Printable Version of Topic

Posted by: two914-6s May 14 2020, 06:36 AM

I have an awesome 2.0 S spec engine in my original 914 six. Had it rebuilt a couple years ago and it's a joy to drive. But it's leaking oil and I'm going to have to rename it the SS Valdez. I have COVID-19 psychosis and I've been cleaning the underside of my car with a toothbrush. I'm looking for some new valve covers so it won't leak.

Thanks
Dave

Posted by: gereed75 May 14 2020, 07:38 AM

There are two fixes with your originals - mill them flat using a sheet of 120 sand paper taped down to a flat surface (granite counter top) and install them with squishy silicone gaskets

No leaky

Posted by: mepstein May 14 2020, 07:46 AM

The silicone gaskets take very little pressure. People usually overtighten.

Posted by: xsurfer May 14 2020, 07:51 AM

Are the existing valve covers milled to enable valve adjustment without lifting engine? If not have machine shop straighten

Posted by: eric9144 May 14 2020, 08:22 AM

QUOTE(two914-6s @ May 14 2020, 05:36 AM)

Posted by: roblav1 May 14 2020, 10:11 AM

6 bolt lowers always leak. Mill them or do the flat sandpaper thing, which worked for mine.

Comment assumed a real 2.0 S engine. Regardless, use sandpaper.

Posted by: Retroracer May 14 2020, 10:54 AM

Also responded to the OP post on FB, but to add in a few comments here:

- flatness is key; either turbo or original magnesium. Plate glass / sandpaper / grinding paste - whatever it takes. I was lucky enough to be able to pick from a selection of lower covers (the worst culprit for leaks) and select two that were almost perfect to begin with; which meant the minimum of material removed to get the sealing surface flat
- turbo lowers will need to have some fins machined down for suspension clearance; maybe a bit more if you want check valve clearances with the engine in the car
- the orange silicone gaskets were the last element of getting my covers leak free. Read the instructions that come with on torque settings, as if you get too aggressive they squish out and don't seal well

also - nice car!!

- Tony

Posted by: roblav1 May 14 2020, 04:25 PM

Coat each aluminum surface with Hylomar Blue. We use that on gasketless transaxles like Hewland MK series snd LD200. I used it all over my newly built 930 engine.

Posted by: porschetub May 17 2020, 03:42 PM

QUOTE(roblav1 @ May 15 2020, 10:25 AM)