Fastest you have taken your car?

I figured I would check out the top end a bit the other day. I did two runs on a farm road, very straight and decently long, but more importantly little traffic. The first run I hit 160 with the windows down. After 155 it took a bit to hit 160. I would have gone faster but the windows were killing my ears and I was running out of my braking zone. The second run was limited by traffic at the end and I hit 150 and have a pic. Posted it to my site. I told my friend who owns one of the older trubos that he had flipped out with bigger turbo etc. ala 90's not 993 and he said I was a lier and said to take another pic to prove it. What is the top speed that my car will hit with the windows up? I have a 996 99 c2 with mods listed below. I don't put the car into redline either so ??? <a href="http://hobbystage.net/porsche/media.cgi?site=spr&folder=*&id=1052847356-005891" target="_blank">http://hobbystage.net/porsche/media.cgi?site=spr&folder=*&id=1052847356-005891</a>

You're on 6,800rpms, I presume from the picture you post that you are still on 5th gear? Windows down will not let a C2 go more than 275km/hr (171mph). If you shut the windows you can get up to 282km/hr (175mph) I was able to do this speed and still had a couple of miles/hr I guess to go. On high speeds, it is not really relevant to change gears at redline. I noticed thru the Gtech-pro that the accelaration is better on 6th gear at above 6,000rpm rather than in 5th gear at the same speed.. Maybe it's coz at the end of the rpm range the torque curve drops down. Anyway, to answer your question: My top is 175mph (282km/hr) in a regular C2 99 My maximum as a passenger is 294km/hr (183mph) in Fadz's C4S.. Waz

Wow pretty impressive! I didn't think I had that much more room to go! do you think the c4s with more power and torque help it get there? I have seen that most ecu mods bump the torque up to the 3.6l 275 spec., and hp to around the same. I am thinking about taking the plunge and doing the gemballa ecu with throttle body.

A little over 150 mph she was still pulling hard. Carlos?!?!?!?......

Which ever your 996 might be, you certainly have enough power, talk less about the faboulous aerodynamics, to get to redline at 6th gear and eventual max speed. As you are well aware, maximum speed is a direct function of engine rpm vs gear ratio. The question is how fast can you get there. Surely the C4S with added power and torque (dunno about the drag coefficient) gets 'there' faster. I saw the km/hr adding much faster in Fadz's C4S than in my C2. I really dont know if the gear ratios in the C4S have been changed througout 3~4 years of 996's.. Certainly must have. Finally, after 250km/hr it is not really very funny. All you do is just hang on like if your life depended on it. I think the fun factor of a 996 (my experience of regular C2) lies in 3rd and fourth gears. Waz *not to mention the power slides of 2nd gear..*

I agree, I am not into seeking a higher top speed or getting their quicker, but just want overall improved performance and better response with the torque etc. I just happened to thread it into what I just did.

My best is 180mph on my '99 C4 , but just last week did 175mph passing an S-class in the highway <img src="http://members.rennlist.com/raptor/image001.jpg" alt=" - " />

Wife and I took delivery of our 01 C4 at the factory, 1600 miles on the tour of the castles of europe. Wife was too nervious for cruise control above 100MPH, cruised the autobahn mostly at about 130MPH, with bursts above but don't remember actually bothering to look down at the speedometer. The only thing that seemed to pass me, consistently, above ~150 was motorcycles, would you believe? Never felt the engine was straining at any time.

The fastest I took my 996 was 166mph with a slight uphill grade maybe 15 degrees. I was racing a 400hp+ modded S6 Audi and I had to get that fast before I could make some decent distance. (From 120mph to 150mph we were about 1 car length apart with me barely inching.) Have you ever gone so fast so long that slowing down to 85 mph makes you feel like you're only going 40mph? Made it from SF to LA (380miles) in 3.5 hours with 20 minute stop for refueling. Avg. speed 120 with occational bursts at 140 mph. The onboard CC said avg was 118mph with stop and go. I'm not as crazy as a fellow F355 owner who made it to LA in 2.5 hours avg. speed going 150mph! </font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Windows down will not let a C2 go more than 275km/hr (171mph). If you shut the windows you can get up to 282km/hr (175mph) I was able to do this speed and still had a couple of miles/hr I guess to go.</font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">you can bet it will take forever also to get to 170mph with all windows plus sunroof down...I got eaten up by a C5 with all three opened from 100mph to 130mph... When I closed all three, I had him for lunch.

