easy. Enough of it stays behind to fill any imperfections, scratches etc. But you pretty much need metal to metal contact here, since any movement here would have a serious effect on your valve lash adjustment.

[GotaT]

So, Is it supposed to be applied as one Single Solide Bead of sealeant?
If so, Where should the Bead run around? Any photos or paint edited photos... I couldnt find it in waynes book.