991 gt3 engine misfiring / letters
06-02-2016, 11:00 AM
#61
Three Wheelin'
No one has seen a PET diagram to confirm a change. But....hopefully common sense engineering would have them have the latest DLC coating, run higher oil pressures, etc. What isn't known is whether the oiling is changed. Please PM Macca for the latest. He stays on top of it.
06-06-2016, 11:32 AM
#62
Advanced
Thread Starter
UPDATE:
service advisor called, the engine has significant wear on both sides and throughout the engine and he suggests engine replacement and, despite this, PAG is still busting his ***** about more info and pix. I called porsche customer commitment center for help resolving this matter...more to come, btw SA states approximately 10 days to get new engine once all is approved by PAG.
service advisor called, the engine has significant wear on both sides and throughout the engine and he suggests engine replacement and, despite this, PAG is still busting his ***** about more info and pix. I called porsche customer commitment center for help resolving this matter...more to come, btw SA states approximately 10 days to get new engine once all is approved by PAG.
06-06-2016, 01:00 PM
#63
Three Wheelin'
Keep us updated. It is sad to say that '14 and '15 owners of this wonderful GT car are hoping for a complete engine failure!?!?!?!?!??! This can't be what Porsche wants. I still want to keep my car for the long-term, and I have been following all of this closely, through the Ups and Downs of everyone affected. Nothing I have seen or heard has kept me from the track with my '15 F engine. It is great to have RL members like Macca to keep a close eye on the overall issue. And it is nice to know that this car has many of it's owners thrashing it on the track. If your dealer is successful, please give us the scoop on what was the tipping point. I believe anyone with scored cylinders gets a new engine, yet, the borescope is not part of the initial protocol, which seems to me, a mistake. The lost metal has to go somewhere.
06-06-2016, 01:14 PM
#64
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Could someone remind me where things stand on replacement of '15 F engines? I replaced coils and plugs at my own expense, have done fluid changes more often than Porsche recommends, have done the recommended track maintenance, and the car is running strong with over 19K total miles and over 6K track miles.
06-08-2016, 04:26 PM
#67
Rennlist Member
Congratulations. You should be pretty much worry free from here.
06-08-2016, 08:16 PM
#69
Race Director
06-08-2016, 09:44 PM
#71
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06-09-2016, 09:49 AM
#72
Instructor
This engine issue has me concerned. I currently have a '13 C4S and have been shopping for a pre owned GT3. During this time I have been closely following the problems being reported with the gt3 engines. Being anxious about an engine is one of the main reasons I sold my E90 M3 with 39k miles. I am extremely interested in this car but I want to make sure I am not making a huge mistake based on what I am reading in these threads. There is such a large market of available, low mileage, gt3s available. I'd very much appreciate every one's opinions before I jump into this purchase.
Op, sorry for high jacking. Congrats on the engine.
Thanks,
Jason
Op, sorry for high jacking. Congrats on the engine.
Thanks,
Jason
06-09-2016, 10:38 AM
#73
Jason. You may have dodged the E90M rod bearing issue but the GT3 motor issue appears to have a higher probability of occurrence. It is reported that the 2014 "E" and 2015 "F" have had issues. If I were in the market, I would only consider the 2016 "G".
06-09-2016, 11:12 AM
#74
Race Director
I think the data is starting to show that the E engines are the main problem, and that something (improved coating) was done to the F engines that dramatically reduced/eliminated the issue. The G engines take the fix a step further, with redesigned heads to improve top end oiling.
I would have expected by now to see a lot more F engine failures, and so far that just hasn't happened. The new cases seem to still be overwhelmingly E engines.
I have no inside info, but logically Porsche saw the wear on the initial E engines that failed and improved the coating immediately on the F engines. It took a little longer to redesign and test the modified heads, which explains them showing up on the G's. I would guess that the extra top end oiling is a precaution.
I am having my oil tested right now, so I will post the results when I get them. But I am not expecting anything unusual.
I would have expected by now to see a lot more F engine failures, and so far that just hasn't happened. The new cases seem to still be overwhelmingly E engines.
I have no inside info, but logically Porsche saw the wear on the initial E engines that failed and improved the coating immediately on the F engines. It took a little longer to redesign and test the modified heads, which explains them showing up on the G's. I would guess that the extra top end oiling is a precaution.
I am having my oil tested right now, so I will post the results when I get them. But I am not expecting anything unusual.
06-09-2016, 11:15 AM
#75
Race Director
Could someone remind me where things stand on replacement of '15 F engines? I replaced coils and plugs at my own expense, have done fluid changes more often than Porsche recommends, have done the recommended track maintenance, and the car is running strong with over 19K total miles and over 6K track miles.