I have reach 297km/h on the digital speedometer in my 996 -98 here�s a little movie from last week in germany, it�s bad quality but this time it reads 296km/h but you cant se it on the movie. This is on 19" wheels. <a href="http://attitude.mine.nu/bilder/LotusSamuel/temp/flyby.avi" target="_blank">http://attitude.mine.nu/bilder/LotusSamuel/temp/flyby.avi</a>

[QUOTE]Originally posted by Samuel: [QB]I have reach 297km/h on the digital speedometer in my 996 -98. This is on 19" wheels. Does it make that big difference with 19" wheels?

C4 Cab Tip 2002 3.6l max speed 288km/h and had to stop , End of road

176 mph on an isolated road. Ran out of straight road, heh-heh. Top speed runs are fun, but nothing like taking the Porsche out on a road course. Generating G's on short or long looping corners, blasting out from the apex down the straight.....all very exhilarating. Not to be a spoilsport, but, compared to that, top speed runs are boring.

Palting, who said they were straigh-line top speed runs on isolated roads? <img border="0" title="" alt="[Wink]" src="wink.gif" /> For me its the quickest way to get from one corner to the next in the highway coming back from work... not boring at all

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by Fadz: <strong>[QUOTE]Originally posted by Samuel: [QB]I have reach 297km/h on the digital speedometer in my 996 -98. This is on 19" wheels. Does it make that big difference with 19" wheels? </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Not unless the overall diameter has changed. If it is smaller than original, the speedo will show a higher than actual speed. If it is larger, the speedo will show a slower than actual. This is of course without any speedo recalibration.

01 996 c2 === 136

Sweet. I rutinely go through the canyons etc. I just have never taken the car that fast or really faster than 120 on the freeway, so it sounded like fun at the time

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica"> Does it make that big difference with 19" wheels? </font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">My 19" wheels are bigger than the 18" wheel so what i mean was that the real speed is faster with 19" than with 18" So 297km/h is very good for a 996 with 19" wheels. I�m very happy with the power of my engine. The first owner had done almost everything with the eninge so i guess i have at lest 330-340hp I�m new here. Sorry for my english!!

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by Samuel: <strong>My 19" wheels are bigger than the 18" wheel so what i mean was that the real speed is faster with 19" than with 18" ... </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Sam, You need to brush up on wheels/tire information! Check out the following link: <a href="http://www.tirerack.com/wheels/tech/plusone.htm" target="_blank">http://www.tirerack.com/wheels/tech/plusone.htm</a> BTW: the fastest I've had my 996 is 145mph without a cop behind me and 114 with <img border="0" title="" alt="[Eek!]" src="eek.gif" /> .

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by pete01_996: <strong> </font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by Samuel: <strong>My 19" wheels are bigger than the 18" wheel so what i mean was that the real speed is faster with 19" than with 18" ... </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Sam, You need to brush up on wheels/tire information! Check out the following link: <a href="http://www.tirerack.com/wheels/tech/plusone.htm" target="_blank">http://www.tirerack.com/wheels/tech/plusone.htm</a> </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Do you think i�m stupid or what? <img border="0" title="" alt="[Wink]" src="wink.gif" /> My 19" 275/30 wheels have a diameter of 25,6" and my 18" 285/30 only 24,8" <img border="0" alt="[blabla]" title="" src="graemlins/a_smil17.gif" /> That makes my 19" wheels 3,2% bigger than the 18" 297km/h + 3,2% = 306,5km/h Maybe i�m stupid?! <img border="0" alt="[icon107]" title="" src="graemlins/icon107.gif" />

