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Well, I broke her! 2016gt3rs Valve spring failure

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Old 08-08-2020, 10:57 PM
  #31  
IORR
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Originally Posted by Fatbro
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?
any modifications to your motor?....exhaust, tuning?
Old 08-10-2020, 11:09 AM
  #32  
Fatbro
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Just exhaust. GMG
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Old 08-10-2020, 11:14 AM
  #33  
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Update:
Small end of valve stem broke off. Luckily, still in valve spring and not floating around in the engine. No apparent head damage or major piston damage.

Valve is surly bent, valve guide looks ok, but will be checked with a mic. Parts are being cleaned
New parts may be here tomorrow.









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Old 08-10-2020, 11:58 AM
  #34  
GrantG
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Thanks for update - glad it wasn't even worse than feared.
Old 08-10-2020, 03:59 PM
  #35  
TRAKCAR
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Just FYI, sold my 16RS with 40K, at 20K a cooling pipe broke and 19RS with 20K and new gearbox because it was leaking.
Thats it just replace spark plugs and belts every 6000 (track) miles.

Thanks for the info and pics
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Old 08-10-2020, 04:40 PM
  #36  
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Originally Posted by robmypro
I wonder how all the finger followers look? You should get pictures as the engine has decent miles on it.
+1 How do the FF's look? Any wear?
Old 08-10-2020, 05:23 PM
  #37  
Fatbro
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Valve stems. New vs old. Completely broke off the tip. Now we believe the valve let go and spring wadded up.
Old 08-10-2020, 05:26 PM
  #38  
Fatbro
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Originally Posted by Airbag997
+1 How do the FF's look? Any wear?
all look great. No wear and tear at all.
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Old 08-10-2020, 09:20 PM
  #39  
usrodeo4
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Originally Posted by Fatbro
Update:
Small end of valve stem broke off. Luckily, still in valve spring and not floating around in the engine. No apparent head damage or major piston damage.

Valve is surly bent, valve guide looks ok, but will be checked with a mic. Parts are being cleaned
New parts may be here tomorrow.








Best possible outcome...hope nothing else turns up and I tip my hat for your flatline response, you would have made a good engineer of fighter pilot....the word is Laconic
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Old 08-10-2020, 10:05 PM
  #40  
Fatbro
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Originally Posted by usrodeo4
Best possible outcome...hope nothing else turns up and I tip my hat for your flatline response, you would have made a good engineer of fighter pilot....the word is Laconic
haha. Short and sweet and to the point.
Old 08-11-2020, 12:20 AM
  #41  
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Originally Posted by Fatbro
all look great. No wear and tear at all.
Thanks for the confirmation. Porsche was 100% correct about the 991.1 RS engine. No FF issues.
Old 08-11-2020, 01:23 AM
  #42  
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Originally Posted by Fatbro
Update:
Small end of valve stem broke off. Luckily, still in valve spring and not floating around in the engine. No apparent head damage or major piston damage.

Valve is surly bent, valve guide looks ok, but will be checked with a mic. Parts are being cleaned
New parts may be here tomorrow.


Any thoughts on how the valve broke? could it have something to do with the carbon buildup common to most DI engines?
Old 08-11-2020, 02:16 AM
  #43  
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Originally Posted by dgoldenz
RS doesn't have 10-year engine warranty
Go legal - I wouldn't cut Porsche any slack on any 991.1 GT car engine. 31K miles is nothing - its a defective part, not wear and tear.
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Old 08-11-2020, 11:31 AM
  #44  
Fatbro
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Originally Posted by groundhog
Go legal - I wouldn't cut Porsche any slack on any 991.1 GT car engine. 31K miles is nothing - its a defective part, not wear and tear.
i have been thinking about this. Depending on the repair bill really. I'm not sure I want to waste valuable time and money going after them. Maybe just an email showing the issue will be a start.
Old 08-11-2020, 01:03 PM
  #45  
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Originally Posted by groundhog
Go legal - I wouldn't cut Porsche any slack on any 991.1 GT car engine. 31K miles is nothing - its a defective part, not wear and tear.
How do you "go legal" in this case? Is there a legal footing here? Isn't it on the owner at this point because its out of warranty - even if it "shouldn't" have failed this prematurely? I'm just playing devils advocate here.


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