Top Speed in each gear?
03-02-2005, 09:59 AM
#41
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Originally Posted by YellowS2kPwr,Mar 1 2005, 06:30 PM
I too have this... the car hit 281 Kilometers which converts to 176 MPH as drizzles2k said. He is at 9200?-9300? RPM in 6th?
03-02-2005, 10:34 AM
#42
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take this link.. it's a gear calculator....it'll give you the top speed of each gers.. and even if you have changed your geras to the 4.44 or 4.57 or 4.77 it will show you the top speeds.....
http://reverendsgarage.net/index.php?conte..._calculator.php
http://reverendsgarage.net/index.php?conte..._calculator.php
09-21-2021, 11:13 AM
#44
Registered User
Not if you put on some taller rear tires! 
(Or switch to kph display!)
My own estimates for a stock AP1 at 9000rpm fuel-cut, with full-tread OEM 225/50R16 rears (and accounting for ~3% effective diameter reduction due to sidewall compression) are:
1-43
2-66
3-93
4-117
5-140
6-167
And for a stock AP2 at 8200rpm fuel-cut, w/ full-tread OEM 245/45R17 rears (and slightly less effective diameter reduction due to lower profile):
1-38
2-58
3-80
4-102
5-125
6-155
Swap transmissions and keep everything else the same...
F20C w/ AP2 trans, 225/50R16, 9000rpm
1-42
2-64
3-88
4-112
5-138
6-171
F22C w/ AP1 trans, 245/40R17, 8200rpm
1-39
2-60
3-83
4-106
5-127
6-152
Either way, the F22C makes the car a "true" 6-speed, i.e. with the engine power & torque available you might realistically--albeit barely--hit the rev limit in top gear in certain conditions. With the F20C, that's out of the question -- 6th is definitely something of a cruising gear.
Note that despite the huge range of theoretical top speeds (from 152 to 171), in all four cases, 75mph in 6th gear falls at almost the same rpm: between 3950 and 4050! So we can all appreciate the same ~4Krpm drone on the highway!
(Or switch to kph display!) My own estimates for a stock AP1 at 9000rpm fuel-cut, with full-tread OEM 225/50R16 rears (and accounting for ~3% effective diameter reduction due to sidewall compression) are:
1-43
2-66
3-93
4-117
5-140
6-167
And for a stock AP2 at 8200rpm fuel-cut, w/ full-tread OEM 245/45R17 rears (and slightly less effective diameter reduction due to lower profile):
1-38
2-58
3-80
4-102
5-125
6-155
Swap transmissions and keep everything else the same...
F20C w/ AP2 trans, 225/50R16, 9000rpm
1-42
2-64
3-88
4-112
5-138
6-171
F22C w/ AP1 trans, 245/40R17, 8200rpm
1-39
2-60
3-83
4-106
5-127
6-152
Either way, the F22C makes the car a "true" 6-speed, i.e. with the engine power & torque available you might realistically--albeit barely--hit the rev limit in top gear in certain conditions. With the F20C, that's out of the question -- 6th is definitely something of a cruising gear.
Note that despite the huge range of theoretical top speeds (from 152 to 171), in all four cases, 75mph in 6th gear falls at almost the same rpm: between 3950 and 4050! So we can all appreciate the same ~4Krpm drone on the highway!
09-21-2021, 11:21 AM
#45
Going back to re-read this and it reminds me that I was shifting too soon on the final corner at the standing start track event I just did 
One of those spots on the track where it is kinda too busy to check speed and am near redline, so just shifted where it made sense. Still managed to mis- shift there when I coulda just waited through the next corner (Where I am at about 90mph) and shifted on the finish straight!
One of those spots on the track where it is kinda too busy to check speed and am near redline, so just shifted where it made sense. Still managed to mis- shift there when I coulda just waited through the next corner (Where I am at about 90mph) and shifted on the finish straight!
09-21-2021, 11:25 AM
#46
Registered User
P.S. What if you keep your AP1 or AP2 trans but swap out the secondary reduction gear? Interestingly, you get the same theoretical top speed for both cases: 161mph, exactly halfway between the stock configs!
F20C, AP1 trans w/ AP2 secondary (1.208:1), 225/50R16, 9000rpm
1-42
2-64
3-88
4-112
5-134
6-161
F22C, AP2 trans w/ AP1 secondary (1.16:1), 245/40R17, 8200rpm
1-39
2-60
3-83
4-106
5-131
6-161
And on the highway at 75mph in 6th? Now there's a real difference! The F20C will be spinning at 4200rpm, while the F22C lumbers along at a leisurely 3800rpm!
F20C, AP1 trans w/ AP2 secondary (1.208:1), 225/50R16, 9000rpm
1-42
2-64
3-88
4-112
5-134
6-161
F22C, AP2 trans w/ AP1 secondary (1.16:1), 245/40R17, 8200rpm
1-39
2-60
3-83
4-106
5-131
6-161
And on the highway at 75mph in 6th? Now there's a real difference! The F20C will be spinning at 4200rpm, while the F22C lumbers along at a leisurely 3800rpm!
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