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by Carlos from Spain: <strong>Palting, who said they were straigh-line top speed runs on isolated roads? <img border="0" title="" alt="[Wink]" src="wink.gif" /> For me its the quickest way to get from one corner to the next in the highway coming back from work... not boring at all </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Carlos, no need to get defensive. I never said all top speed runs are on isolated roads, or that they are not fun for others. You can do top speed runs in autobahns there, or interstates here. It can be fun. But Porsche is so much more than just mashing the pedal to the metal in between corners. In a road course with complex series of corners, there is threshold braking, then trail braking as you control the rear slide around the apex, drift under perfect control, then feel the power of the car as you finally mash the pedal at exit. All done at or close to the limits of braking, traction, suspension and driver ability. This is where you appreciate the soul of a Porsche. This is what Porsches are made for. Any Porsche owner can get into it. In a road course, the straights are just for getting through as quickly as you can while you relax and take deep breaths, check your belts, check gauges and enjoy the scenery as you prepare for the real challenge coming up.

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by Samuel: <strong>Do you think i�m stupid or what? <img border="0" title="" alt="[Wink]" src="wink.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">No not at all! Peace brother Your numbers look spot on to me! Sorry I must have misunderstood you.

170mph last weekend in my GT2 and it was still pulling....

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by Palting: [QB Carlos, no need to get defensive. I never said all top speed runs are on isolated roads, or that they are not fun for others. You can do top speed runs in autobahns there, or interstates here. It can be fun. But Porsche is so much more than just mashing the pedal to the metal in between corners. In a road course with complex series of corners, there is threshold braking, then trail braking as you control the rear slide around the apex, drift under perfect control, then feel the power of the car as you finally mash the pedal at exit. All done at or close to the limits of braking, traction, suspension and driver ability. This is where you appreciate the soul of a Porsche. This is what Porsches are made for. Any Porsche owner can get into it. In a road course, the straights are just for getting through as quickly as you can while you relax and take deep breaths, check your belts, check gauges and enjoy the scenery as you prepare for the real challenge coming up.[/QB]</font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Palting, I was just jocking No need to explain all since they my feelings exactly, thats why I don't care much for staright-line drag races or top speed runs on isolated roads <img border="0" alt="[cheers]" title="" src="graemlins/beerchug.gif" />

In my Turbo, with a pax and luggage: <img src="http://www.sw2.ch/pics/313kmh.jpg" alt=" - " /> Greetings, --Pierre

That is sweet. Regarding the other post, trail braking in a rear engine car? Shame on you! If you are that big of an enthusiast and wish to tell proper form you should know that you never, and I mean never, trail brake in a rear engine car, even a 996 as it is a forgiving and understeering one at that in stock form. Come on- Were all friends here.

313Km/h is 195 MPH one word, <img border="0" title="" alt="[Eek!]" src="eek.gif" /> DAMN <img border="0" title="" alt="[Eek!]" src="eek.gif" /> 294Km/h is 183 MPH, 297Km/h is 185 MPH, I've got up to 115 in my 914 <img border="0" alt="[crying]" title="" src="graemlins/crying.gif" /> <img border="0" alt="[crying]" title="" src="graemlins/crying.gif" /> But the fastest is 1300MPH F/A-18D Hornet.

F/A-18D??? Wow! Cool!... I've made a flight in an old Hunter accross the Swiss Alps: amazing! Not that fast, but 850 km/h very near to the ground in a small valley is impressive to say the least... <a href="http://www.amicidellhunter.ch" target="_blank">details here</a> Greetings, --Pierre <img src="http://www.amicidellhunter.ch/gallerie1/jr02.jpg" alt=" - " />

Sean, you can trail brake a rear engined car. In fact, that is sometimes the only way to rotate a 911. Here's a two-pic series to illustrate: Trail brake, car rotating, right rear wheel lift. <img src="http://members.rennlist.com/palting/173D7748sm.JPG" alt=" - " /> Back on gas, rear end back down. You can either get more rotation, drift, or plant the rear by modulating the gas. <img src="http://members.rennlist.com/palting/173D7749sm.JPG" alt=" - " /> Here's is one flat out, pedal to the metal, checking gauges, chatting with the instructor, enjoying the scenery. <img src="http://members.rennlist.com/palting/173D5044sm.JPG" alt=" - " /> What you cannot do in a 911 is power oversteer. Unless you have gobs of power as in Pierre's TT or in a GT2 or in the RUF Yellow Bird. Just another friendly opinion .

