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718 Cayman GT4 is here – at long last.!

That's rather odd Ralph. So you're OK to run a car with an identical engine but a little less power and marginally lower rev limit for another 8k miles?

Maybe Porsche are factoring-in the possibility that GT4s will be running more track-day miles than their GTS counterparts? Probably just being more conservative since it's a new and untried design, despite being a spin-off from the 9A2 turbo engine, and I suppose you might as well let the customer do some development driving for you. [;)]

Jeff

 
I don't know what the service interval is for the new GTS 4.0, I suspect it's the same as the 718 GT4? The 981 3.4/3.8 and 718 2.0/2.5 engines were/are all 2 years/20k miles. I assumed the shorter service interval on the 718 GT4/Spyder was due to it being a new engine, although you can probably argue it's done for money reasons. I don't know what the interval is on a GT3 as a comparision?

I'm planning on leaving the car on Cup2s all year round, Jeff. I don't drive it daily, and I wouldn't take it out in a flood or snow/ice, plus in an emergency I'd just call a taxi.

 
Twinfan said:
I don't know what the service interval is for the new GTS 4.0, I suspect it's the same as the 718 GT4? The 981 3.4/3.8 and 718 2.0/2.5 engines were/are all 2 years/20k miles. I assumed the shorter service interval on the 718 GT4/Spyder was due to it being a new engine, although you can probably argue it's done for money reasons. I don't know what the interval is on a GT3 as a comparision?

I'm planning on leaving the car on Cup2s all year round, Jeff. I don't drive it daily, and I wouldn't take it out in a flood or snow/ice, plus in an emergency I'd just call a taxi.

GTS 4.0 Service intervals are 2 years/20K

991 GT3 2 years/12K same as the 718 GT4

 
Cheers Nick. Bit odd why they've reduced the GT4 interval compared to the 981 version and GTS 4.0 then!

 
Dave,

Judging by the mileages on most 981 GT4s for sale I don't think the reduction to 12,000 mile service intervals will make much difference. Still an odd anomaly, though Porsche will no doubt have their reasons.

Jeff

 
As noted elsewhere the 718 Spyder is now available with summer tyres - rather than track-oriented MPS Cup 2s - which maybe more appropriate for a 'lifestyle' type of sports car.

No such option on the GT4 right now but my sense is that most won't necessarily see any track use and a more road-oriented choice would perhaps be more appropriate even though it could be argued that a summer tyre isn't ideal for year-round use either. I'm sure though that Porsche would prefer owners to fork out a hefty £4,810 for a winter wheel-and-tyre set.!

Jeff

 
Got caught in heavy rain showers today on the N Yorkshire moors. Cup 2s behaved really well

tried to unstick them out of a few corners

mind you there is a difference between a wet road surface and a rain shower on a dry road surface 🤔

Happy days 2500 on the clock now 👍

 
The GT4 RS is out and about at the 'Ring again this time with centre-locks and with patches on the top of the front wings [disguising vents like those on the GT3 RS perhaps?].

https://www.pistonheads.com/news/ph-germancars/porsche-718-cayman-gt4-rs---new-pics/42358

The rear window grilles are still in evidence but it's impossible from the pics to see inside the car to figure out their actual purpose other than to surmise that they provide supplementary intake air or engine bay cooling.

Will the swan-neck rear wing supports make it into production are or they just there to optimise the wing?

Although it looks production-ready the release date is still conjecture. No doubt it will have the PDK 'box which has yet to be announced on the GT4 and GTS for ROW and the 992 GT3 RS will be announced first, so we may not see it until Q2 2021.

Jeff

 
Swan neck wing will make production. It will be PDK only.

Launch in mid-2021, first (very limited edition) cars late '21 early '22, after production of the regular GT4 ends.

The rear windows are for the same air intake system as the Clubsport race car.

All in my opinion of course [8D]

 
Dave,

I think that if the GT3 RS gets the swan-neck wing supports then the GT4 RS will follow suit.

PDK is a no-brainer because of the limited torque capacity of the manual 'box and the uprated engine in the RS will have a bit more power and torque ruling out its use.

Maybe I'm missing something but I haven't seen any 718 GT4 Clubsport race cars with grilles replacing the rear windows ... development cars perhaps? Looking at all the pics in PP for the Spring Challenge GB, all the cars appear to have transparent rear windows.

With nothing obvious happening on the 718 replacement front I'm sure production of all variants will continue into 2023 including the 'standard' GT4, unless Porsche decide to restrict production numbers to something similar to those for the 981 GT4 ... which will go against AP's statement on launch that the 718 GT4 would be available to everyone who wants one [taken by me with a pinch of salt!]. GT4 RS availability will be very limited and who knows what numbers will be involved or when it'll be released - maybe this time next year for MY2022? I don't have the numbers to hand but if there are more GT4s built than GT3s can we assume that the same will apply for the RS variants? All uncharted territory.

