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All you ever wanted to know about Evo gearing and gear speeds

 
Old Apr 9, 2008, 12:29 PM
  #16  
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nice i was JUST looking for this

i was wondering why my ix hit only 105 in 4th cuz i had heard it can get to 117 but i guess thats normal since i'm shifting at redline
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Old Apr 9, 2008, 08:29 PM
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The mods should make this thread a sticky!
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Old Apr 9, 2008, 08:41 PM
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Any comparative info on the JDM RS close ratio 5-spd. gearbox?

Last edited by sparky; Apr 9, 2008 at 10:11 PM.
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Old Apr 9, 2008, 08:54 PM
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are these all the gearsets avaliable to the 8 or 9 5 spd gearbox per se.
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Old Dec 21, 2010, 10:02 PM
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bump.. would a switch to evo8 5th gear from a evo9 be worth it to drop rpms/noise in the car for highway cruising around 75mph?
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Old Feb 20, 2011, 09:32 AM
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Originally Posted by kyooch View Post
bump.. would a switch to evo8 5th gear from a evo9 be worth it to drop rpms/noise in the car for highway cruising around 75mph?
I would say yes, and I am actually considering this. Realistically, if you are hitting 120+ at redline in 4th, do you really need to go any faster? If your planning on going faster than that on the highway and using 5th gear, then you'd have to be psychotic although I used to do it. But I don't ever encourage racing on the street, especially at those speeds. FWIW
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Old Jan 4, 2012, 09:22 PM
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Originally Posted by Noize View Post
Gear- ratio- mph at 7000rpm (redline)- mph at 7700rpm (close to rev limiter on most flashes)

Evolution VIII 5 speed
1st- 2.928:1- 40mph- 44mph
2nd- 1.95:1- 60mph- 66mph
3rd- 1.407:1- 83mph- 91mph
4th- 1.031:1- 113mph- 124mph
5th- 0.72:1- 162mph- 178mph
Reverse- 3.416:1
Final Drive- 4.529:1

Evolution IX 5 speed
1st- 2.785:1- 42mph- 46mph
2nd- 1.95:1- 60mph- 66mph
3rd- 1.444:1- 81mph- 88mph
4th- 1.096:1- 106mph- 117mph
5th- 0.761:1- 153mph- 168mph
Reverse- 3.416
Final Drive- 4.529:1

Evolution VIII and IX MR 6 speed
1st- 2.909:1- 40mph- 44mph
2nd- 1.944:1- 59mph- 65mph
3rd- 1.434:1- 80mph- 88mph
4th- 1.1:1- 105mph- 115mph
5th- 0.868:1- 133mph- 146mph
6th- 0.693:1- 166mph- 183mph
Reverse- 2.707
Final Drive- 4.583:1
I am a bit confused - Evo 9 5speed and 6 speed are both nearly 1:1 ratio in 4th gear, and almost the same speed (105 and 106 mph) but have drastically different final drive ratios - so shouldn't the mph should be more than 1 mph different?

actually the 2nd, 3rd and 4th gears are all about the same and have the same mph, but they shouldn't because they are turning thru a different final drive.

You need to multiply the gear ratio x the final drive ratio to get the "apparent" equivalent final drive ratio at an equivalent 1:1 gear ratio. Right?
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