GT4 3rd Gear Failure

[Motorhead]

That'll be a relief for GT4 owners Ralph.

I note that it's GT4-specific. I believe that failures of other 981s - and even a 718 - have been reported, so I wonder what the situation will be with them?

Jeff

 

[ralphmusic]

Jeff,

The situation with non-GT 981 and 718 has been handled in the same way, simple replacement.

I think Porsche have been pretty good about this - of course they have a back to back with the gearbox manufacturer.

Uncertainty lies in the future post owner's warranty coverage

 

[ralphmusic]

If you have any problem with Porsche being reluctant (which they have not been so far) to replace GT4 gearboxes, see this gem of a Service Bulletin.

 

[Twinfan]

Same gearbox part number as the 981S and 981 GTS that have PTV fitted...

 

[MrDemon]

the issue is if you release the GT4's 430 real BHP will they warranty the faulty gearbox when you break it in a modded car ?

 

[Ray]

the issue is if you release the GT4's 430 real BHP will they warranty the faulty gearbox when you break it in a modded car ?

the issue is if you release the GT4's 430 real BHP will they warranty the faulty gearbox when you break it in a modded car ?

I would have thought that depended on the modifications made. Engine mods, no chance. Remember the little things like the stone/leaf/debris mesh guards fitted to the cooling apertures of the Cayman etc.

Ray

 

[MrDemon]

the issue is if you release the GT4's 430 real BHP will they warranty the faulty gearbox when you break it in a modded car ?

the issue is if you release the GT4's 430 real BHP will they warranty the faulty gearbox when you break it in a modded car ?

I would have thought that depended on the modifications made. Engine mods, no chance. Remember the little things like the stone/leaf/debris mesh guards fitted to the cooling apertures of the Cayman etc.

Ray

yes on new faults, but this is a known defect, not a fault. you have consumer rights on defected products, but how long for who knows esp out of warranty cars.

Porsche gave the 991.1 GT3 engine a 10 year warranty even if you took no warranty.

 

[Contraband]

Surely every GT4 potentially has a gearbox just waiting to fail then?

If Porsche have acknowledged that there is a potential fault then I think they should either recall or replace f.o.c. in the future.

I spoke to a new GT4 owner last week and he had never heard about this fault!

 

[Twinfan]

The part number is specific to 2016 models.

 

[ralphmusic]

The part number is specific to 2016 models.

Do you have the old and new numbers to hand?

 

[MrDemon]

Surely every GT4 potentially has a gearbox just waiting to fail then?

If Porsche have acknowledged that there is a potential fault then I think they should either recall or replace f.o.c. in the future.

I spoke to a new GT4 owner last week and he had never heard about this fault!

Why would he know ? and hence why recall 600 UK cars when maybe only 20 have failed.

much cheaper to replace the failed ones than offer a recall on 600 cars.

The cogs go under stress mainly on track under brakes when changing from 4th the 3rd under load.

road only cars might never break or will have less risk at this young age.

Also not every GT4 potentially has a gearbox just waiting to fail as the early cars had splined gears so if you own circa sub Nov 2015 cars you have a stronger gear box. ie it's splined not welded, but yes one might say any car made after then is a ticking time bomb if you load up 3rd gear on a down shift.

 

[Twinfan]

The part number is specific to 2016 models.

Do you have the old and new numbers to hand?

981 300 010 01 Transmission 1 G81.00 I219 (Base Cayman, standard diff [no PTV]) 981 300 010 X Transmission 1 G81.00 I219 (Base Cayman, standard diff [no PTV]) 981 300 020 01 Transmission 1 G81.00 I220 (Base Cayman, limited slip diff [with PTV]) 981 300 020 X Transmission 1 G81.00 I220 (Base Cayman, limited slip diff [with PTV]) 981 300 010 21 Transmission 1 G81.20 I219 (Cayman S/GTS, standard diff [no PTV]) 981 300 010 AX Transmission 1 G81.20 I219 (Cayman S/GTS, standard diff [no PTV]) 981 300 010 23 Transmission 1 G81.20 I219 (Cayman S/GTS, standard diff [no PTV]) 981 300 010 CX Transmission 1 G81.20 I219 (Cayman S/GTS, standard diff [no PTV])

981 300 020 21 Transmission 1 G81.20 I220 (Cayman S/GTS, limited slip diff [with PTV]) 981 300 020 AX Transmission 1 G81.20 I220 (Cayman S/GTS, limited slip diff [with PTV]) 981 300 020 23 Transmission 1 G81.20 I220 (Cayman S/GTS, limited slip diff [with PTV]) 981 300 020 CX Transmission 1 G81.20 I220 (Cayman S/GTS, limited slip diff [with PTV])

 

[ralphmusic]

^^^

Thanks, we're on the same page, it's just that I haven't been able to establish a certain link to VIN number, Model Year or Month/Year of build.

Version 21 fitted to CS and CGTS

Version 22 unique to GT4

Version 23 fitted to CS/GTS/GT4

So the logic is that they moved at some date to the Version 23 CS/CGTS box but some of those boxes have also failed (fewer failures publicised) so were they Version 21 or 23?

All a bit of a puzzle.

...interesting is how many X/AX/BX/CX rebuild numbers there are... must have a production line

 

[Twinfan]

I wondered what the X versions were - are you saying they're factory rebuilds of damaged boxes?

 

[ralphmusic]

If you plough through rennlist you'll see comments about replacement transmissions having *X part numbers. On that basis I surmise it is so.

 

[Twinfan]

Gotcha - makes sense.

 

[paul08]

I have a 981 Boxster Spyder, which I assume shares engines and gearboxes with GT4s. Wondering whether I should check my Vin number to see what gearbox I have

 

[Twinfan]

Four versions on the Spyder, but the same one as the GT4 is listed:

981 300 020 22 Transmission 1 G81.20 I220 981 300 020 23 Transmission 1 G81.20 I220 981 300 020 BX Transmission 1 G81.20 I220 981 300 020 CX Transmission 1 G81.20 I220

 

[MrDemon]

I have a 981 Boxster Spyder, which I assume shares engines and gearboxes with GT4s. Wondering whether I should check my Vin number to see what gearbox I have

as these cars did not sit about in show rooms, better to just look at the V5 and see the reg date and subtract 3 weeks from that as a build date.

 

[ralphmusic]

I have a 981 Boxster Spyder, which I assume shares engines and gearboxes with GT4s. Wondering whether I should check my Vin number to see what gearbox I have

I had my OPC run a VIN query report when I bought my car which shows build details, ECU revision numbers, and engine and gearbox serial numbers and types etc.

However it does not show the part number of the gearbox (i.e. 981 300 020 nn) and I am not sure OPCs have access to this level of detail. It is really odd what they can see and what they can't; they quote VIN the number for parts ordering and warranty repair purposes but some useful detail seems to be held only on factory systems.