Difference between revisions of "2GR-FE Gearboxes"
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[[Category:Lotus Evora]] | [[Category:Lotus Evora]] | ||
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Revision as of 08:00, 28 August 2012
Introduction
The standard model Lotus Evora comes with the choice of 3 gearboxes, the standard 6-speed manual, the Close Ratio Gearbox - again a 6-speed manual but with a closer ratio gear set - and the Lotus IPS 6-speed automatic (this makes the car an Evora IPS).
All three of these gearboxes are Toyota sourced, with the IPS featuring Lotus's own electronic controls to make it more suitable for a sporting application.
Manual gearbox information
For the manual gearboxes this is the Toyota EA60 gearbox, as fitted to the Toyota Auris 2.0 D-4D and 2.2 D-CAT models.1 These are diesel engines, and the standard ratios are as they in the Auris, possibly explaining why they are often seen as rather long. The closer ratio gear set appears to be a bespoke set of ratios unique to the Evora and Evora S.
An adaptor plate is used to allow the engine and gearbox to be joined together, and the starter motor is relocated compared to the Toyota application.
For the manual gearboxes Lotus list two final drive ratios, one for 1st through 4th gears and another slightly shorter ratio for 5th and 6th.2
Automatic gearbox information
The Evora IPS and S IPS use the Toyota U660E gearbox3 as used by Toyota in conjunction with the 2GR-FE engine in several vehicles.
There are 3 modes of operation for the IPS gearbox: Drive, Sport, and paddle over-ride.4
Drive
Drive is biassed towards fuel economy, generally keeping the engine below 2000rpm.
Sport
Sport mode adds throttle blips on downshifts and generally runs the engine at higher revs to improve responsiveness.
Paddle
Paddle mode is activated by pulling on one of the paddles in either Drive or Sport mode, and allows the driver to change gear with the paddles mounted behind the wheel.
In Drive mode the car will return to Automatic operation if the paddles are not used for 10 seconds, and will shift up when the rev limiter is hit.
In Sport mode the gearbox will not shift up automatically even if the rev limit is reached. The original gearbox software would return to Automatic operation if the paddles were not used for 30 seconds in Sport mode, but the latest software updates, carried out when the car is taken for a main dealer service, see the car remain in Sport Manual mode indefinitely until the Drive button is pressed or Sport mode is disabled.5
Unlike the manuals, cars fitted with the IPS gearbox do not have the engines rev limit increased to 7000rpm when in Sport Mode, as this would damage the gearbox.6
Other information
The IPS gearbox was introduced as an option for the Evora in September 2010 and the Evora S in September 2011.
All Evora S's come with the close ratio Sport Gearbox fitted as standard. For the standard Evora the Sport Gearbox was added as standard equipment for the MY12 cars onwards.
Gear Ratios
| Gearbox | 1 | 2 | 3 | 4 | 5 | 6 | Reverse | Final Drive 1st - 4th | Final Drive 5th - 6th |
|---|---|---|---|---|---|---|---|---|---|
| Standard | 3.538 | 1.913 | 1.218 | 0.86 | 0.79 | 0.638 | 3.831 | 3.777 | 3.238 |
| Close Ratio | 3.538 | 1.913 | 1.407 | 1.091 | 0.9697 | 0.8611 | 3.831 | 3.777 | 3.238 |
| IPS | 3.300 | 1.900 | 1.420 | 1.000 | 0.713 | 0.608 | 4.148 | 3.9357 | 3.935 |
Maximum Speed per gear
Speeds displayed at 6400rpm and 7000rpm in brackets for Sport Mode.
| Gearbox | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| Standard | 37.09mph (40.57mph) | 68.60mph (75.03mph) | 107.75mph (117.85mph) | 152.60mph (166.90mph) | 193.77mph (211.94mph) | 239.94mph (262.43mph) |
| Close Ratio | 37.09mph (40.57mph) | 68.60mph (75.03mph) | 93.27mph (102.02mph) | 120.29mph (131.56mph) | 157.86mph (172.66mph) | 177.77mph (194.44mph) |
| IPS | 38.17mph | 66.30mph | 88.71mph | 125.96mph | 176.71mph | 207.18mph |
Emissions
The official CO2 emission and fuel consumption ratings for the Evora vary depending on the gearbox equipped to the car.
| Evora MY10 | Evora MY11 | Evora Sport Gearbox | Evora IPS | Evora S | Evora S IPS | |
|---|---|---|---|---|---|---|
| Fuel Consumption - Urban | 22.8mpg (12.4 l/100km) | 23.4mpg (12.1 l/100km) | 22.1mpg (12.8 l/100km) | 22.4mpg (12.6 l/100km) | 19.4mpg (14.6 l/100km) | 19.6mpg (14.4 l/100km) |
| Fuel Consumption - Extra Urban | 43.5mpg (6.5 l/100km) | 44.8mpg (6.3 l/100km) | 40.4mpg (7.0 l/100km) | 44.8mpg (6.3 l/100km) | 37.2mpg (7.6 l/100km) | 40.8mpg (6.9 l/100km) |
| Fuel Consumption - Combined | 32.5mpg (8.7 l/100km) | 33.2 (8.5 l/100km) | 31.0mpg (9.1 l/100km) | 33.2mpg (8.5 l/100km) | 27.2mpg (10.2 l/100km) | 29.3mpg (9.7 l/100km) |
| CO2 Emissions - Urban | - | 285g/km | 301g/km | 297g/km | 341g/km | |
| CO2 Emissions - Extra Urban | - | 149g/km | 165g/km | 156g/km | 179g/km | |
| CO2 Emissions - Combined | 205g/km | 199g/km | 215g/km | 208g/km | 239g/km | 224g/km |