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Registered
Join Date: Jun 2007
Posts: 62
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Proper RPM range for daily driving?
I am curious what other Porsche owners consider to be the proper RPM range for daily driving of their 911's - namely, what RPM do you cruise at around town and on the freeway, and where do you take the RPMs before shifting? I notice that I typically cruise at around 3000 - 3500 RPM and shift at a bit above 4000 RPM. Does Porsche have a recommendation for this?
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86 Carrera Coupe
Join Date: Apr 2008
Location: Holyoke, Massachusetts (western end of state)
Posts: 425
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2700 to 4000. Shift between 3500 and 4000. Unless of course I'm doing the spirited drive thing.
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You don't say what year car or what engine you have, so it's a little vague. You don't want to lug these engines. When accelerating, feel free to take it to near red line once in awhile. The engine needs to operate throughout the entire RPM range. For just cruising around, your RPM looks OK, but downshift before you accelerate hard.
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John Snodgrass 1973 Porsche 911 "Barney" (race car for sale) 2008 Nissan Maxima - Daily Driver 1999 F350 Diesel Crew Cab - Tow Beast 1990 Airstream 36' Land Yacht - Home Away From Home |
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Registered
Join Date: Jun 2007
Posts: 62
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Good point, mine is a '79 911 SC.
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Wider is Better
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I cruise around town at about 3500 rpm. It works out very nicely as 3500 rpm is 25mph in 2nd gear, 45 mph in 3rd gear and 55 mph in 4th gear. I shift at 5000 - 5500. This allows for very responsive driving. I checked the mileage a couple of times for the difference between 3000 and 3500 when cruising in town, and it as 17.8 mpg if I shifted to keep the rpms low at 3000 rpms and shifted at about 3500, and 17.5 cruising at 3500 and shifting at 5000.
My first Porsche was an SC and I followed the same protocol. The car seemed to like it.
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Wider is Better |
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I stay above 3K RPMs,..paying no attention to gas mileage concerns.
Shifting/RPMs? Well,..that's related to mood.....and applied accordingly. Never lugging her (that's 4-sure...) Best, Doyle
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Recording Engineer, Administrator and Entrepeneur Designer of Fine Studios, Tube Amplifier Guru 1989 Porsche 911 Carrera Coupe 25th Anniversary Special Edition Middle Georgia |
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Recreational User
Join Date: Mar 2004
Location: A Mile High
Posts: 4,159
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There aren't any official recommendations on cruising RPM. Drive in any gear you like, but don't lug the engine. There are two things to keep in mind. The SC, like the Carreras that came after, puts out pretty good torque below 3k RPM's, so there's no need to keep the revs way up high like the earlier cars. But you'll want to do it anyway to keep both you and the engine happy.
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Author of "101 Projects"
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Depends upon which mood I'm in. On the highway, if I'm trying to conserve gas, I keep the RPMs as low as possible. Around town, I typically shift around 5K or a bit higher. The power band for my engine just starts at 3K.
-Wayne
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Wayne R. Dempsey, Founder, Pelican Parts Inc., and Author of: 101 Projects for Your BMW 3-Series • 101 Projects for Your Porsche 911 • How to Rebuild & Modify Porsche 911 Engines • 101 Projects for Your Porsche Boxster & Cayman • 101 Projects for Your Porsche 996 / 997 • SPEED READ: Porsche 911 Check out our new site: Dempsey Motorsports |
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Registered
Join Date: Oct 2006
Location: Mt Pleasant, SC
Posts: 1,167
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I try to stay between 3 - 4.5K around town, shift 5 - 6K. Don't even consider gas mileage unless I'm on the hwy on a long trip (400+ miles).
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Tim 1986 930 Gone:71,2,4 914's, 70T, 71T(RS),77S |
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