Discussion
Thanks, that is very interesting.
So the S running at 15bhp less on the same motor and gearbox, doesn't have this rad, so presumably is running right up to the wire on cooling capacity (water/oil/gearbox, we're not sure?).
I wonder if the 10bhp more again 991 base has this rad, or indeed the GTS Boxster at 5bhp over the CS?
As Phil Mitchell would say, "wot's garn on"?
So the S running at 15bhp less on the same motor and gearbox, doesn't have this rad, so presumably is running right up to the wire on cooling capacity (water/oil/gearbox, we're not sure?).
I wonder if the 10bhp more again 991 base has this rad, or indeed the GTS Boxster at 5bhp over the CS?
As Phil Mitchell would say, "wot's garn on"?
Edited by nsm3 on Friday 22 August 15:03
I think the PDK gearbox has an oil to water heat exchanger that is cooled by the engine coolant.
Hard track use would place higher demands on the engine cooling system from the toasty gearbox oil.
Cayman S PDK cars already have different ducting in front of the radiators than non PDK S caymans so I guess it must me marginal and could use beefing up to take the extra power and maybe harder use into account.
Hard track use would place higher demands on the engine cooling system from the toasty gearbox oil.
Cayman S PDK cars already have different ducting in front of the radiators than non PDK S caymans so I guess it must me marginal and could use beefing up to take the extra power and maybe harder use into account.
Anyone who has driven a 987.2 S PDK in stop-start traffic will tell you that it's not got a lot of cooling capacity to play with. The fans kick in very quickly.
I've only had the happen a few times because I avoid traffic like the plague, and it's hard to make the engine get remotely hot in spirited driving (I guess because the air flow to the rads is pretty good at speed). But there's obviously a bit of a heat issue in any mid-engined car if it is working hard but not moving very fast.
I expect that, on a low speed track, a 987.2 S with PDK might struggle a bit for cooling. It wouldn't surprise me if Porsche decided to fix this in the 981 generally or maybe just the GTS.
I don't know about this 3 rad issue, though, as I genuinely cannot remember whether or not my 987.2 has a central rad!! I've cleaned around there a few times but am obviously stupid.
I've only had the happen a few times because I avoid traffic like the plague, and it's hard to make the engine get remotely hot in spirited driving (I guess because the air flow to the rads is pretty good at speed). But there's obviously a bit of a heat issue in any mid-engined car if it is working hard but not moving very fast.
I expect that, on a low speed track, a 987.2 S with PDK might struggle a bit for cooling. It wouldn't surprise me if Porsche decided to fix this in the 981 generally or maybe just the GTS.
I don't know about this 3 rad issue, though, as I genuinely cannot remember whether or not my 987.2 has a central rad!! I've cleaned around there a few times but am obviously stupid.
I overheated the gearbox today on a PDK GTS with central radiator. Car basically went into protection mode and flagged a warning to say as much. It also prevented Sport & Sport + from being accessed. Took 5 min of low rpm cruising and a cycling of the ignition to come back to life. Engine Oil temperature was low at 95C at the time, so it's definitely a transmission heating issue. Interesting that it overheated even with a third radiator as air temp was only 18C.
CJP80 said:
I overheated the gearbox today on a PDK GTS with central radiator. Car basically went into protection mode and flagged a warning to say as much. It also prevented Sport & Sport + from being accessed. Took 5 min of low rpm cruising and a cycling of the ignition to come back to life. Engine Oil temperature was low at 95C at the time, so it's definitely a transmission heating issue. Interesting that it overheated even with a third radiator as air temp was only 18C.
Thats a bit dissapointing to hear, to be honest. How were you driving at the time?SkinnyP said:
Thats a bit dissapointing to hear, to be honest. How were you driving at the time?
Car was warmed up. Built up to 5 hot laps of the new 'Handling Circuit', and then onto the figure of eight. 10 or so laps round it, with PDK in S+ and then onto the new 'Straights'. Had a failed launch control attempt (due to me not activating it properly) and then one further launch control start before the warning message came on. As I said, outside temp was cool and engine oil temp relatively normal. You guys might want to head over to planet-9 where the 3rd radiator was discussed a while back and I think some owners on there were considering a retrofit for their non-GTS cars. Also you won't get lambasted for getting red dials, PDK, PASM and an ugly bodykit 
Also I did a PEC session last week in the black manual GTS that someone posted a pic of earlier. It really is a lovely lovely car - worth it for the PSE alone - compared to the manual 981CS I tried in April (can't remember how that was specced) I'd say the noise was the biggest difference for me. I also tried a manual 991C2S with all the 'correct' suspension/exhaust bells and whistles on the new handling track and surprisingly I found it a bit more of a laugh? The 7speed gearbox wasn't great though and less forgiving but I think it might be down to me being a crap driver while the GTS just flatters me without breaking a sweat along with the fact that the new circuit (which I tried the 991 on) isn't just sit in 3rd gear all the way round like the old circuit which I tried the GTS on (with little space for pedal to the floor thrills to hear the engine sing all the way through the rev range). The Cayman felt a lot tighter/sharper and leaner while the 911 was a bit more lardy yet still a good laugh - just my humble opinion on limited time with the 2 cars, I guess I had much lower expectations of the 911 than the Cayman!
