I would imagine that it wouldn't be "too" hard to get to 200mph in the Z. If you were to go the F/I route and then put in a lower back-end it could be possible. But if I wanted to go that fast and look good, I would get a Viper, 911, Z06, GT, etc...


All hypothetical. I have never F/Ied a car and have no idea how the Z would respond under these conditions. Although, in theory it would work

 

not so true. i was a little scared cause i just got the car exactly one week ago. but my stock 03 6spd just hit 151, and it was fairly easy. 140-151 was just like 120-130 and 130-140 i could have gone more. but i want to take it easy for now.

 

Hey if you did hit 150+ that fast, i'm really impressed. I just read a few posts of what people were saying..maybe for them 'sloooow' might mean 'fast' for someone like me..since i'm used to a much much slower vehicle.
But its good to hear the Z has great top end speed!

 

So what is the fastest the automatic Z can go?
Peace!

 

i know the feeling. maybe its because my old 4cyl accord coupe would only do 140 and it took 3 days to get there

 

FACT:
they are electronically limited to 250kmh (155mph) Ignore what the speedo, electronic or analogue says, they are NOT accurate, especially at that speed.

NOT SO FACT:
I have heard from a number of sources that de-limited it will do 167mph (Manual gearbox, we don't have the auto here thankfully)

 

I've hit my 155 limit 4 times... and it isn't "slow" it still pulls to 155 in 6th gear, then just holds it there. Maybe the speedos are inacurate, who knows.. but it definitely cuts power to the point where you stop pulling and sit right at 155. I held it there for about 30 second the other day racing a C5 vette. He finally passed me, of course he wasn't stock either but I think even stock he coulda passed me because they can exceed 155. I think he said it was limited to around 162 before he chipped/flashed his C5.

 

I've done 156 according to the digital speedo but I really doubt its accuracy being as I did it with my windows open and sunroof open. Granted I do have a more aerodynamic body kit than stock but I wouldnt put much on it if I were a betting man.

 

Going on a slight downhill would help the Z go past 155 as well. I hit 159mph on a slight downhill.

 

i topped mine out the other day at 155

 

Auto Auto Auto?
Please
Peace!

 

Wow, this thread is 2 1/2 years old.

 

yeh.... i love repetition !!!

 

C5's are not limited by electronics....Its drag limited to around 175-176...The C5 Z06 is gear limited to around 173..shorter gears and slighly worse aero means a little slower on the top end than the regular coupe..But of course it'll get to its top speed waaay quicker than the regular coupe.

I think the 350z has the power to go deep in the 160's unlimited...

 

For the untrained. If you change the tire size diameter or profile you change the rolling radius of the tire which changes the number of times +/- that it rotates in a mile. Therefore the speed reading of your odometer would change. The Z should cut out when it electronically so while there could be a problem with the electronics I might suspect BS on the claim. In regards to trying to calculate top speed based on "3000RPM is about 80MPH in 6th. so 6000RPM would be 160" is totally incorrect. It would be correct if this could be done in a vacuum negating wind resistance. The 350z while a very streamline car with a very low amount of drag, still has wind resistance. The faster you go the harder it is to go faster. Do this to check, run 30 mph in 6th gear and and then run 90, then compare the rpms. The ratio will not be the same.

 

The Z actually has some of the best aerodynamics of any cars out there (.29 Cd for the Z, Vette .30, GT3 .35). What limits us from going 176, despite low drag ratios, is lack of power.

 

Actually its the C5 coupe with the .29 cd...The Z is .30...That chopped back glass treatment to reduce weight on the Z06 is the cause of the slight increase in cd...But the gearing is what really limits the Z06 from having a higher top speed than the coupe despite it having more power...But you are right it has some of the best cd of cars out now, much better than the Viper/GT3 although them Snakes can make so much power they just beat down the aerodynamic wall..

 

I hit 155mph and mine is an auto. I was in 5th gear and it was at 5800rpm. I am sure it would have gone faster but I backed down and this was done with me and a passanger with lots of things in the back. I was surprised how well it pulled given the extra weight. Keep in mind my Z isn't stock.

 

^^^^LOL we can see that^^^^

 

I thought I read somewhere that the drag coefficient for the base Z was .30, and .29 for Enthusiast, Touring, etc...maybe things changed..i dunno