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    Sport button & clutch wear

    Just wondering if others using the sport button have noticed that launching smoothly from a stop with sport mode activated is harder on the clutch?

    I have driven nothing but manual cars my entire life and I pride myself on the fact that I have never needed to replace a clutch, even on old 911 with hundreds or thousands of miles. That said, I find it difficult to not let the clutch slip excessively (a bit) when using the sport mode since the throttle is a little too agressive to keep the revs down on launch (I am talking smooth start not quick get-away). As a result I find myself not using sport mode as much, at least not in town with a lot of stop-and-go traffic.

    Other than that I am a big fan of the Sport Button, although like many others, I turn off the sport PASM most of the time as soon as I hit the sport button.

    Re: Sport button & clutch wear

    Quote:
    Leawood911 said:
    As a result I find myself not using sport mode as much, at least not in town with a lot of stop-and-go traffic.



    Well, those aren't really the driving conditions that the sport mode are meant for, I would have thought?

    Re: Sport button & clutch wear

    One nice thing about the "S" clutch is that it's self adjusting. So at least you don't have to worry about that as you wear the plate down.

    Re: Sport button & clutch wear

    The first time I used the Sport mode from a start, the smell of burning clutch is still embedded in my memory.
    I rarely do it from a start any more.

    Re: Sport button & clutch wear

    You have to get used to one throtle map or the other. Personally, I like the non-sport throtle map, but wish I could combine that with the less intursive PSM settings . . .

    For me, sport chrono was a waste.

    Re: Sport button & clutch wear

    I'm very gentle with the accelerator when driving around town. I use the clutch very sparingly too. So, when I'm in Sport Chrono (normal), I even get some slight jerkiness. But I find this jerkiness is less when I'm using Sport Chrono (sport on). I also never have a burnt clutch smell.

    It's my first 911 - indeed my first manual car ever - so I hope I'm doing this right or I'm going to have a premature clutch replacement bill!!

    Re: Sport button & clutch wear

    Quote:
    easy_rider911 said:


    It's my first 911 - indeed my first manual car ever - so I hope I'm doing this right or I'm going to have a premature clutch replacement bill!!



    Just thought I'd mention this. Forgive me if you guys know this.

    When accelerating around town from a stop try to "rev match" the clutch with the tranny. I have rev match in quotes because it's impossible to do this literally. What I'm trying to get across it you should have nearly zero slip of the clutch when starting off the line in normal calm driving. Try it.

    Lots of people, especially kids,rev that engine up pretty high and then slowly let the clutch out. Except for learners it's NOT necessary!

    What I'm saying is you don't have to rev the engine at all (or so it seems) to get the car going by letting the clutch out.

    Try to incorporate this suggestion, will make clutch happy for a long time.


    Re: Sport button & clutch wear

    Thanks for the advice. I usually pull away at about 700rpm. It's sometimes 900rpm if I'm listening to loud music and can't hear the engine at tick over while I'm at the lights.

    Re: Sport button & clutch wear

    Quote:
    easy_rider911 said:
    Thanks for the advice. I usually pull away at about 700rpm. It's sometimes 900rpm if I'm listening to loud music and can't hear the engine at tick over while I'm at the lights.



    I guess the main thing is not to let the clutch _obviously_ slip when starting from a stop. Works for me.

    Re: Sport button & clutch wear

    Quote:
    MMD said:
    Quote:
    easy_rider911 said:
    Thanks for the advice. I usually pull away at about 700rpm. It's sometimes 900rpm if I'm listening to loud music and can't hear the engine at tick over while I'm at the lights.



    I guess the main thing is not to let the clutch _obviously_ slip when starting from a stop. Works for me.



    And, of course, once you are moving there is no excuse for slipping the clutch. Slipping the clutch going from 5-6 for instance is much much harder on the clutch than the minor slip required to move from a stop.

    Re: Sport button & clutch wear

    I drive with sport-mode "on", pasm "normal", 100% of the time. I prefer the throttle map, and I'm perfectly O.K. with the reality of "tricking" myself that I've got a more powerful car under-foot. I wish it WAS more powerful, I'll take all the smoke & mirrors I can get, perception is everything.

    And, I've got to be honest here. If you're having clutch engagement issues in sport, it's not the throttle map, it's you... I find the car, even in sport mode, is a kitten, and engaging the clutch from a stop is simple to do quickly and cleanly without even disturbing the tach needle from idle.

    You just need to work on your dancing I'm afraid. Even with Sport mode on, these cars are so hyper-controllable, flexible and user-friendly, that you can't use the button as an excuse for zinging the clutch from a light.

    I know this post seems smug and preachy like I'm some sort of super-driver... so punch me... but you need practice. You should know the relationship between throttle and clutch on your car intuitively, without looking at the tach, and without listening to the motor.

    Spending time behind the wheel of numerous different cars also helps, and that's admittedly an advantage I've had my entire life, driving something different and sometimes archaic on an almost daily basis. If anything, driving my 997 has been screwing up my skills with other cars, because it's so easy to drive smooth, I in-turn get sloppy.

    I drove my employee's new C6 6-speed a few weeks back, and I was having a bear of a time with the clutch, because the driveline was so "right now" compared to the Porsche, and with the immediate low-torque, we were swallowing our tongues and leaving black-marks on my clumsy upshifts. My Porsche is dumbing me down!!!

    Re: Sport button & clutch wear

    I would always keep the car in sport mode, and with past cars that I have owned, I would pride myself with perfect launches, and perfect shifts. The first and last time I got on the P, I was in third gear and traveled only 50 feet. In the confusion, I immediately buried my foot into the clutch, as the smell entered into the cabin. I theorized that PCCB's/anti-spin easily over powered the clutch. Every spirited launch thereafter, kept me mindful to the potential of clutch slippage. If there was more clutch feedback from the P, I would have been able to dance the clutch slippage to only a few hundred rpm's. I guess they don't do drag racing in Germany.

    jb

    Re: Sport button & clutch wear

    I've never noticed any problem with burning the clutch in sport mode, but then I usually shift quickly, with a fast depression and re-engagement of the clutch.

    If you are having trouble getting you're clutch work right and unless you're trying to "beat someone off the line," then engage the sport mode only after you're moving. You shouldn't have any problems with moving upshifts and downshifts.

    Jim

    Re: Sport button & clutch wear

    Some interesting guidance here on clutch care and break in.

    http://answers.google.com/answers/threadview?id=776684

    Some interesting info about clutches here:

    http://www.indiacar.com/infobank/clutch.htm

    Re: Sport button & clutch wear

    Quote:
    69bossnine said:
    I find the car, even in sport mode, is a kitten... Even with Sport mode on, these cars are so hyper-controllable, flexible and user-friendly... You should know the relationship between throttle and clutch on your car intuitively, without looking at the tach, and without listening to the motor.



    Yep, I couldn't agree more I find Sport Chrono (sport mode) very easy to drive even in traffic in town. I was trying to explain earlier that, if anything, I err towards stalling (when pulling away from a standstill) due to insufficient gas and clutch rather than letting the clutch slip through revving too much when letting the clutch out.

    I passed my driving test back in 1988 on a manual car and have driven automatics till Nov 2006. I should be the least accomplished person here! But, the 911 flatters me...

    I have to say though that I never stall (if the music is off) but that I do very occasionally stall from a standstill if the music is pretty loud. But even this is happening less and less.

    Anyway, I've done about 2300 miles now so I should have got the hang of this by now

    Still haven't done a heel-toe downshift yet. Feel afraid of experimenting with this car. Next time I get a rental car, I'm going to abuse it big time!!

     
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