Honda-guy's assumption about the gears is correct; they are narrower but only on 3rd-6th.

True, 1st, 2nd and the final drive are massive and shouldn't give people problems but the other gears are quite a bit narrower than the 5 speed.

As for strength, the transmission gears are case hardened and shot peened. Even more important is the shaft spacing of the 5 speed. It's much wider and this will make for a huge increase in the durability of the transmission.

Now the 6 speed could hold up as well as the 5 speed if the material the gears are made from is of high quality. This will require a burn-off to know what Aisin used.

The 6 speed is a little heavier but not by much and most of that weight is due to the massive center diff.

I'll try to post some photos of the major differences between the 5 & 6 speed when I get a chance.

Jon@teamrip.com
http://www.teamrip.com/Evolution.html

 

The cost of a new MR transmission and all the parts necessary to swap will cost $4500. We will buy the core for up to $800.

A nearby Mitsubishi dealership who we trust can R&R the transmissions for $675

 

Not as of yet but I'd estimate the transmission capable of 500ft.lbs of torque without a problem.

Jon@TRE

 

I gotta put in my two cents.
A modified EVO has such a broad torque curve that the 5-speed is a perfect fit. It makes awesome power from 3000rpm's to redline (8000rpm's w/flash). Having more gear choices is great if your engine has a narrow power band (Like a Honda w/VTEC). I think the 6-speed could actually be counter-productive in some circumstances. The only real drawback to the EVO 5-speed is that 5th gear should be taller (less rpm's) for better gas mileage...

 

EVOeight, you're right, except for a stock turbo car going up the esses at Watkins Glen without going past 8k rpm's. If you're carrying good speed up the hill, you're either bouncing off the limiter in 4th gear when you're halfway through trackout or bogged down if you're in that tall 5th gear. Having other options is preferable, at least in this case...

If you boys want a better cruising gear, I believe TRE offers (or will offer soon) a 5 speed gearbox with a taller final drive (4.11 or lower), which should get cruising RPM down to something a little less buzzy.

Regards,
Joe

 

I agree with this and to be honest if you spend the money on getting your 5 speed built and get the drag race gearing you are looking at spending about $1750. Add in round trip shipping service for $175 and you have $2000 to spend on the engine, suspension or some other project.


Now the gearing is not for everyone; it's too tall for those who autocross and it may not work well on a road course because the spacing is wider but it'll work perfect for those who drag race or have a stroker engine under the hood.

We'll have more input on the 6 speed's durability shortly.

Hope this helps.

Jon@TRE
http://www.teamrip.com/Evolution.html

 

It's available now

Jon@TRE

 

What about a 4.89 or some ratio in between the stock 4.59 and 4.89?

 

Jon I've known the 5 speed had stronger gears and was a stronger tranny, even Mitsu came out during the Japanese launch of the EVO 9 and said same thing you are saying ... that the 5 speed could hold more torqe ... I am interested in knowing how much torque the 6 speed can hold ....

 

Show me the pics, show me the factory manufacturer specs, show me something that can back that up, otherwise is just you saying that the gears are bigger.

You probably haven't even seen the gears yourself

 

 

please, where is that article that everyone talks but no one can really show me?

I already posted pics of the tranny, pics of the clutch and I have posted a few links showing why the fastest meanest and sportiest EVo from factory comes with the 6 speed.

Can you just post one single thread from Mitsubishi that says that the 5 speed is "better" or are you going to keep imaking things up?

Thanks

 

He clearly doesn't know whom he's talking to ...

 

https://www.evolutionm.net/features/newsitem/90

Read No.3 Engine and Transmission, bullet no. 3 ....

Obviously you don't know who "Gears" is or else you wouldn't be saying what you have .... he is a DSM tranny guru and has seen both the 5 speeds and 6 speeds inside out!

If you didn't notice, I have the 6 speed tranny but knew what I was getting into before I bought it

 

The only way GEARS hasn't seen the gears himself is if he's blind!