Driving Style
02-29-2016, 11:07 PM
#17
Poseur
Rennlist Member
Rennlist Member
Although these larger displacement engines tolerate a reasonable amount of 'lugging' compared to the smaller displacement days of the 911, why do it? Always drive for conditions. Sometimes you're not looking for max acceleration, and sometimes you are.
03-01-2016, 08:20 AM
#18
Race Director
Read my earlier posting. When you change at 6500 RPMs you will drop the RPMs in the next gear to a range below the optimal torque production area for that engine. You wind up lugging the engine.
Although these larger displacement engines tolerate a reasonable amount of 'lugging' compared to the smaller displacement days of the 911, why do it? Always drive for conditions. Sometimes you're not looking for max acceleration, and sometimes you are.
Although these larger displacement engines tolerate a reasonable amount of 'lugging' compared to the smaller displacement days of the 911, why do it? Always drive for conditions. Sometimes you're not looking for max acceleration, and sometimes you are.
You do not understand what lugging is.
Lugging does not occur anywhere near 4500.
Literally shaking my head
03-01-2016, 11:21 AM
#19
Rennlist Member
03-01-2016, 12:13 PM
#20
Three Wheelin'
While HP peaks before red line and drops slightly at red line, if you're attempting to extract 100% max accel/performance (such as a race), shifting at red line drops the engine RPM to a more ideal point.
For example: There are some Variable Valve Timing (VVT) engines that reward you greatly for shifting at red line, even though power dips slightly at red line, because when you land in the next gear the VVT is absolutely fully advanced at that RPM.
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For example: There are some Variable Valve Timing (VVT) engines that reward you greatly for shifting at red line, even though power dips slightly at red line, because when you land in the next gear the VVT is absolutely fully advanced at that RPM.
.
Last edited by Philster; 03-01-2016 at 02:37 PM.
03-01-2016, 01:09 PM
#21
Instructor
Thread Starter
While peaks before red line and drops slightly at red line, if you're attempting to extract 100% max accel/performance (such as a race), shifting at red line drops the engine RPM to a more ideal point.
For example: There are some Variable Valve Timing (VVT) engines that reward you greatly for shifting at red line, even though power dips slightly at red line, because when you land in the next gear the VVT is absolutely fully advanced at that RPM.
.
For example: There are some Variable Valve Timing (VVT) engines that reward you greatly for shifting at red line, even though power dips slightly at red line, because when you land in the next gear the VVT is absolutely fully advanced at that RPM.
.
03-01-2016, 02:41 PM
#23
Three Wheelin'
Racing: You're doing a disservice if you (generally) don't shift at red line (and there are times when short shifting is proper -- I know; I know).
I am a fan of the Italian tune up, so I usually make runs up near red line, but I'm not doing anything a disservice if I don't hit red line.
Don't overthink it. Just wind the damn engine out and enjoy it. Good god, what it does above 4500 RPM should be major reason for even owning it.
03-01-2016, 02:43 PM
#24
Race Director
Its a modern engine. Drive it however you like, maintain it well, and it will make no difference.
the only basics
Avoid lugging (thats a moderate load at like 1200rpm situation, not 4500rpm)
Avoid high loads and high rpms on an engine that doesn't have the oil up to temp
Try not to sit on the rev limiter all day long. Tagging it occasionally is no biggie
No money shifts
03-01-2016, 03:07 PM
#25
Rennlist Member
Originally Posted by Quadcammer
Avoid lugging (thats a moderate load at like 1200rpm situation, not 4500rpm)
Avoid high loads and high rpms on an engine that doesn't have the oil up to temp
Try not to sit on the rev limiter all day long. Tagging it occasionally is no biggie
No money shifts
03-01-2016, 04:53 PM
#26
Poseur
Rennlist Member
Rennlist Member
You can drive them nearly anyway you want. Porsche has engineered these things over the years to be much more tractable by drivers who don't drive as aggressively as 911 drivers used to drive. Quite simply, with so much displacement, there is no need to push these things to redline to get every ounce of power out of them. There's is plenty there to go around. Years ago we had to have a more aggressive gear-shifting routine to extract power out of a 911. Not so today.
03-02-2016, 10:48 AM
#27
RL Community Team
Rennlist Member
Rennlist Member
Since you quoted him, and then made your post, I just want to make sure I have this right...You're calling Quadcammer ignorant... the guy who has been here since '06 with over 10,000 posts, and one of the coolest cars in the 997 forum?
03-02-2016, 11:12 AM
#28
Rennlist Member
oh btw, if someone has a cool car, does it make them more wise to give advice?
03-02-2016, 11:30 AM
#29
RL Community Team
Rennlist Member
Rennlist Member
All good - just seems like there is more negativity in here lately, with "Does anyone else hate....(specific model or style)."
03-04-2016, 06:04 PM
#30
Chicagoans love to tailgate you at 90+ MPH as soon as outbound traffic back to the suburbs dissipates during the work week. Doesn't matter if they're driving a Dodge Caravan, a Toyota Prius, or any other kind of mundane commuting appliance, they'll tailgate you, even if you're not in the passing lane. Hell, sometimes they'll tailgate you when you're not making a pass fast enough in the passing lane, or even if the passing lane itself is clear for them to pass you.
Let's just say the 4,000-7,250 RPM range is useful for showing people the difference between a sports car and a mommymobile.
It's fun when a kid in a Lancer Evolution or a Subaru WRX STi, or other hot-hatch eggs me on to a quick sprint to the ton, though. Our gear ratios are well matched for these kinds of shenanigans.
Let's just say the 4,000-7,250 RPM range is useful for showing people the difference between a sports car and a mommymobile.
It's fun when a kid in a Lancer Evolution or a Subaru WRX STi, or other hot-hatch eggs me on to a quick sprint to the ton, though. Our gear ratios are well matched for these kinds of shenanigans.
Shortly into the drive a newer BMW 3 coupe appeared on my rear bumper. So I spent the next 30 miles showing him different ways of dropping him, letting him catch up and then doing it again. Straights, curves, hills, it didn't matter. I had too much fun....