Shifting your 6speed 997
02-10-2010, 05:15 PM
#31
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b) when just chilling and having fun, around 4500-5500k\
Just playin'...saw the prior thread on the GT / porsche issue.
02-10-2010, 07:54 PM
#33
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hey law. arrow on the speedo shows up when it's time to shift up; it's in the manual.
And the others: all the machismo around reving up to 5500-6500 around town is just laughable. To me, that is showing off your toy in front of a some prius driving bystander. Belong in the same league as Chopper driving dudes setting off car-alarms in the middle of a town, to seek attention.
The manual clearly states that for better fuel economy, shift as soon as the up arrow is displayed for better mileage. The darn arrow shows up as soon as tach goes above 2,100 or so. I would think it wouldnt be in the manual if the engineers were worried such shifting would cause harsher engine wear. Europeans I know upshift like their life depends on it; i guess it's a habit from having to pay $10/g for gas.
And the others: all the machismo around reving up to 5500-6500 around town is just laughable. To me, that is showing off your toy in front of a some prius driving bystander. Belong in the same league as Chopper driving dudes setting off car-alarms in the middle of a town, to seek attention.
The manual clearly states that for better fuel economy, shift as soon as the up arrow is displayed for better mileage. The darn arrow shows up as soon as tach goes above 2,100 or so. I would think it wouldnt be in the manual if the engineers were worried such shifting would cause harsher engine wear. Europeans I know upshift like their life depends on it; i guess it's a habit from having to pay $10/g for gas.
02-10-2010, 08:17 PM
#34
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If the max torque area is around 4500 RPM (give or take) and you SHIFT up at that point to the next higher gear, where do you think your RPMs will be after that shift? They will be considerbly BELOW 4500 rpm, due to the different gear ratios. You optimally (for true exploitation of your best torque production) is to shift it higher so that when you are in the higher gear the RPMs have only fallen off to about 4500 rpms so that when you punch it again (as you continue to accelerate) you are in the peak torque range to the maximum extent possible. If you shift at 4500 rpm, you wind up lugging the engine and asking it to accelerate when it is BELOW the peak torque range.
Ideally, as you are working your way up the gears you keep the RPMs up sufficiently with each gear change to keep the engine speed up high enough to avoid lugging the engine.
Fortunately, with a 3.6 or 3.8 liter engine, we have substantially more torque than ever before in a 911 engine and so we actually can drop the rpms lower than ever before -- but you still don't want to ever accelerate from below 2000 rpm.
02-10-2010, 08:22 PM
#35
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hey law. arrow on the speedo shows up when it's time to shift up; it's in the manual.
And the others: all the machismo around reving up to 5500-6500 around town is just laughable. To me, that is showing off your toy in front of a some prius driving bystander. Belong in the same league as Chopper driving dudes setting off car-alarms in the middle of a town, to seek attention.
The manual clearly states that for better fuel economy, shift as soon as the up arrow is displayed for better mileage. The darn arrow shows up as soon as tach goes above 2,100 or so. I would think it wouldnt be in the manual if the engineers were worried such shifting would cause harsher engine wear. Europeans I know upshift like their life depends on it; i guess it's a habit from having to pay $10/g for gas.
And the others: all the machismo around reving up to 5500-6500 around town is just laughable. To me, that is showing off your toy in front of a some prius driving bystander. Belong in the same league as Chopper driving dudes setting off car-alarms in the middle of a town, to seek attention.
The manual clearly states that for better fuel economy, shift as soon as the up arrow is displayed for better mileage. The darn arrow shows up as soon as tach goes above 2,100 or so. I would think it wouldnt be in the manual if the engineers were worried such shifting would cause harsher engine wear. Europeans I know upshift like their life depends on it; i guess it's a habit from having to pay $10/g for gas.
If you bought the car to lug the engine below 2000 then you bought the wrong car entirely. I understand they're opening up the Toyota lines again...
02-10-2010, 08:40 PM
#36
My 997.2 6 speed has the shift arrow, but once I activate sport it does not come on.
02-10-2010, 08:55 PM
#37
If this is what you actually do, then you are truly missing the point of shifting.
If the max torque area is around 4500 RPM (give or take) and you SHIFT up at that point to the next higher gear, where do you think your RPMs will be after that shift? They will be considerbly BELOW 4500 rpm, due to the different gear ratios. You optimally (for true exploitation of your best torque production) is to shift it higher so that when you are in the higher gear the RPMs have only fallen off to about 4500 rpms so that when you punch it again (as you continue to accelerate) you are in the peak torque range to the maximum extent possible. If you shift at 4500 rpm, you wind up lugging the engine and asking it to accelerate when it is BELOW the peak torque range.
Ideally, as you are working your way up the gears you keep the RPMs up sufficiently with each gear change to keep the engine speed up high enough to avoid lugging the engine.
Fortunately, with a 3.6 or 3.8 liter engine, we have substantially more torque than ever before in a 911 engine and so we actually can drop the rpms lower than ever before -- but you still don't want to ever accelerate from below 2000 rpm.
If the max torque area is around 4500 RPM (give or take) and you SHIFT up at that point to the next higher gear, where do you think your RPMs will be after that shift? They will be considerbly BELOW 4500 rpm, due to the different gear ratios. You optimally (for true exploitation of your best torque production) is to shift it higher so that when you are in the higher gear the RPMs have only fallen off to about 4500 rpms so that when you punch it again (as you continue to accelerate) you are in the peak torque range to the maximum extent possible. If you shift at 4500 rpm, you wind up lugging the engine and asking it to accelerate when it is BELOW the peak torque range.
Ideally, as you are working your way up the gears you keep the RPMs up sufficiently with each gear change to keep the engine speed up high enough to avoid lugging the engine.
Fortunately, with a 3.6 or 3.8 liter engine, we have substantially more torque than ever before in a 911 engine and so we actually can drop the rpms lower than ever before -- but you still don't want to ever accelerate from below 2000 rpm.
02-10-2010, 10:32 PM
#39
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02-10-2010, 10:40 PM
#40
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I think the OT was relating to around town with cars in front and in back of them. At least, that's how I interpreted it. It's not easy to drive it ***** to the walls with a car in front of you. Or smash the pedal down only to have to stop for a light. It's no fun IMHO. If I want a fun drive I take it out of the congestion and hit a back road.
02-10-2010, 11:14 PM
#41
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02-10-2010, 11:23 PM
#43
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I think the OT was relating to around town with cars in front and in back of them. At least, that's how I interpreted it. It's not easy to drive it ***** to the walls with a car in front of you. Or smash the pedal down only to have to stop for a light. It's no fun IMHO. If I want a fun drive I take it out of the congestion and hit a back road.
02-10-2010, 11:31 PM
#44
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