gear ratio transmission comparison between evo and dsm

Quote Originally Posted by Fourdoor
This is assuming you are running stock sized tires on each car. New info added, "JDM CR" means JDM close ratio 5 speed.

For gas milage considerations, here is a break down top gear RPM at various cruiseing speeds on the highway.

speed . . . AWD DSM. . . . . EVO VIII. . . . . EVO IX. . . . . EVO MR . . . . . .JDM CR

55 . . . . . . . . 2425 . . . . . . . . 2365 . . . . . . . 2500 . . . . . . .2305. . . . . . .2710

60 . . . . . . . . 2645 . . . . . . . . 2580 . . . . . . . 2730 . . . . . . .2515. . . . . . .2960

65 . . . . . . . . 2865 . . . . . . . . 2795 . . . . . . . 2955 . . . . . . .2720. . . . . . .3205

70 . . . . . . . . 3085 . . . . . . . . 3010 . . . . . . . 3185 . . . . . . .2930. . . . . . .3450

75 . . . . . . . . 3310 . . . . . . . . 3230 . . . . . . . 3410 . . . . . . .3140. . . . . . .3700

80 . . . . . . . . 3530 . . . . . . . . 3440 . . . . . . . 3640 . . . . . . .3350. . . . . . .3945

85 . . . . . . . . 3750 . . . . . . . . 3660 . . . . . . . 3865 . . . . . . .3560. . . . . . .4190


And for full throttle acceleration considerations, here is a break down of what speed you are going at the top of each gear just befor shifting to the next higher gear (assuming shifting at stock redline of 7,000 RPM) and what RPM you enter the next higher gear at. I made the assumption that the JDM CR gears would be added to the EVO VIII 5 speed instead of to the IX 5 speed since the IX already has closer gears than the VIII.

Gear . . . . AWD DSM. . . . . . . EVO VIII. . . . . . . . EVO IX. . . . . . . . EVO MR. . . . . . . . JDM CR

1st . . . . . 34.4 (3800) . . . . . 40.0 (4700) . . . . 42.1 (4900) . . . .39.8 (4700) . . . . . 40.0 (4700)

2nd . . . . . 62.8 (4650) . . . . 60.1 (5050) . . . . 60.1 (5200) . . . .59.6 (5200) . . . . . . 60.1 (5050)

3rd . . . . . 94.8 (5250) . . . . . 83.2 (5150) . . . . 81.1 (5300) . . . .80.8 (5350) . . . . . 83.2 (5450)

4th . . . . . 126.9 (5600) . . . 113.6 (4900) . . . 106.9 (4850) . . . .105.3 (5500) . . . .106.9 (5250)

5th . . . . . 158.7 (N/A) . . . . 162.7 (N/A) . . . . 153.9 (N/A) . . . . .133.7 (5600) . . . . .142.0 (N/A)

6th . . . . . N/A (N/A) . . . . . . . . N/A (N/A) . . . . . . N/A (N/A) . . . . .167.1 (N/A) . . . . . . .N/A (N/A)

Keith

PS: Anyone wants the Exel file I used for calculating the speeds (based on tire diameter, gear ratio's, and final drive ratio) PM me with your e-mail address.
Quote Originally Posted by Fourdoor
OK guys, here is the data for all previous EVO setups with a swap over to HKS 4.111 gear set.

This is assuming you are running stock sized tires on each car. New info added, "JDM CR" means JDM close ratio 5 speed.

For gas mileage considerations, here is a break down top gear RPM at various cruising speeds on the highway.

speed . . . EVO VIII. . . . . . EVO IX. . . . . . . EVO MR . . . . . .JDM CR

55 . . . . . . . . 2150 . . . . . . . . 2270 . . . . . . . . 2070 . . . . . . . .2460

60 . . . . . . . . 2345 . . . . . . . . 2480 . . . . . . . . 2255 . . . . . . . .2685

65 . . . . . . . . 2540 . . . . . . . . 2685 . . . . . . . . 2445 . . . . . . . .2910

70 . . . . . . . . 2735 . . . . . . . . 2890 . . . . . . . . 2630 . . . . . . . .3135

75 . . . . . . . . 2930 . . . . . . . . 3095 . . . . . . . . 2820 . . . . . . . .3355

80 . . . . . . . . 3125 . . . . . . . . 3300 . . . . . . . . 3005 . . . . . . . .3580

85 . . . . . . . . 3320 . . . . . . . . 3510 . . . . . . . . 3195 . . . . . . . .3805


And for full throttle acceleration considerations, here is a break down of what speed you are going at the top of each gear just before shifting to the next higher gear (assuming shifting at stock redline of 7,000 RPM) and what RPM you enter the next higher gear at. I made the assumption that the JDM CR gears would be added to the EVO VIII 5 speed instead of to the IX 5 speed since the IX already has closer gears than the VIII.

Gear . . . . EVO VIII. . . . . . . . . EVO IX. . . . . . . . . . EVO MR. . . . . . . . . . JDM CR

1st . . . . . 44.1 (4700) . . . . . 46.3 (4900). . . . . . .44.4 (4700) . . . . . . 44.1 (4700)

2nd . . . . 66.2 (5050) . . . . . . 66.2 (5200) . . . . . .66.4 (5200) . . . . . . 66.2 (5050)

3rd . . . . . 91.7 (5150) . . . . . . 89.4 (5300) . . . . .90.0 (5350) . . . . . . 91.7 (5450)

4th . . . . 125.2 (4900) . . . . . 117.7 (4850) . . . .117.3 (5500) . . . . . .117.7 (5250)

5th . . . . 179.2 (N/A) . . . . . . 169.6 (N/A) . . . . . .149.0 (5600) . . . . . .156.4 (N/A)

6th . . . . N/A (N/A) . . . . . . . . . N/A (N/A) . . . . . . .186.2 (N/A) . . . . . . . . . .N/A (N/A)

Keith

PS: Anyone wants the Excel file I used for calculating the speeds (based on tire diameter, gear ratio's, and final drive ratio) PM me with your e-mail address.