Heres a COPY of a post from Gunzo a member of evoxforums.com on the TC -SST and its titled ...........Known issues ( potentialy concerning imho)

Known issues

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SST may overheat in traffic jams or slow downhill drives

Twin clutch is disconnected in D when you either step on the brakes or the accelerator at low speed
Twin clutch is SEMI SLIPPED when you're not stepping on brakes (to simulate automatic creep) or accelerator
Prolonged semi slipped TCSST in traffic jams will cause overheat of the gearbox, requiring you to stop one side and shutdown the engine ..

Mitsubishi suggests to go neutral in such circumstances or step on either accelerator or brakes and don't allow creep. They will not be fixing this issue..

This is extracted from the Japanese forums ..

Sticky this if you like MODs .. coz I'm sure alot of guys will be crying foul when you get the MRs on the roads ..
__________________
7th Generation Evo Auto
1st Generation SST
Best of Both Worlds

Cheers
Michael

 

Repost! See the previous page.

 

Already discussed. It has been determined that the extra waiting period of the MR was to fix these issues with the TC-SST, and the efforts have been successful. What you have there is old information which has since been nullified. None of the MR owners will have to experience roadside cooldown times. Sorry.

 

I hope you're right .. but probably unlikely ..

The issues you mentioned were regards to hard driving .. not daily driving ..
Its an issue with the design .. not a fault in programming ..
There's an update flash for JDM SSTs for occasional stalling when engaging the drivetrain though ..

And for your information .. this 'old' information is as recent as May 2008 ..
So if they attempt to fix this .. you guys will never get the MR til 2010 ..

Only doubt I have is .. how did VW got around this issue ?? Or VW also had this issue ??

 

I don't know about that guy, but I heard this months and months ago. Back in November, they were talking about MR delays because of TC-SST overheating issues. It seems those issues are now resolved with the release. I don't here NZEvox complaining about overheating and shoulder cooldown sessions, do you?

 

Yes in normal mode as you are slowing the clutch stays engaged whether you are breaking or not till about 1200 rpm. as you are sitting at the lights with your foot on the break it is disengaged as soon as you take your foot off the break it semi engages and creeps forward.
If you are in sport mode it changes down at about 3000 rpm so sport does supply more engine breaking. But once your are in 1st and still slowing it reverts to the same as normal.
I have been in what I would consider the worst case scenario where traffic is moving at about 10 kph start stop for about 1 hour. the cluch must have engaged and disengaged a few hundred times and I though to myself that in my ix the clutch would have been been very grippe (It sort of got that way after 5 or 6 stop starts).
But the x did not change in the way it engaged or disengaged and no hot smell and no warning lights came on.

 

I do not know why they are delaying the US MR. I ordered mine in NZ last august knowing it would arrive in feb 2008 and it did. I do know MMCNZ order 22 sst's and only 9 where supplied. The reason given was strong domestic (Japanese) demand.
If they had a concern about the sst transmission they would have delayed its local release as well. I think they just can not build enough of them.
It is built in the same manufacturing line as standard lancers. It produces 1 new car every 1 Min 30 sec but not all are evo's and of those not all are sst's

 

The first Evo X RS have now arrived in New Zealand for the rally teams. They are absolutely strippers with no air conditioning, no electrics or sound system and a simplified center console.
I agree with the previous post in that Japan can not build enough SST's and are behind even on RS production.

 

He's not the only one that drives SST too you know ..
The issues YOU HEARD mentioned are on track .. That delayed the initial launch of the SST to JAN 08 in Japan..

I think I posted this on another forum .. the delay was NOT an issue with the gearbox .. rather the SUPPLY of gearboxes ..

And I believe the engineers replied in the best possible way .. it MAY and it SHOULD .. not IT WILL OVERHEAT..

it is not the jam that cause the overheat .. it is the method in which the jam caused the gearbox to move and stop that caused the issue .. The guy in question let the car coast with the traffic in D .. so he was at half clutch for a very long period versus your start stop ..
If you get any smell from a wet clutch .. you're really in big trouble

 

so basically the guy let the clutch slip for an extended period of time. of course it's gonna overheat. imo it's not really a design problem so much as an operator misuse issue. perhaps it's mitsu's mistake to not emphasize NOT to let it slip like that.

 

On my car the clutch stays engaged until about 1200 rpm whether or not you have your foot on the brake or not and at 1500 odd rpm(In normal) it will down change so you only hit that 1200 rpm point in first gear. It is about 10kph. So when is it at this point over and over you feel it engage and disengage over and over as you keep dropping past this point due to traffic. There would be no other reason to. When you are in drive it is either engaged or disengaged never sits at 1/2 even if you are "coasting". The only thing I can think of to cause it to over heat was if the other owner was doing unnecessarily hard launches over and over again . Maybe showing off or playing with his new toy ?

For all you technical people out there. If their are major overheating issues then why did Mitsubishi not go back to engineering 101 and fit an external gearbox oil cooler ? I will tell you know why because unless you are abusing the crap out of it .It's not an issue. The Mitsubishi engineers are not stupid if there was a problem and a $40 cooler would have fixed it they would have fitted one don't you think.

So if there is a fellow SST owner out there that has suffered this over heating issue then please come forward and shed some light

 

Well.. the changeover is pretty smooth . .so you won't know whether you're 1/2 clutched or totally engaged ..
It was NOT LAUNCHING that caused the issue ..

Finally the ATF cooler is ON THE PASSENGER SIDE of the bumper duct if you have the right hand drive vehicle.. so yes YOU DO have a "$40" fix in your car about the same size as the oil cooler ..

NZEvox, you don't have to be so defensive about the SST .. I drive one too .. its just one of the issues that crept up in Japan and I thought people should know .. .. Chill

 

Sorry I came across defensive as I really am not.
I will see if there is a cooler on my car.
If the manufacturer let the clutch in 1/2 way why would they do it ? It again would not make sense. All so you may want to up date your profile as it still says you drive a 7 cheers

 

Seems to me bottom line is don't drive your SST like it's a pure automatic. Drive it like an enthusiast who knows it bad for a clutch to be slipped for prolonged periods of time. In stop-and-go traffic, use the brake, use the gas, use the brake, use the gas, and don't plan on using clutch slip to pull you forward in traffic.

Nuff said?

 

In your 8 or 9, you can also let the clutch out partway until the disk just starts to ride the flywheel and the car creeps forward. Go ahead and do this for an hour straight, then come back here and post how Mitsubishi produced a design flaw that allowed you to toast your clutch. (Oh wait, those threads already occurred back from 2003-2006)