gatman

My GT3 just arrived last week, and go to Le Mans tomorrow !
can't wait more...

03-turbo911

gatman, congratulations. Looking forward to your impressions in Le Mans.

Jean

Somehow I missed this thread.. Khalid..CONGRATULATIONS! Looking forward to see you soon. The car in black is gorgeous.

Give yourself a couple of weeks, and then switch to some better (sportier) alignment settings, it will be transformed, yet as drivable on the street.

As to the happy tail , I hear you! It might have more to do with cold MPSCs though, careful with them.
Check out this one, the guy (with the cameraman) in the back missed his apex and went straight into the gravel while watching in full brake mode

03-turbo911

Jean, thanks buddy. As they say, better late than never.

What kind if settings were you guys running?

Tires weren't cold. I lost concentration chatting away and nearly spun out.

LOL love this picture.

gatman

just see it > https://rennlist.com/forums/997-gt2-gt3-forum/344571-le-mans-with-my-new-gt3.html

pdxjim

Soory for the naive question, but do all of the gt-3's and RS's have limited slip?

Carrera GT

I saw the thread title and assumed it was you posting ... : )

Carrera GT

40:40 mechanical LSD and electronic TC (which would require two pages to describe but most interestly includes the feature of blipping the throttle to prevent rear wheel lock during a choppy down-shift ... not that it "rev matches" the shift somehow, it just accelerates the engine when it detects the rears turning to slowly. How it figures all this out at the same time as left and right rear wheel braking etc. etc. I would love to read the details ...

Carrera GT

It's probably a bit obscure to post here, but I should add, for anyone with the means to take their new 911 directly to the track, at least have a trusted tech "nut and bolt" the car for any obvious safety issues. Something that might leave you stranded on the side of a country road could be a major calamity on the track at higher speeds and higher corner loads.

mooty

LOL, i think you are on track as much, if not more, than i do this year. only had 9 days in 2007 so far.

frayed

I think that's MSR, engine drag control, right? I wonder if it simply gases the car if it detects imminent lockup through the rear wheel ABS sensors when you aren't on the gas or on the gas hard enough and aren't on the brakes.

Anyway, since TC can actually add throttle (rather than on archaic systems that could only take throttle away), it would seem then that throttle lift oversteer would be corrected as well.

I'll experiment tomorrow.

Carrera GT

2007

03-turbo911

Good advice! I was planning on taking it in before the next track day but might as well have them go over it for peace of mind's sake.

Carrera GT

It takes a lot of experimentation and not something you can explore on the street by any means.

I chose a couple of sections on the track where I could feed in vehicle attitude, steering, clutch, brake inputs at various speeds and various pre-state and post-state deceleration.

My notes suggested afterwards that it is most "intrusive" when there's most at risk (higher speeds, faster cornering, more steering input, more abrupt clutch engagement.) In short, I came to the conclusion that it was mostly trying to counteract the most common of mistakes (fumbled down-shift into a turn causing the rear to come around then the driver unwittingly lifts.)

Detecting its effect was not like feeling a pulse of engine thrust or anything so deliberate. It's more like comparing one lap to the previous lap and noticing the tail not willing to come as far wide. Pretty subtle. Nothing that I found distracting or that took me out of the equation so to speak. Overall, I find the whole TC thing almost invisible on the track and yet usefully relaxing on the street, especially with worn Sport Cups and some recent wet weather, since I have a winding country road for the last eight miles to my house -- just hitting the rears on some paint or wind-fallen branch and wet leaves could be a really bad deal.

Carrera GT

Definitely worth it and should be free if the dealer is good to you.

I had it thrown on the rack just to see what the "before" numbers were, which is an ideal time for the tech with a good, experienced eye to look for anything out of place. The PDI won't catch this kind of thing in all cases. I haven't heard of anyone coming to grief but I have seen many cars where things like having the sway bars on the wrong settings or loose or the rear suspension alignment in a very dangerous setting for the 996 GT3 could well have led to another of those many "996 snap oversteer" reports that came in the early days of the MkII.