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YOUR RESEARCHNow that I actually have "driving weather"....
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Running the tack up to 4k or 5k when shifting....sure, but not driving at a constant 4k rpm.
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I saw the Coochas 993 video from the factory, showing how each 993 engine was run AT REDLINE all day long (or something like that) to test race worthyness.
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I saw the Coochas 993 video from the factory, showing how each 993 engine was run AT REDLINE all day long (or something like that) to test race worthyness.
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Here's a question for those with more (enviable)!! experience behind the wheel....
On a test drive, my P salesman said "drive it at 4,000 RPM"....is this what
you all do??? I would think for long highway drives, 80 MPH in 6th gear at
a little under 3k RPM would be easier on the car?? no????
How do I drive this thing????
i usually have it around 3-3500 rpm most of the time. that's my nod toward being frugal with the gas.
on the highway (if i can find a stretch smooth enough on these terrible SE michigan roads) i usually cruise in 6th around 80-85 mph around 2800-3000 rpm.
of course i've only had the car for 5 weeks, so who knows what the summer will bring?
On a long highway drive, 4K rpm will just eat gas and wear your engine. I keep it under 3k on the h-way cruise. Now on a spirited twisty drive (most of what I do), I hit the rev limiter quite occasionally.......keeps the engine clean.....
what kinda idiot likes to drive at 4k rpm on the fwy? once warmed up, i regularly shift at 4Krpm to hear that pse growl and it's just a good rpm to hit. shifting at 3k is too low. 5k is... a bit spirited.
this is all assuming regular in town driving stylez.
Highway driving I keep it as low as I can unless making a move
Around town 3K is a nice range for sound and responsiveness.
Holding 4K for long periods of time is to high 4/me. It is when it comes alive though
The idea that it will wear your engine is a bit over-the-top. Like saying exercise wears out your heart. Sure, in theory, but believe me: piston and cylinder wall wear is the last thing you need to worry about with this engine. I would point out that it says right in the manual that even a stone cold engine can be shifted as high as 4,500 rpm. The are built to rev. High rpms is where they're most efficient.
Given the design of this engine, I would be much more worried about the effects of lugging it than I would about revving it too high. Much more.
Why bother running at a constant 4K or any target RPM unless you have a specific problem you're testing? On the highway why would you not be in the highest gear you can be unless passing (unless like me you've been trying to burn off a tank of gas as fast as possible!)
Definitely give it some throttle, wind it up when you can and do it often, but why hold it at constant middling rpm when cruising?
Bruce, I think it said keep it under 4K on a cold start.
I keep it under 3K just cuz I'm special like that.
For me, holding it at 4K on the hwy is a great way to burn gas. That's it. It's too loud, too. Call me old.
just came back in from another quick jaunt, just for the hell of it I kept it around 4K on the FDR and as best as I could around town. My gosh that's no way to drive on the street, must be smack dab in the middle of the steepest part of the variocam+ ramp. But it does sound nice.
Maybe that's why the salesman wanted me to drive at 4k rpm.....sales pitch sound effects!!!! Seriously....I got the impression that this was some sort of
Porsche standard....like from a salesman driving school or something???
I think down shifting to 4k and then nailing it is a good way to hear/feel the engine! Maybe that's what the sales guy was talking about?
The engine loves to rev and be revved, but not held at a moderately high 4k for no reason at all.
Ha! Is that what that red area on the tach is for?
I saw the Coochas 993 video from the factory, showing how each 993 engine was run AT REDLINE all day long (or something like that) to test race worthyness.
hehehe
In all seriousness, I, like BruceP, also believe that it may be detrimental to the engine if it was not allowed to reach the higher rpms regularly. By "higher rpms" I do NOT mean just 5k.
...plus it's fun...
Do you have the link handy for that video?
Porsche (at least used to) tests racing motor designs at full load for 24 hours, because they had to withstand that in a 24-hour race. The story goes that the 917 motor wore out the dyno.
Bill
Here is a link to the page - you have to scroll down to the 993 videos and choose the "993 - The Latest Evolution" video. 20 minutes of drooling!
http://coochas.com/porsche/911vids.html
I disagree.
I've driven for very long stretches at 100mph+, and the tach is over 4k - and the car loves it. It's made to drive on the autobahn all day, so no big deal.
In each of my several trips across the country, I've set the cruise at anywhere between 90 and 100 and just cruised along. This is in a car with well over 100k on the odometer and it's perfectly healthy.
Morale of the story - don't be scared of 4k and above - the engine was made for it.
Agreed completely. Driven gingerly until warm, then aggressively thereafter. I definitely NEVER lug, though many of my friends do. Cretins. Man I love the sound of the engine when the car is revved up.
The Middle East is not the only place America gets its oil. Would it make you feel better to think of the gas in your car as being from Venezuela or Alberta, Canada?
I have always been from the school of keeping the revs down low as possible without getting input shaft chatter, that is your true lugging point IMO.
To say that keeping the revs high for any engine is ridiculous in my eyes (as long as it is not lugging).
I think that if Porsche wanted us to rev the engine everywhere you drove, they would of programmed the Tiptronic to do so, it doesn't.
It goes straight to OD by 35 MPH. That is roughly 1500 + or - RPM by what I remember.
Lugging is really, IMO, bad for air-cooled engines, due to not receiving enough jug airflow. Water-cooled, I would not be concerned about.
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