Also I did a PEC session last week in the black manual GTS that someone posted a pic of earlier. It really is a lovely lovely car - worth it for the PSE alone - compared to the manual 981CS I tried in April (can't remember how that was specced) I'd say the noise was the biggest difference for me. I also tried a manual 991C2S with all the 'correct' suspension/exhaust bells and whistles on the new handling track and surprisingly I found it a bit more of a laugh? The 7speed gearbox wasn't great though and less forgiving but I think it might be down to me being a crap driver while the GTS just flatters me without breaking a sweat along with the fact that the new circuit (which I tried the 991 on) isn't just sit in 3rd gear all the way round like the old circuit which I tried the GTS on (with little space for pedal to the floor thrills to hear the engine sing all the way through the rev range). The Cayman felt a lot tighter/sharper and leaner while the 911 was a bit more lardy yet still a good laugh - just my humble opinion on limited time with the 2 cars, I guess I had much lower expectations of the 911 than the Cayman!
|http://thumbsnap.com/uFGb9Yqi[/url]Congratulations. They looks lovely in blue with the PCCB's! What's the spec of the car?
On the subject of PCCBs, I phoned OPC Colchester (one of my local dealers) to find out the replacement cost on a single disk and a set of pads. I single disk I was quoted at 3347.28 +VAT and pads at 377.49 +VAT. So you're looking around £15,000 ~ for a complete disk and pad change.
On the subject of PCCBs, I phoned OPC Colchester (one of my local dealers) to find out the replacement cost on a single disk and a set of pads. I single disk I was quoted at 3347.28 +VAT and pads at 377.49 +VAT. So you're looking around £15,000 ~ for a complete disk and pad change.
rxpandy said:
Congratulations. They looks lovely in blue with the PCCB's! What's the spec of the car?
On the subject of PCCBs, I phoned OPC Colchester (one of my local dealers) to find out the replacement cost on a single disk and a set of pads. I single disk I was quoted at 3347.28 +VAT and pads at 377.49 +VAT. So you're looking around £15,000 ~ for a complete disk and pad change.
They'll never need changing. My Gen I Cayman S had 36000 miles on it when I sold it and there was still 70% of the pad material left an no discernible wear on the discs themselves. The danger is fracture due to impact or overheating.On the subject of PCCBs, I phoned OPC Colchester (one of my local dealers) to find out the replacement cost on a single disk and a set of pads. I single disk I was quoted at 3347.28 +VAT and pads at 377.49 +VAT. So you're looking around £15,000 ~ for a complete disk and pad change.
I would not track a car with PCCB for this reason, but no problem for the street. You can also easily swap out the discs for steel rotors if you want to do track work.
CJP80 said:
They'll never need changing. My Gen I Cayman S had 36000 miles on it when I sold it and there was still 70% of the pad material left an no discernible wear on the discs themselves. The danger is fracture due to impact or overheating.
I would not track a car with PCCB for this reason, but no problem for the street. You can also easily swap out the discs for steel rotors if you want to do track work.
That was the only reason I was looking into a replacement cost, as I do plan to track the car. However, I may review this and get some steel ones just for this reason. I'd guess this replacements would be the same as the 997 rotors/pads? What is the life expectancy of the PCCB's just for reference? I would not track a car with PCCB for this reason, but no problem for the street. You can also easily swap out the discs for steel rotors if you want to do track work.
rxpandy said:
CJP80 said:
They'll never need changing. My Gen I Cayman S had 36000 miles on it when I sold it and there was still 70% of the pad material left an no discernible wear on the discs themselves. The danger is fracture due to impact or overheating.
I would not track a car with PCCB for this reason, but no problem for the street. You can also easily swap out the discs for steel rotors if you want to do track work.
That was the only reason I was looking into a replacement cost, as I do plan to track the car. However, I may review this and get some steel ones just for this reason. I'd guess this replacements would be the same as the 997 rotors/pads? What is the life expectancy of the PCCB's just for reference? I would not track a car with PCCB for this reason, but no problem for the street. You can also easily swap out the discs for steel rotors if you want to do track work.
I,ll never track the car, only street use, I choose the PCCP because they look better, the steel version do break very well, but look IMHO too small. ( I don`t like it that way) Another great, but seldom mentioned, advantage is the sheer lack of break dust with the PCCB`s !
So Sapphire Blue, Leather/alcantara interior, Yellow seat belts, just looks great with the yellow calipers/PCCB, PDK, PCM/Nav, PASM, SCP, PDLS, PTV, PSE, Entry & Drive, grey band front windscreen, 20" Carrera Classic, Power steering plus, Climate plus, Dimming mirrors and integrated rain sensor, Hifi plus, Park assist rear, seat heating,.
I think that sums it up allright :-)
In the Netherlands we have yellow license plates, well they will fit nicely as well :-))
Edited by Romo on Saturday 23 August 19:22
Edited by Romo on Saturday 23 August 19:24
Edited by Romo on Saturday 23 August 19:25
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