Top Speeds in Different Gears (6MT)

GTRFAN · 10-23-2009, 09:14 PM

Quote:

Originally Posted by 370Zsteve

Resistance from the air will flatten those numbers as speed increases in 5th and 6th. The Z has nice drag coefficient spec, nonetheless physics will take over eventually.

My limited Physics knowledge says that at a certain point, the car will not be able to accellerate any further as the wind resistance will be too great, so it will never see the 7500 redline in 6th. It will just sit on a lower rpm and be unable to push through the wind given it's known HP output.

More power and torque will change this.

Quote:

Originally Posted by kannibul

Also, it looks like we should be dyno'ing the car in 5th gear?

I've been saying this all along on other threads. The only problem with using 5th is running into the speed limit of the rollers on the dyno. Some dyno's only support 200km/h, so using 4th is the only option to keep the speed down. (shoud only vary by a few kW anyway.)

my 2c

kannibul · 10-24-2009, 02:38 AM

Quote:

Originally Posted by GTRFAN

I've been saying this all along on other threads. The only problem with using 5th is running into the speed limit of the rollers on the dyno. Some dyno's only support 200km/h, so using 4th is the only option to keep the speed down. (shoud only vary by a few kW anyway.)

my 2c

What's interesting is that using 4th, unless compensated for in some way, the 7AT will show higher torque numbers (and therefore higher HP) due to the reduced ratio in the rear end and 4th gear.

Hmm...interesting, but, not that it matters much. Comparative gains is what I'm interested in, which before and after dyno runs is good enough.

tylerk · 11-19-2012, 01:43 AM

Is this possible with either transmission? I'm asking about stock of course.

Thanks!

280z/300zx · 11-19-2012, 01:50 AM

For the manual tranny yes, not sure about the auto

my2004Z · 11-19-2012, 09:24 AM

The auto takes you to somewhere between 55 & 57. However, once you hit it into 3rd you blow right by 60 almost instantaneously and are threatening 100 before you know it.

onzedge · 11-19-2012, 09:27 AM

Quote:

Originally Posted by tylerk

Is this possible with either transmission? I'm asking about stock of course.

Thanks!

I can get to 60+ mph in 2nd.

Red__Zed · 11-19-2012, 09:30 AM

Manual you can get to ~67 mph in second.

The 7at tops out around 54mph in second.

Mitco39 · 11-19-2012, 09:53 AM

Its been discussed before at length.

Top Speeds in Different Gears (6MT)

Mt Tam I am · 11-19-2012, 10:04 AM

Quote:

Originally Posted by onzedge

I can get to 60+ mph in 2nd.

RandyD · 11-19-2012, 10:44 AM

by the time i notice the shift and look down its at 80

Mt Tam I am · 11-19-2012, 12:27 PM

Gear 6MT/6MT Sport
1st 41mph
2nd 68mph About this as I see it as 70 ish as it goes by
3rd 97mph
4th 124mph This is about where I got to as the rev limiter flashed.
5th 157mph Don't know
6th 198mph Doubt, but don't know

This chart is close enough for government work, in my experience.

onzedge · 11-19-2012, 12:40 PM

Quote:

Originally Posted by Mt Tam I am

Gear 6MT/6MT Sport
1st 41mph
2nd 68mph About this as I see it as 70 ish as it goes by
3rd 97mph
4th 124mph This is about where I got to as the rev limiter flashed.
5th 157mph Don't know
6th 198mph Doubt, but don't know

This chart is close enough for government work, in my experience.

L33T Z34 · 12-11-2012, 02:27 AM

Trans: Stock FS6R31A
final drive gear ratio: 4.363
Tires: 295/30R19
Rev limit: Stock 7,400 RPM / Reflash 8,000 RPM
Top Speed per gear in mph: stock (reflashed)

1) 35 (37)
2) 56 (61)
3) 81 (87)
4) 103 (112)
5) 131 (142)
6) wind resistance, speed unknown

G37Sam · 12-11-2012, 11:34 AM

Where'd you get that final drive from?

UNKNOWN_370 · 12-11-2012, 12:23 PM

Quote:

Originally Posted by 370Zsteve

Resistance from the air will flatten those numbers as speed increases in 5th and 6th. The Z has nice drag coefficient spec, nonetheless physics will take over eventually.

Anyone on the forum taken one to max velocity on the track? And isn't the limiter set at 156mph?

