991.1 GT3 engine questions - E, F & G. - Page 1 - Porsche General (2024)

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Hi all,

I've been looking at a 2014 Gen 1 991 GT3 at a Porsche Exeter.

I've read a lot about the early engine woes but this one has had a replacement and has the 100,000 miles engine warranty.

The car is an early one and I've just found out the replacement engine is an E version.

When I looked at a car at a specialist dealer last month he was very keen to state that his car for sale had the F engine which he said was much better than the E. He claimed that many people who had the E replacement usually required another one.

So, is the E engine to be avoided?

Thanks in advance,

SR

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Porsche911R said:

I would only want a G engine myself, but it all depends on price and how long you plan to own it for.

So what are the issues with the E and F? I get that the G is obviously a later version but are the former ones really that much of an issue?

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It has a 100k warranty which I guess will give you a replacement engine should the worst happen......so...

Buy the car and if the engine blows up then you will get a better replacement engine (a later revision engine) - so its a win!

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v8ksn said:

Ha ha, fair point! :-)

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if you want to make sure of the version, just look on the VIN plate.

Has anyone in the UK actually been given the 100k warranty in writing?

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OP you should be able to negotiate a huge warranty on this car through the OPC as part of the deal. Job jobbed.

Gen 1s are in reality as good as the gen 2s despite what many armchair internet 'experts' would claim.

Great value atm imo.

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I've just posted this on another thread but equally of use here, short version is that an F or early G engine isn't necessarily better than an E1 engine. No one wants an E0 though, these were all replaced.

You can tell by looking at the stickers on the door jamb or the bootlid.

My .1 CS has an E1 engine which was replaced by the dealer before delivery. I'm actually not at all worried by the engine issue. Partly because of the new warranty but also because of the explanation that Porsche gave along with the announcement of this as to why the problems were happening.

I gave the details to a family member who has a background in material science and engineering and they agreed that with the issue being related to the size, number and distribution of inclusions in the followers being somewhat random it is entirely possible that an early engine could last longer than an F or an early G.

There are a number of E1 owners happily taking advantage of our 9k rev ranges. My car has done 11k some have done many multiples of this.

I'm not planning on selling mine for many years, if it lets go the warranty is in place. People being advised to only buy a "G" engine,be aware there isn't just one G spec. You could have an early one and it could fail. The problem is you don't know if the G spec you have is the final one unless its after the COG announcement.

As ever with PH this thread is full of misinformation and feelings. Do you own research in a place other than this forum on all things is my moto.

Regards
Fred

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Thanks Fred, there is plenty of scaremongering around I agree. My old 997 C2S was meant to blow up within minutes of owning it according to some, 30,000 miles later and it never missed a beat.

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Shrubrocketeer said:

Thanks Fred, there is plenty of scaremongering around I agree. My old 997 C2S was meant to blow up within minutes of owning it according to some, 30,000 miles later and it never missed a beat.

30k miles is nothing most do that in less than 3 years , it's well know these will bore score.

I don't know many people with Porkers personally, but 2 I know of had blown engines in cars from that era a 911 and a Boxster.
So a 100 % record, it's not " scaremongering" is a design flaw in the engines.

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Porsche911R said:

So you only know 2 owners of these cars but because they both had issues you imply that 100% of these cars will have engine issues.

You really did miss a golden opportunity to say nothing at all here fella.

I've noticed its a strength of yours.

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Porsche911R said:

In your first reply you said you'd only have a G engine. Do you know the issues with the E and F?

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FredBasset said:

can you read ? I said I only know 2 people who own cars in this era and both had engine issues, that's 100% of the people I know with these cars !

I did not say 100% of these cars, I said a 100% of the people I knew !

Normally it's hard to find real people wit hissues as the internet shows up faults bigger than they really are, but for me to know 2 people with engine issues it's quite major, lets not even talk about the ISM failed design which was a basic flawed design.

Edited by Porsche911R on Thursday 11th January 09:08

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Shrubrocketeer said:

In your first reply you said you'd only have a G engine. Do you know the issues with the E and F?

I guess Porsche make many changes to this engine and the 1st was of course major and was a full recall.
E engine were still blowing up on track, some cars have had 4 engines , some use loads of oil etc etc

the newer issues was the lifters score so the cams cause a misfire.

Porsche are not going to recall 3000 cars again so they stated if your car gets a misfire you can have a new one.

So to me that's reads it's not if it's when !!!

it's ok people saying their cars are ok with 11k on, it's going to take a while for that part to wear but Porsche will offer a 10 year warranty on it.

I guess they hope not all 3000 cars will get to that engine wear point over a full recall in the warranty period, so the 10 year warranty is a move which saves them ££££ over another 3000 new engines.

Again it's all pure speculation as only Porsche know all the issues with that engine and must have changed many things on it over all as the R and 991 RS have it all be it some form of G unit.

As far as I see it the E is risky as ****the F will at some point misfire, but we can only guess as Porsche won't tell so you have to make a massive generalization which seems over negative.

hence I said I would still buy one if the price was right (not that I have ever wanted that model) but I would not own one over 7 years old myself.

Bit like the 3rd gear which is spot welded on some of the GT4 and some 718 and 981's !! it will pop if you use it hard :-( it's not splined like it should be !
another reason why I let mine go, I wanted to mod it to 435 bhp but with a faulty design flaw in the gear box it's a risky move to touch the cars.

I am not saying any of this is fact, as one can only go by Rennlist reports as they are on top of it more than most, Porsche really should issues more info imo to stop people guessing.

Edited by Porsche911R on Thursday 11th January 09:31

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Porsche911R said:

the newer issues was the lifters score so the cams cause a misfire.

Can you explain how a lifter scoring impacts the cam, which in turn causes a misfire?

Porsche911R said:

Bit like the 3rd gear which is spot welded on some of the GT4 and some 718 and 981's !!

Are you genuinely saying that the gear is not held on a splined shaft?

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Porsche911R said:

2015 my GT3RS were fitted with the F engine.

2016 my GT3RS had the G engine.

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fergus said:

I am not an engine expert or have looked into the 991 .1 GT3 engine problem that much, it's not a car which interests me and I know very little about engines.

there are 20 odd threads on Rennlist 100's of pages long, it's best to have a read over there and ask questions, but most come up blank but plenty failures.

yes it seems the 3rd gear was spot welded on some cars ! it goes pop and you have no 3rd gear drive ! early cars were on a splined shaft, so I think my OLD GT4 would have been ok anyway.

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Porsche911R said:

there are 20 odd threads on Rennlist 100's of pages long, it's best to have a read over there and ask questions, but most come up blank but plenty failures.

You are correct that there is lots of information on Rennlist which is useful. There is one in particular that is hundreds of pages long, saying that there are 20 threads hundreds of pages long is like most of the comments you make about cars you don't like an exageration.

To answer a question you asked me earlier, yes I can read. Further to that I do understand how you use English to imply both authoritive knowledge and to make a problem seem much more common place than it infact is.