For autocross trail braking my 993 helps so much with rotating the car. I tried power oversteering it, but there is not enough HP and too much exit grip at the rear, car just pushes badly at that point. Trail braking is something that I am still learning how to do better, while it feels really strange to left foot brake.....

Those are great pics Palting. Can someone explain trail braking? TIA

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by Rob in WA: <strong>Those are great pics Palting. Can someone explain trail braking? TIA</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">I agree Rob, great pictures and great pilot, can someone explain trail braking please? <img border="0" alt="[jumper]" title="" src="graemlins/jumper.gif" />

Rob, Trail-braking is a subtle driving technique that allows for later braking and increased corner entry speed. The classical technique is to complete braking before turn-in. This is a safer, easier technique for the driver because it separates traction management into two phases, braking and cornering, so the driver doesn't have to chew gum and walk at the same time, as it were. With the trail-braking technique, the driver carries braking into the corner, gradually trailing off the brakes while winding in the steering. Since braking continues in the corner, it's possible to delay its onset in the preceding straight braking zone. Since it eliminates the sub-optimal moments between the ramp-down from braking and the ramp-up to limit cornering by overlapping them, entry speeds can be higher. The combination of these two effects means that the advantage of later braking is carried through the first part of the corner. In many ways, this is the flip side to corner exit, where any speed advantage due to superior technique gets carried all the way down the ensuing straight. The magnitude of the trail-braking effect is much smaller, though: perhaps a car length or two for a typical corner. Done consistently, though, it can accumulate to whole seconds over a course. go to for the rest of his explanation... <a href="http://www.getfaster.com/Techtips/Physics23.html" target="_blank">http://www.getfaster.com/Techtips/Physics23.html</a>

Thanks P-Zen. So in what situations would you trail brake vs. using heel and toe?

heel and toe is a method to optimize engine rpms with down shift gear ratio without losing any braking advantage that you may be choosing at the time...you can utilize both techniques (i.e. heel and toe while downshifting (cause you want to complete your downshift prior to entering corner) but trail braking is used in relationship to your braking to the corner, as in late) the two techniques are not replacements for the other necessarily. just think of trail braking as braking later, heel and toe is shifting smoother while braking. some peeps on here won't like my simplified perspective, but we do need detail oriented people for some things. do a search on the Racing forum for more detailed discussions of trail braking. good luck

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by chris walrod: <strong>... Trail braking is something that I am still learning how to do better, while it feels really strange to left foot brake.....</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Can't trail braking be done with right foot only? In what situation would you want to use the left foot? Maybe to make transition to gas faster/smoother??

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by SPR: <strong>That is sweet. Regarding the other post, trail braking in a rear engine car? Shame on you! If you are that big of an enthusiast and wish to tell proper form you should know that you never, and I mean never, trail brake in a rear engine car, even a 996 as it is a forgiving and understeering one at that in stock form. </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Please, please, please post this in the Racing Forum. Please?

Uh, I dunno about that. I have been trained professionally thanks for the beginners breifing. Try your technique in anything that has a traditional temprement, i.e. my sports 2k. Trail braking is for front engine rwd/fwd. Read any driving book on the subject. I will end it there. Have fun

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by SPR: <strong>Uh, I dunno about that. I have been trained professionally thanks for the beginners breifing. Try your technique in anything that has a traditional temprement, i.e. my sports 2k. Trail braking is for front engine rwd/fwd. Read any driving book on the subject. I will end it there. Have fun </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">LOL!! OK <img border="0" alt="[byebye]" title="" src="graemlins/wave.gif" /> I agree this discussion is best at the racing forum where the pros roam. Apologies for hijacking the thread.