Vendetta, I sorry to laugh at your expense but I got a chuckle out of "reporting live from the side of the road"

rofl

 

Basically, it's an aluminum nipple (bung) that is press fit (with some kind of "glue") into the aluminum block. After about 2,535,483 heat cycles..it seems to come loose...
Basically, the fix is to clean all the glue off, press the nipple back in and weld it in place.

 

Porsche, epoxy is no substitute. ™

 

I called and had a few minutes of discussion with Ellen. She is legit as I inquired of her firm’s involvement. Doses she represent PCNA or?? From what I can tell, there's been an accident involving a Porsche which had a catastrophic coolant loss on public road. This coolant lost caused possibly several cars too crash too. My basic Business Law class of tells me that Porsche driver could be liable to legal action against them. If you've had a failure- please do it for the safety of the public and yourself / loved ones that might be in the car and email / call Ellen.

Thank you

 

I was just thinking about this today. Vandetta, any update?

 

Hi...posted this to rennlist as well...

If you read he following...
http://www-odi.nhtsa.dot.gov/acms/cs...009-57948P.pdf
... you will read that Porsche had supplier improve manufacturing process (as of "fall 2007"). From the data (see analysis and links below), it appears the "improved" parts have not failed (latest date of manufacture failure was 9/20/2007, actually the "Warranty start date"). This was due to their own analysis of failed parts that showed the problem was due to lack of uniform application of the epoxy. On my own failure, I could see this was also the case. If these parts had been hand assembled then the failures would likely have never occurred, but they were manufactured by automated process. The document also talks about the improvement to ensure uniform application of the epoxy.

While we all may believe the design approach was flawed (note, epoxy is used in aircraft manufacturing) as a fellow engineer, I am sure the design, assuming proper application, was designed with higher tolerances (pressure, temperature, age, etc) than ever expected (likely 2X). Porsche tends to over engineer.

Now on to the analysis of the data, see all the data in the Excel files in this link, also some other interesting files, videos, diagrams, etc.

http://www-odi.nhtsa.dot.gov/acms/cs...09&docType=INV

The number of cars PCNA has repaired is 353 out of 25629 or only 1.62% failure rate. Now if we assume many, say 2 times as many folks went to independents or did preventative, then failure rate is about 5%.

Also of interest is average age at failure is 4.1 years and many (around 30) failed in less than 1 year.

Final note, investigation is still in "open" status