top speed question
08-01-03, 09:00 PM
#1
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top speed question
so people have claimed to do speeds in excess of 170. correct me if im wrong but in 5th the car redlines @ ~168mph. that can not be raised w/out a new transmission or gears right? im just trying to understand where the people who are saying "yeah i did 180" are coming from.....
08-01-03, 09:33 PM
#3
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205 mph as far as I know.
The quoted top speed of 165 or so is drag limited, not redline limited. As long as the car has to power to do it, it can break 200 mph.
The quoted top speed of 165 or so is drag limited, not redline limited. As long as the car has to power to do it, it can break 200 mph.
08-02-03, 02:54 AM
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seriously?? the fastest ive taken her is 140 and the 7 seemed completely at home at that speed.. very stable. although looking at the tach, it didnt seem like there would be much left before redline... @ 140 what RPM are we talking about? for some reason im thinking mid to high 5K RPM (someone correct me please cause i just glanced down)... im really surprised by a 200MPH redline in 5th. but if you say so I believe you! i felt a little to comfortable going 140 now that i think about it...but much faster and youre really starting to push it as far as turbulant air/ front end lift no? i usually end up at 120 at least once every time i take her out 
and i dont really think twice about it any more.
and i dont really think twice about it any more.
08-02-03, 03:50 AM
#6
NorCal 7's Co-founder
I know for a fact that 176mph is attainable with fairly stock trim. I have heard of FD's breaking into the 190's with good mods. Also, you should be able to hit right near the 140mph mark as you redline 4th gear. Try it sometime. You should end up near there. About 7800rpm in 4th should easily yield between 130 and 140mph. I know it did in mine and I had a stock rear end and stock tranny build. Just what I've seen. But I also know that FD's tend to be different car to car. Laterz.
Zach
Zach
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08-02-03, 03:31 PM
#9
2/4 wheel cornering fiend
Everyone should also know that speedos are notoriously unreliable as far as displaying your actual speed, especially as your speed goes into triple digits. Due to an obscure federal requirement that mandates any speedo on any car sold in the U.S. must not under any circumstances display a speed lower than what the car is actually traveling, car manufacturers "build in" a speedo error of 5-9% to cover their asses. Then you must take actual tire diameter (not just wheel diameter) into account, and every tire is different. Then there's wheelspin (not sure if the FD speedo reads off the rear or front wheels) at speed.....
08-02-03, 03:45 PM
#10
Constant threat
Originally posted by Kento
Everyone should also know that speedos are notoriously unreliable as far as displaying your actual speed, especially as your speed goes into triple digits. Due to an obscure federal requirement that mandates any speedo on any car sold in the U.S. must not under any circumstances display a speed lower than what the car is actually traveling, car manufacturers "build in" a speedo error of 5-9% to cover their asses. Then you must take actual tire diameter (not just wheel diameter) into account, and every tire is different. Then there's wheelspin (not sure if the FD speedo reads off the rear or front wheels) at speed.....
Everyone should also know that speedos are notoriously unreliable as far as displaying your actual speed, especially as your speed goes into triple digits. Due to an obscure federal requirement that mandates any speedo on any car sold in the U.S. must not under any circumstances display a speed lower than what the car is actually traveling, car manufacturers "build in" a speedo error of 5-9% to cover their asses. Then you must take actual tire diameter (not just wheel diameter) into account, and every tire is different. Then there's wheelspin (not sure if the FD speedo reads off the rear or front wheels) at speed.....
You are correct in pointing out that the actual tire diameter will affect the actual speed. The stock speedo is calibrated to new 225/50-16 tire/wheel combo.
Meaning a 24.858" diameter tire.
08-04-03, 11:53 AM
#12
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there was an article in motor trend a year or two ago about speedo error...and it turns out that japanese cars were the best with like a 2% error, followed by the americans @ 4% and then the germans...which are very paranoid...9-11% error. So i would trust ur FD's speedo
08-04-03, 12:14 PM
#13
2/4 wheel cornering fiend
Maybe at legal speeds (like the MT test), with totally stock tires and rims. Once you go into triple digits, the error increases exponentially. Plus, since the FD speedo is reading off of the rear wheels, wheelspin (which does occur at triple digit speeds on dry pavement, believe it or not) will also increase the actual speed displayed.