Jeff

 
Porsche never overlap non-RS and RS product production, so they would be breaking the mould if the GT4RS comes out and GT4 production continues. I can't see it happening personally, but who knows. Maybe the GT4RS won't appear until 2022, so GT4 production may continue a little longer, but I think the 992 GT3 will appear early 2021 with the GT4RS mid-late 2021. Just my opinion, I've no concrete info, obviously! The GT4RS will be super limited by all accounts, even according to my OPC SA, but again that's just our opinion.

As for the intake:

718_cs_intake_bfc6dfb412010f2f1ce37a605d764e920ff81ec7.jpg


and pics in action here:

https://rennlist.com/forums/718-gts-4-0-gt4-spyder/1159052-718-gt4rs-14.html#post16468923

 
Thanks Dave.

Both the rendering and pics don't bear the hallmark of official Porsche, and there's no way the flexi-pipe arrangement would make it into a production car. The latest scoops in the RS rear windows look more like it and there will have to be some properly engineered internal plastic ducting and engine deck mods to accompany it to finish the job.

If these ducts are to be the sole route for intake air it begs the question about the function of the large side intakes - engine bay cooling?

Jeff

 
I believe the kit is an offiical Porsche part, I think that's what the Rennlist posters were saying.

I assume both side pods now provide engine cooling, yes.

 
Yes, wading through the usual BS on there it seems that it's a Porsche Motorsport option. The posts are from early March this year so obviously the mod has been available for a while, although the plastic moulded side window intake [which some wag amusingly labelled urinal!] bears no resemblance to that in the latest RS pics. Strange that it's not been in evidence over here as yet but nothing unusual in the US becoming early adopters.

Listening to some of the latest clips of the RS at the 'Ring it's obvious that it's running with PDK, so that's one box ticked at least. If as you say Porsche follow convention on RS versions only being released when standard GT production has ceased I reckon there could be a very long wait. With I think about 570 981 GT4s registered it'll be interesting to see what happens when 718 GT4 build numbers approach that number, especially if 718 production extends into 2023 owing to the lack of a replacement.

Jeff

 
There are over 600 UK 981 GT4s, and currently around 300 UK 718 GT4s registered. Summer next year would see the numbers equalise after 3 more batches of cars. I don't think 718 GT4s will be produced up to 2023, that would be a 4 year run and ~1200 cars. Despite what AP stated in 2019, the GT 'aura' would want to be upheld via production numbers by the marketing folks?

I would think the regular 718 will continue as you say, including the GTS 4.0 given that it's only just arrived and the 981 GTS ran for 3 years or so.

 
Predicting GT4 numbers is a difficult call Dave. With the substantial price hike over the 981 Porsche will be making a lot more money on the 718 but they've still got to recoup the significant development costs for the 4.0L engine in a very short time, only some of which will be met by GTS [and maybe extended Spyder?] sales, especially since the engine could well be a dead duck if the replacement Cayman turns out to be a full BEV unless Porsche chooses to produce it in very small numbers for the GT4 specifically and possibly the Spyder, though I think it impossible for Porsche to produce a chassis which could cater for both internal combustion and full battery power.

Add to that the current world turmoil and vehicle manufacturers could well be struggling to find buyers. Although Porsche and other manufacturers' sales are quite buoyant right now meeting pent-up demand, that may not be the case as the full financial fall-out from Covid really begins to bite.

Jeff

 
I wonder if, rather than the Clubsport intake if the duct is for the rear brakes. You could duct direct down via the little rear lockers. This would remove the current rear ducts (which in my experience fall off a little easily) and clean up the airflow underneath.

madcap theory no doubt but this avoids having a direct path from an engine fire into the boot.

alternatively maybe they will fit fire resistant glass between the pax compartment and engine bay so the motorsport intake could be fitted.

final theory - could this be a mule testing some of the next gen Clubsport mods? Yes

 
Interesting theories Richard. Nothing's off the table ATM until someone manages to sneak an interior pic when the car's parked-up ... winter testing in Scandinavia maybe?

I'm sure the ducting and other mods - NACA ducts in the bonnet and possible front wing vents - are equally applicable to the race car but there's no reason why they wouldn't use an actual Clubsport development car unless they're short of development time and vehicles and need to compress the programme. Incidentally, the Clubsport has an emergency hatch in the roof and I can't see any evidence of that in the pics so it must be a genuine RS development car.

Jeff

 
Cold air intakes are available today in the USA, less expensive than the Motorsport parts but obviously not SRO homologated.

intake-1-d8fec7f297ea1e22469b5f74da130ecb14cf6ea6.jpg


intake-2-343696a5c21ed320a725f00dd57407e344da0169.jpg


intake-3-c3de96ba2eb53bc227481c551d6ab948b3db2a60.jpg


Looks like it could be fitted to road car without too much interior adaptation. Apparently reduces intake temperatures to within a few degrees of ambient and gains a handful of mph on straights. Not sure about three-quarter rear vision although a Lexan glass replacement intake v carbon fibre could reduce that problem.

 

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