Parnelli

Prolly a weird question to most of you, but I always wondered. It seems the consensus is to keep it under 3,000 RPM's for the 1st 10 minutes or so (don't know if that is accurate or not). Obviously I am not talking about red-lining it at 7K RPM's for extended highway driving, I am simply wondering if once warmed up it is OK to get up to 4,000+ RPM's for a drive that has more torque (other than just passing other cars of course). IE for periods of minutes not seconds.

Any thoughts would be appreciated. I feel like I am "under-driving" the car by maxing out around 3200 RPM's (other than passing and on -ramps, etc).

LexVan

Keep it under 4,000 RPM until you get the blip on the oil temp gauge. Then you are good to go. If you are always cruising around at 3-4,000 RPM you should have bought an NA 993 because you're barley ever getting on boost.

Quadcammer

well, to be clear, just driving around, i tend to be in the 2000rpm to 3000rpm range. When i want to pass or accelerate more quickly, i simply downshift. There is absolutely zero purpose to cruising around at 4k rpm or higher. If out in a spirited run in the mountains, sure, the revs would be kept higher.

for highway cruising, dump it into the high gear.

sonny1

6200K.

Mike J

I now you have a great engine, but 6,200,000 RPM?

Anyways, I typically cruise around 2800-3000 RPM, I think closer to 2000 RPM works, but is a bit luggy, and 3500+ is not really required. If I want to boot it, 2800 is at the bottom of the power band, so it useful.

Cheers,

Mike

Johnny_law

These threads are actually very useful for newbies like myself. My mechanic told me to keep it around 3k rpm most of the time. He said it's usually not a good idea to lug them for long periods.

On another note, mine rev's at 2400rpm @ 70mph (112kph) in 6th gear sound about right? Seemed a bit high based on the chart in the owners manual.

Mike J

I go by feel - you can feel if the engine is breathing easily or being lugged. Its hard to give a specific RPM because it depends on the loading on the car - speed (ie. wind), slope, etc.

For me, I "feel" that 2400 RPM is right on the edge of feeling like I am lugging the car - OK for cruising, but these cars like to rev, and it does feel boggy.

I rarely use 6th on the highway if I am within the speed limits....

Cheers,

Mike

doublecabmel

I'll never forget reading the owners manual in my dads 1986 911 turbo. I just got my license and I wanted to know everything about the car. I remember the sentence, "make sure to take your turbo to redline at least once every time you drive it to clean out the wastegates." Fast forward about 10 years and my tt gets the same advise. These cars love to spool up- of course conditions permitting with proper cool down

sonny1

Sorry,what I meant was my shifting point for "spirited driving",(as OP asked how high rpm's), 7K road racing mode, 8K drag racing mode., steady cruising 3K to 4K, it all depends,it is good to vary the revs while cruising, cheers.

OverBoosted28

The first one is a still from a vid of an upshift.

After initial warm up you should be good to go, within reason. After you are sure EVERYTHING is up to normal temp. then you can put the coals to it.

DoninDen

Wow that's cool!

dombeau

After reading all this, I had to put it to the test! You guys inspired my tuesday night drive. Air was cold and the city quiet.

@Johnny, same thing for me 2500rpm-115km/h

"make sure to take your turbo to redline at least once every time you drive it to clean out the wastegates.".... checked!

Question: went for gas. Restarted the car but... missed the ignition sequence, had to restart and the onboard computer was totally dark! Restarted the car 5 minutes later, everything back to normal. Does it happen to you sometimes?

Johnny_law

Sorry, can't really say, I haven't had my car long enough to tell so can't speak to the onboard computer backlight. However a car I almost bought last summer had that same light out and was the condition was found during the PPI. I didn't follow up with the car due to another issue that came up but they where going to send out or swap out the tach.

Johnny_law

Wowza! Haven't gone there yet... On the speedometer side of things... Still a bit timid.

Tacet-Conundrum

You're watching the rpm all that much?

I dunno, after the first week or two I can just hear it or feel where the engine is at. Know most of us are like that too. I know its a bitch to pay a mechanic to replace those old 993 turbos. Ever wondef why sharkworks don't work on 993s?