Re: Anticipating changing at least my car's rear Michelin PA4s after this season, |  |  |
Expect the best, and accept no substitute. |
Products for your Boxster, Cayman and Carrera. |
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A few magazine writers were invited to 718 testing in Yellowknife in northern Canada where they were undergoing winter testing.
For reference
-20C = -4F
-10C = 14F
Info they got from Porsche
Boxster / Cayman 2.0 litre / 300 HP / 266 lb ft
Boxster S / Cayman S . 2.5 litre flat 4 / 340 HP / 295 lb ft.
Smaller engines will get about 5 mpg better mileage
Cars gain about 85 kg = 190 lbs due to increased weight of turbo, intercooler and related plumbing
So for some reading and additional details.
[www.carmagazine.co.uk]
[www.autocar.co.uk]
For some listening (it's in German, but you'll understand)
[www.auto-motor-und-sport.de]
For reference
-20C = -4F
-10C = 14F
Info they got from Porsche
Boxster / Cayman 2.0 litre / 300 HP / 266 lb ft
Boxster S / Cayman S . 2.5 litre flat 4 / 340 HP / 295 lb ft.
Smaller engines will get about 5 mpg better mileage
Cars gain about 85 kg = 190 lbs due to increased weight of turbo, intercooler and related plumbing
So for some reading and additional details.
[www.carmagazine.co.uk]
[www.autocar.co.uk]
For some listening (it's in German, but you'll understand)
[www.auto-motor-und-sport.de]
| Re: Cost aside, the test cars' equipment ought to be what's being developed for production vehicles, Guenter in Ontario - 8 years ago |
Quote
Laz
... otherwise the conclusions drawn won't be of much value. It'd be akin to using "qualifying tires."
I understand what you're saying. I guess I should have been clearer and saying that cost was no object in the type of tire(s) used. With the limited number of tire types available for these wheel sizes, they may have been using any of the N rated tires. At least that would be my guess.
I think the main objective of these winter tests is to check that engine starting, warming up, seat heaters, car heaters, steering, transmission shifting all work properly in northern winter climates. I'm not sure that tests would include "performance" driving under these conditions.
One thought would be to check and see if you can find out what tires are used in the Camp 4 Winter Performance school that they run here in Canada. They run different types of tires, including some studded tires.
[porschedrivingexperiencecanada.ca]
| German video.... dennisafrompa - 8 years ago |
MikenOH - 8 years ago |
Quote
MikenOH
I thought thy were going to be lighter than the 981?
Without significant changes to the cars, I don't know how they can make them much lighter. With the Spyder, weight savings are achieved by removing some things like AC and entertainment units, which most owners probably order as non cost options. But, it allows Porsche to claim the cars are that much lighter. Realistically, I think the main weight savings with the Spyder comes from the simplified roof and taking out its motor and transmission.
Sounds like there's more weight gained from the turbo and related equipment that what is saved by removing to cylinders. Plus, I think it adds a lot more complexity to the drive train. Sounds like the engine compartment is really packed with the new turbo fours. One of the comments in the German article was that you couldn't even fit an orange anywhere into the engine compartment. They've also had to go to 4 dynamic engine mounts to reduce vibration of the 4 cylinder units. Lots of changes, that's for sure. You'll save some gas (provided you don't keep spooling up the turbo - aka drive it like a Camery). But I imagine servicing costs will go up.
Quote
Guenter in Ontario
Quote
MikenOH
I thought thy were going to be lighter than the 981?
Without significant changes to the cars, I don't know how they can make them much lighter. With the Spyder, weight savings are achieved by removing some things like AC and entertainment units, which most owners probably order as non cost options. But, it allows Porsche to claim the cars are that much lighter. Realistically, I think the main weight savings with the Spyder comes from the simplified roof and taking out its motor and transmission.
Sounds like there's more weight gained from the turbo and related equipment that what is saved by removing to cylinders. Plus, I think it adds a lot more complexity to the drive train. Sounds like the engine compartment is really packed with the new turbo fours. One of the comments in the German article was that you couldn't even fit an orange anywhere into the engine compartment. They've also had to go to 4 dynamic engine mounts to reduce vibration of the 4 cylinder units. Lots of changes, that's for sure. You'll save some gas (provided you don't keep spooling up the turbo - aka drive it like a Camery). But I imagine servicing costs will go up.
I could be wrong, but wasn't there a curb weight posted here for the 718 that was less than the 981?
Agreed--the turbo requires a lot of "plumbing" gear (turbo, downpipe, wastegate, intercooler...) that adds weight, takes up space and adds more heat to an tight engine compartment. It will be interesting to see how Porsche has managed getting the heat out of that tight engine compartment, but they have decades of experience do exactly that with the 911.
I bring that up because I looked under the EB Mustang's hood for the first time and that little 4 banger looks lost in an engine bay that was designed to handle the 5.0 motor. Plenty of air flow in there..
| Re: Huge bump in HP and TQ for the base Boxster, but.. db997S - 8 years ago |
| Impressive!!! Pedro (Odessa, FL) - 8 years ago |
… how I perfectly understand German, all of the sudden 
Happy 718'ing
Pedro
Pedro Bonilla
1998 Boxster 986 - 311,000+ miles: [www.PedrosGarage.com]
PCA National Club Racing Scrutineer - PCA National HPDE Instructor - PCA Technical Committee (Boxster/Cayman)
Racecar spelled backwards is Racecar
"Racing is life. Anything before or after is just waiting" ... Steve McQueen as Michael Delaney in "LeMans"
"If you wait, all that happens is that you get older"... Mario Andretti
"Being second is to be the first of the ones who lose" ... Ayrton Senna
Happy 718'ing
Pedro
Pedro Bonilla
1998 Boxster 986 - 311,000+ miles: [www.PedrosGarage.com]
PCA National Club Racing Scrutineer - PCA National HPDE Instructor - PCA Technical Committee (Boxster/Cayman)
Racecar spelled backwards is Racecar
"Racing is life. Anything before or after is just waiting" ... Steve McQueen as Michael Delaney in "LeMans"
"If you wait, all that happens is that you get older"... Mario Andretti
"Being second is to be the first of the ones who lose" ... Ayrton Senna
Laz - 8 years ago |
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