Driving a Z question

yaheard · 10-12-2011, 06:37 AM

Thanks for all the help. That clears it up then!

kenchan · 10-12-2011, 07:06 AM

Oh so its 280 to hit first stage limp.... I will never hit that then with my drives. I barely go near 240 on the hottest summer day driving spritedly.

m4a1mustang · 10-12-2011, 09:28 AM

Someone needs to do the calculation. What speed would you be traveling in 6th gear at 7500 rpm?

m4a1mustang · 10-12-2011, 09:30 AM

OK,

ROUGH calculation here...

.794 6th gear ratio, 3.692 final drive ratio (6MT), 275/35/19 tire, 7500 rpm... about 200 MPH.

6MT · 10-12-2011, 09:34 AM

Quote:

Originally Posted by m4a1mustang

OK,

ROUGH calculation here...

.794 6th gear ratio, 3.692 final drive ratio (6MT), 275/35/19 tire, 7500 rpm... about 200 MPH.

That sounds a bit high (final speed, that is). I went 160 at 7100rpms. But I have 20" rims (speedo is approx. ten percent off).

m4a1mustang · 10-12-2011, 09:37 AM

Quote:

Originally Posted by 6MT

That sounds a bit high (final speed, that is). I went 160 at 7100rpms. But I have 20" rims (speedo is approx. ten percent off).

With a 26.6" tall tire, .794 6th gear ratio, and a 3.692 final drive ratio the theoretical top speed is roughly 201 mph and change.

In 5th gear (1:1) it drops to ~161 mph.

poorazn · 10-12-2011, 09:49 AM

Quote:

Originally Posted by m4a1mustang

With a 26.6" tall tire, .794 6th gear ratio, and a 3.692 final drive ratio the theoretical top speed is roughly 201 mph and change.

In 5th gear (1:1) it drops to ~161 mph.

Drag....

m4a1mustang · 10-12-2011, 09:51 AM

Quote:

Originally Posted by poorazn

Drag....

Which is why I said theoretical top speed. These are just gearing calculations. Obviously a stock Z can't get anywhere near theoretical top speed.

thetaste · 10-12-2011, 09:36 AM

Quote:

Originally Posted by m4a1mustang

OK,

ROUGH calculation here...

.794 6th gear ratio, 3.692 final drive ratio (6MT), 275/35/19 tire, 7500 rpm... about 200 MPH.

Sweet. Time to go to the texas mile!

m4a1mustang · 10-12-2011, 09:37 AM

Quote:

Originally Posted by thetaste

Sweet. Time to go to the texas mile!

Just make sure you call ahead and tell them to place the track inside a vacuum.

onzedge · 10-12-2011, 10:22 AM

Quote:

Originally Posted by m4a1mustang

Just make sure you call ahead and tell them to place the track inside a vacuum.

shadoquad · 10-12-2011, 11:02 AM

Why don't we see if we can find a German Z owner and get him to disable the car's governor and go find an Autobahn?

ImportConvert · 10-12-2011, 11:03 AM

Quote:

Originally Posted by shadoquad

Why don't we see if we can find a German Z owner and get him to disable the car's governor and go find an Autobahn?

Because at 150+ most factory speedometers are off by what would amount to probably 20 horsepower or more.

shadoquad · 10-12-2011, 11:04 AM

Quote:

Originally Posted by ImportConvert

Because at 150+ most factory speedometers are off by what would amount to probably 20 horsepower or more.

Ok, how about some telemetry software then? GPS tracking? lol there has to be a relatively cheap and fun way to do this.

m4a1mustang · 10-12-2011, 11:07 AM

Quote:

Originally Posted by shadoquad

Ok, how about some telemetry software then? GPS tracking? lol there has to be a relatively cheap and fun way to do this.

Yes. GPS and a digital tach readout for confirmation helps.

10-12-2011, 09:28 AM	#3 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6964	Someone needs to do the calculation. What speed would you be traveling in 6th gear at 7500 rpm? __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

10-12-2011, 09:30 AM	#4 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6964	OK, ROUGH calculation here... .794 6th gear ratio, 3.692 final drive ratio (6MT), 275/35/19 tire, 7500 rpm... about 200 MPH. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Body Kit + City driving conditions Question	Cafiax	Exterior & Interior	45	07-18-2012 07:13 PM
A Driving Related Question	christian370z	Nissan 370Z General Discussions	37	01-26-2011 10:36 AM
Question on snow driving	molamann	Other Vehicles	2	12-24-2010 01:44 PM
Going to performance driving school. 2010 Z oil temp question	SeattleLion	Track / Autocross / Drifting / Dragstrip	22	12-05-2010 12:52 PM
Snowboard Rack and Winter Driving Question	NomadicMarine	Nissan 370Z General Discussions	15	10-22-2010 08:40 AM

10-12-2011, 06:37 AM	#1 (permalink)
yaheard Base Member Join Date: Jan 2010 Location: VA Posts: 148 Drives: 6MT Monterrey Blue Z Rep Power: 17	Thanks for all the help. That clears it up then!

10-12-2011, 07:06 AM	#2 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141522	Oh so its 280 to hit first stage limp.... I will never hit that then with my drives. I barely go near 240 on the hottest summer day driving spritedly.

10-12-2011, 11:02 AM	#12 (permalink)
shadoquad A True Z Fanatic Join Date: Apr 2010 Location: . Posts: 42,608 Drives: . Rep Power: 3888	Why don't we see if we can find a German Z owner and get him to disable the car's governor and go find an Autobahn?