Top speed of '07 honda civic 1.8(mt/at or 2.0(mt/at

[FWC]

The A/T variant will have a higher top speed than the M/T version (applies to both 1.8 and 2.0) because the former has a higher gear ratio.

In theory, that is correct. But in practice, the A/T could never maximize the gear ratio. There is a fluid coupling between the engine and the power train and this absorbs a lot of the engine's power if there is too much resistance in the power train (wind velocity, load factor, etc.).

[oj88]

In theory, that is correct. But in practice, the A/T could never maximize the gear ratio. There is a fluid coupling between the engine and the power train and this absorbs a lot of the engine's power if there is too much resistance in the power train (wind velocity, load factor, etc.).

Not this baby.

Most, if not all modern A/Ts have a torque converter lockup clutch. It means that as both sides of the torque converter (input vs output) approaches the same speed, the clutch locks them up to mitigate torque converter losses and should improve fuel efficiency.

The Honda 5-speed A/T, among others, have this feature.

Of course, top speed is different from acceleration. A M/T would be in an advantage during acceleration.

[FWC]

Not this baby.

Most, if not all modern A/Ts have a torque converter lockup clutch. It means that as both sides of the torque converter (input vs output) approaches the same speed, the clutch locks them up to mitigate torque converter losses and should improve fuel efficiency.

The Honda 5-speed A/T, among others, have this feature.

Of course, top speed is different from acceleration. A M/T would be in an advantage during acceleration.

I checked out the specs.

This is for the M/T: Gear Ratios: 1st: 3.143, 2nd: 1.870, 3rd: 1.235, 4th: 0.949, 5th: 0.727, Reverse: 3.308, Final Drive: 4.29

This is for the A/T: Gear Ratios: 1st: 2.666, 2nd: 1.534, 3rd: 1.022, 4th: 0.721, 5th: 0.525, Reverse: 1.957, Final Drive: 4.44

You are right. And it's not only on in the top gears. It is in all the gears, in fact. But check out the Final Drive. The M/T has a higher final gear ratio but it's just a small difference compared to the differences in gears.

Now, I wonder why it's that way. They're supposed to be getting the same power from the same engine.

[Starex_Gold]

sa teamFD:

1.8S M/T: 210 KPH
1.8S A/T: 214 KPH

2.0S M/T: 225 KPH
2.0S-L A/T: 225 KPH

ALL STOCK ang engine nila. Pero yung kay mamar 1.8S M/T TURBO naka 215 KPH pero hindi pa sagad yun..

[oj88]

Courtesy of Cocho from TeamFD. He has a Civic 2.0S M/T

[parakitoJDM]

sa teamFD:

1.8S M/T: 210 KPH
1.8S A/T: 214 KPH

2.0S M/T: 225 KPH
2.0S-L A/T: 225 KPH

ALL STOCK ang engine nila. Pero yung kay mamar 1.8S M/T TURBO naka 215 KPH pero hindi pa sagad yun..

wow puede na din pala 1.8S A/T: kaya na din over 200kph. can anyone vouch for this BTW? i'm wondering they its 4kph faster than the manual? was it in a different road gradient? like A/T was going slightly downhill and the M/T was done on patag road?

[parakitoJDM]

I checked out the specs.

This is for the M/T: Gear Ratios: 1st: 3.143, 2nd: 1.870, 3rd: 1.235, 4th: 0.949, 5th: 0.727, Reverse: 3.308, Final Drive: 4.29

This is for the A/T: Gear Ratios: 1st: 2.666, 2nd: 1.534, 3rd: 1.022, 4th: 0.721, 5th: 0.525, Reverse: 1.957, Final Drive: 4.44

You are right. And it's not only on in the top gears. It is in all the gears, in fact. But check out the Final Drive. The M/T has a higher final gear ratio but it's just a small difference compared to the differences in gears.

Now, I wonder why it's that way. They're supposed to be getting the same power from the same engine.

yes all cars of the same model & engine but different tranny are geared differently. the A/T has longer ratio because the torque converter can make-up for some at low speed by virtue of torque multiplication. in other words.... the 1.8 S M/T at 100Kph maybe spinning at around XXXrpm, and the same car with the same engine but with an A/T would only be spinning at a lower REV let's call it YYYrpm.