Standar Exige Gearbox Ratios

General General Lotus Talk
1

Hi Guys,

Well after the woes of Snetterton I have decided to call it a day with the Quaife gearbox. I think over the last 18 months I have given it a fair crack of the whip, but after adding up spare parts and rebuild costs enough is enough. It’s all out now and will be rebuilt before being sold. I have bought a standard Exige box to go back into the car until I have finally made my mind up on what to replace the Quaife box with. I am nine tenths there with my decision, but as the favourite to replace it doesn’t come with a K series bell housing (or any bell housing for that matter) I will have to get one designed, drawn and CNC’d so it isn’t gonna happen in five minutes.

So my question is does anyone have the standard Exige gearbox ratios including the final drive, so I can work out how bloody crap and slow my car will be at Oulton Park.

Cheers,

Sean…

2

FD = 4.20:1 and 039 on 17inch

  1. 2.92:1 5.8 MPH/1000 Revs
  2. 1.75:1 9.9 MPH/1000 Revs
  3. 1.31:1 13.1 MPH/1000 Revs
  4. 1.03:1 16.7 MPH/1000 Revs
  5. 0.85:1 20.2 MPH/1000 Revs
3

Got this from somewhere…

Factory c/r gearbox: 4.20 (15:63) final drive
RPM Nm Ft lbs First mph Second mph Third mph Fourth mph Fifth mph
Teeth: input 13 20 26 30 33
Teeth: output 38 35 34 31 28
Ratio 2.92 1.75 1.31 1.03 0.85
Overall ratio 12.28 7.35 5.49 4.34 3.56
Mph/1000rpm 5.62 9.38 12.55 15.89 19.35
Approx RPM drop* -2488 -1567 -1301 -1109

4

Of course that’s on the Elise wheels, hence difference

5

Sean, I’ve got them on my laptop at home, I’ll post up gear ratio’s tonight with speeds etc

6

Cheers everyone. Bloody hell its long aint it. With the revs I was pulling at Snett, I will be doing 186mph!!! LOL

7

I think all these assume the standard 7800rpm limit

Standard
Gear / ratio / MPH
1 3.167 44
2 1.842 76
3 1.307 107
4 1.033 135
5 0.765 182!!!
FD 3.938

Close Ratio
Gear / Ratio / MPH
1st 2.923 47
2nd 1.750 79
3rd 1.308 105
4th 1.033 133
5th 0.848 162
FD 4.2

Ultra Close
Gear / Ratio / MPH
1st 3.000 49
2nd 1.937 76
3rd 1.556 94
4th 1.273 115
5th 1.043 140
FD 3.938

8

Anyone got any S2 Exige figs? (I presume 190 and 220 are the same ratios?)

9

Anyone got any S2 Exige figs? (I presume 190 and 220 are the same ratios?)

Standard Yota Exige/Elise gear-ratio:

Final: 4.53
1st: 3.12
2nd: 2.05
3rd: 1.48
4th: 1.17
5th: 0.92
6th: 0.82

Close-Ratio gearbox for Yota Exige/Elise:

Final: 4.53
1st: 2.93
2nd: 2.17
3rd: 1.70
4th: 1.36
5th: 1.17
6th: 0.91

10

Thats interesting. I’ve always understood that Lotus fitted the shortest ratio’s available for the 'yota cars, cause the standard set used in the celicas etc were way too tall for the Elise/Exige

Or is that the two sets of figures you’re quoting?

11

Thats interesting. I’ve always understood that Lotus fitted the shortest ratio’s available for the 'yota cars, cause the standard set used in the celicas etc were way too tall for the Elise/Exige

Or is that the two sets of figures you’re quoting?

Nope - from what I know, the std Celica/Corolla (140bhp) have different gearratios to the TS models (Celica/Corolla TS models == 189bhp).

There’s definately a shorter gearbox than the one that is standard in the Elise 111R and Exige S2.

With the standard 111R/ExigeS2 gearratio, following is possible:

1st gear at 8500 rpm = 45 mph
2nd gear at 8500 rpm = 67 mph
3rd gear at 8000 rpm = 88 mph
4th gear at 8000 rpm = 111 mph
5th gear at 8000 rpm = 142 mph
6th gear at 8000 rpm = 160 mph

With the sport or close ratio gearbox, it’s:

1st gear at 8500 rpm = 47 mph
2nd gear at 8500 rpm = 64 mph
3rd gear at 8000 rpm = 77 mph
4th gear at 8000 rpm = 96 mph
5th gear at 8000 rpm = 111 mph
6th gear at 8000 rpm = 144 mph

Cheers Phil