08-04-03, 01:47 PM
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in any case people are saying 150 in 4th right? 5th gear can squeeze out another 50MPH??? when i shift to 5th it doesnt drop the rpm's down very far. i just dont see how 200MPH at 8K RPM is possible. has anyone on a dyno verified this?
08-04-03, 05:42 PM
#16
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Originally posted by Van Sema
Enjoy ...
Enjoy ...
DEAR GOD tell me you did that on a dyno!! I'd be too damn scared to take my hand off the wheel to take a pic!!!!
08-04-03, 05:51 PM
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He had to have done it on the dyno. There is no way the picture could be so stable with the vibrations at those speeds.
If not, he's got ***** the size of watermelons.
If not, he's got ***** the size of watermelons.
08-04-03, 05:52 PM
#19
Originally posted by RotorMotor
in any case people are saying 150 in 4th right? 5th gear can squeeze out another 50MPH??? when i shift to 5th it doesnt drop the rpm's down very far. i just dont see how 200MPH at 8K RPM is possible. has anyone on a dyno verified this?
in any case people are saying 150 in 4th right? 5th gear can squeeze out another 50MPH??? when i shift to 5th it doesnt drop the rpm's down very far. i just dont see how 200MPH at 8K RPM is possible. has anyone on a dyno verified this?
08-04-03, 06:16 PM
#20
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Originally posted by RotorMotor
in any case people are saying 150 in 4th right? 5th gear can squeeze out another 50MPH??? when i shift to 5th it doesnt drop the rpm's down very far. i just dont see how 200MPH at 8K RPM is possible. has anyone on a dyno verified this?
in any case people are saying 150 in 4th right? 5th gear can squeeze out another 50MPH??? when i shift to 5th it doesnt drop the rpm's down very far. i just dont see how 200MPH at 8K RPM is possible. has anyone on a dyno verified this?
With the stock gearing and wheel+tire diameter, you can hit 141 mph at 8000 rpm in 4th, which has a 1:1 gear ratio. 5th gear has a 0.72 ratio. This equals approximately 196 mph.
08-04-03, 06:29 PM
#21
No it's not Turbo'd
Uh, I've seen this with my own eyes, if you pull the fuse for the Engine cluster and go past 100 or the 12'o clock position the needle drops on the other side, all you'd have to do it park it and rev the gas to 8K and take the Picture with both wheels standing still !
Now if the needle was steady at 180 there might still be the Photoshop factor, but it would be more believeable...
-DC
08-04-03, 06:46 PM
#22
2/4 wheel cornering fiend
Originally posted by Van Sema
Enjoy ...
Enjoy ...
Originally posted by turbogarrett
it should be a lot easier on a dyno without 200mph of wind resistance.
it should be a lot easier on a dyno without 200mph of wind resistance.
LOL ! That'll slow him down !
08-04-03, 07:56 PM
#24
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holy sh*t!!! ok well 'nuff said, im a believer! wow they should put a redline on the speedo too!!! thanks for all the info everyone!
08-04-03, 10:28 PM
#25
On a DynoJet, my car did 194.5mph, with 315/35/17's
on a road, I have seen the speedo just past the 180 mark on 225/50/16's
with 315/35/17's on the road, I've seen the speedo read barely under the 180 mark
what I'm getting at here, is that I know that several other people have done these speeds and faster in an FD. A modded FD is definately capable of these speeds and upwards of 200mph!
on a road, I have seen the speedo just past the 180 mark on 225/50/16's
with 315/35/17's on the road, I've seen the speedo read barely under the 180 mark
what I'm getting at here, is that I know that several other people have done these speeds and faster in an FD. A modded FD is definately capable of these speeds and upwards of 200mph!