I don't have any real evidence, Bronson, but I would think that if Porsche thinks replacing the top end fixes it, then maybe the major changes from E/F to G are primarily to the top end itself. If that is the case (not saying it is), Porsche might just plan on doing the top end and then wait and see if it caused damage to the cylinders when they tear it down. If so, new engine.

If this really is a top end issue, it would be nice if they just issued a recall and did it while the engine isn't fubar. But they are Porsche, and who am I to argue?

 

Reading all these posts is upsetting. Think about it, owners of 14 went through the engine recall and some of our cars sat at the port for 6 months and now this. The right thing to do is buyback or replace engine to G with compensation. We might need another action group. Just something to think about.

 

or lemon law.

 

True, rebuildable is a nice option. However, PAG did not rebuild the above engine. They put on a couple of bandaids and added a dab of Neosporin.

Sad to say the customer doesn't know if this is a batch problem or is it endemic in the design.

 

Agree 100 percent

 

Mike. Thats an interesting question. I dont know the answer but I would suggest that the new head on the RS & G engines has redesigned oil passages which improve the oiling on the furthermost cylinders (3&6). Id also suggest there has been a change to finger rockers. I have heard but cannot substantiate there has been a change to the springs and the rings on the G engine also (my G engine is definitely using far less oil and after 6800km is yet to smoke on start up which would suggest redesigned rings). We know the G engine has a redesigned oil filer, larger filter neck and an upgraded oil pump but these may be more related to duty cycles (i.e. less duress on the components at higher nominal mid range oil pressure). The interesting thing would be to know if an E engine having a replacement G head also receives a new ECU program that increases the mid rpm oil pressure. My laymans logic would suspect with a redesigned oil passage in the head an increase in pressure may be required.

All of this is speculation. I think I would happily run my car with a redesigned head but I would rather a new engine if that was a possibility. Whatever "fixes" they applied to the F engine, Im a firm believer they did not address the root cause of the issue (oiling) so I would not be surprised by the end of summer to start having more of these appear on the database...

 

Distressed.

 

Mark, thanks for your insight. I want to believe that Porsche is on top of this and making replacement decisions based on good engineering analysis and not financial considerations. But it's frustrating to be in the dark about so many aspects of this issue and unfortunately no one who is really in the know at PAG or PCNA is talking to us about it.

 

Quote:
Originally Posted by Macca View Post
Great to hear you got the outcome you were looking for!

Out of 20 recorded examples there are no G engine failures, although its early days. In two weeks time I'll have 6 track days plus over 4000 fast road miles on the new G engine. So far very good.

4000 rpm in 5th gear under load registers 58/59 psi for those asking....

Post by fxz
Hi Macca and All

my F engine mid range oil pressure
without any service at porsche since Jan2015 delivery

looks higher than G engine you mention above

for reference my 2015 M.Y. F0 engine
5th gear manual mode , oil water temp 90 C (194 F)

at 4k rpm is 63 psi (4.4 bar)
at 3k rpm is 53 psi (3.7 bar)
at 2k rpm is 43 psi (3.0 bar)

 

Macca, don't know if you have this info in all your data you have collected so far, but my question is this. Of the engines that have been replaced, were any of these fitted with after market exhaust or any other additional add-ons? To the RL's out there who have had issue's with their engines, did you have any after market products added or removed? If so, has the dealership said anything?

 

Good question, Bronson.

 

Is there a statistic of the effected engines that are using stickier tires vs oem? As someone mentioned that owners who only street drive will probably not have an issue or will be delayed. Just wondering how affective the dry sump system and it's plumbing etc on the 991 gt3. The Z06 has a dry sump but it has issues on the track. Mike

 

Mine has sherkworks exhaust and dealer said nothing about it besides the fact that it sounds really good....

 

Kamal, this action group you are referring to was before my time of interest in this car. What exactly did you owners do and do you think it carried any weight?

 

Hey Bronson, Action group made a huge difference. I am sure there is a long thread out there about it. Macca and one other RL memebr from UK lead the action group. I wonder if they will make a use of the data being collected to help the E engine owners. Need to be pro active and get something started.