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Funny story....Just 3 weeks ago I responded to someone on a FB thread about the 991.1 gt3rs. They were asking how reliable it was. I went on about how I drive my cars, track my cars and enjoy them. That my 2016 has 31,500 miles on it with now issues. Well that bit me in the ***!! Three days later I turn left at a stop light, with no warning the motor shuts down and I get warnings about lost compression and do not drive. It will not start. I tow it to the shop. Video shows a piston slap in cylinder #4 and no compression. We pull the motor and open her up. Broken valve spring in #4.
No warning, no issues up until this point. And of coarse out of warranty and Porsche won't cover it. So the rebuild has begun!!! Anyone else break the bulletproof 4.0 yet? Do I get an award?
I spent 40 years working for a steel company. One of my favorite failure investigations was for a jet engine manufacturer. A rotating part of an engine failed a maintenance inspection and I was tasked with tracing the manufacturing history up to the sale of the product. The material in question was produced by a Vacuum Melt ESR, Electro Slag Remelt, process. It is a time consuming and expensive process. After going through the melt records, extensive documentation, there were no deviations from the mandated procedures. I presented the data and all of the melt charts to our customer for their evaluation. They came back to us a few days later and agreed we had followed the guaranteed process to the letter. There was no financial burden on our part. There is no perfect melt process nor a perfect part manufacturing process for a mass produced item.
Cost is ever evolving. We have new parts on the way. Depends on if there is any other damage which we do not think there is, machine shop etc. If I had to guess 5-10K.
Well glad it is getting fixed. Hopefully it's under $5-10k. While expensive, doing an engine out on a 997 to do preventative maintenance like pinning coolant lines is going to be $5k by the time you do everything else you should do, so it's reasonable I guess given original MSRP of the car and what other cars could cost to repair.
Cost is ever evolving. We have new parts on the way. Depends on if there is any other damage which we do not think there is, machine shop etc. If I had to guess 5-10K.
Sorry for the issue, but from what you are saying, the fact that there was no real damage to the bore/block and can be remedied with parts is a great outcome. Valve springs breaking usually have catastrophic results. Valve springs do go bad and doesn't appear to be a systematic issue with Porsche valve springs across many years/platforms. Glad it's repairable.
Sorry to hear about your problem. Hope the cost stays within the quoted range. I'll assume whoever does the work will account for all of the pieces. A friend had a similar problem and and a small piece went unaccounted. That piece ended up in the oil pump gear and necessitated rebuild #2 20 minutes into his first track day with the new motor.
I would argue that it is covered by the 10 year-120k mile warranty. Look at the letter you got from Porsche. The letter I got from Porsche says the engine is covered...it does not specify just the finger follower issue.
08-06-2020, 05:41 PM
Well, I broke her! 2016gt3rs Valve spring failure