155mph and the fastest I ever heard of a Z going without the limiter is 168mph. I'm Seriously guessing with this part but, the right body kit it might hit 170-172mph without a limiter?

11-19-2012, 01:43 AM	#33 (permalink)
tylerk Base Member Join Date: Oct 2012 Location: TX Posts: 11 Drives: 2012 Golf R Rep Power: 13	0-60 by 2nd Gear? Is this possible with either transmission? I'm asking about stock of course. Thanks!

11-19-2012, 01:50 AM	#34 (permalink)
280z/300zx Track Member Join Date: Feb 2009 Location: Nevada Posts: 689 Drives: 280z, 300zx, Vette Rep Power: 272	For the manual tranny yes, not sure about the auto tylerk likes this.

11-19-2012, 09:53 AM	#38 (permalink)
Mitco39 A True Z Fanatic Join Date: Aug 2012 Location: Edmonton Alberta Canada Posts: 2,089 Drives: 40th 370z Rep Power: 132	Its been discussed before at length. Top Speeds in Different Gears (6MT) __________________ 2007 Chevy Duramax - EFILive Tuned By Me 2010 40th W/ Nav - Boosted Performance - UpRev Tuned By Me The Mrs. Ride -2012 335XI N55 BMW - Cobb Tuned By Me, Built by her My Build --> http://www.the370z.com/members-370z-...39s-build.html

11-19-2012, 10:44 AM	#40 (permalink)
RandyD A True Z Fanatic Join Date: Mar 2011 Location: Potomac Falls, VA Posts: 2,977 Drives: 2010 370z 7AT Roadst Rep Power: 20	by the time i notice the shift and look down its at 80 anthonyy likes this.

11-19-2012, 12:27 PM	#41 (permalink)
Mt Tam I am A True Z Fanatic Join Date: Jun 2010 Location: California Posts: 10,709 Drives: 370Z T/S/N 6MT & XKE Rep Power: 3843	Gear 6MT/6MT Sport 1st 41mph 2nd 68mph About this as I see it as 70 ish as it goes by 3rd 97mph 4th 124mph This is about where I got to as the rev limiter flashed. 5th 157mph Don't know 6th 198mph Doubt, but don't know This chart is close enough for government work, in my experience. onzedge likes this. __________________ "Does the carpet match the drapes? NO!!! I don't date bald women." Nissan Motorsports 34R Oil Cooler. Stillen CBE. Hotchkis Sport Sway Bars. KW Variant 3 Coilover System. Stillen Gen3 CAI. Michelin Pilot Super Sport. Stillen Brake Ducts. Carbotech™ XP10/XP8 Pads. Z1 Front Rotors. Z1 Stainless Brake Lines. Two degrees of camber

11-19-2012, 09:24 AM	#35 (permalink)
my2004Z Enthusiast Member Join Date: Apr 2009 Location: New Mexico, USA Posts: 285 Drives: 09' 370Z w/Sport 7AT Rep Power: 37	The auto takes you to somewhere between 55 & 57. However, once you hit it into 3rd you blow right by 60 almost instantaneously and are threatening 100 before you know it.

11-19-2012, 09:30 AM	#37 (permalink)
Red__Zed A True Z Fanatic Join Date: Jul 2010 Location: window seat Posts: 28,940 Drives: Mostly on two wheels Rep Power: 120	Manual you can get to ~67 mph in second. The 7at tops out around 54mph in second.

12-11-2012, 02:27 AM	#43 (permalink)
L33T Z34 Banned Join Date: Jun 2010 Location: Ahnald, MO Age: 47 Posts: 387 Drives: 09 K51 G C Bw/S 6MT Rep Power: 0	Zero to 37ish... Trans: Stock FS6R31A final drive gear ratio: 4.363 Tires: 295/30R19 Rev limit: Stock 7,400 RPM / Reflash 8,000 RPM Top Speed per gear in mph: stock (reflashed) 1) 35 (37) 2) 56 (61) 3) 81 (87) 4) 103 (112) 5) 131 (142) 6) wind resistance, speed unknown Last edited by L33T Z34; 02-25-2015 at 10:10 PM. Reason: updated RPM

12-11-2012, 11:34 AM	#44 (permalink)
G37Sam A True Z Fanatic Join Date: Dec 2008 Location: Dubai, UAE Posts: 1,507 Drives: RB'd G37 Rep Power: 21	Where'd you get that final drive from? __________________ '14 Viper GTS '08 RB'd G37S - Sold

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