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Old 07-13-2003, 01:34 AM   #1
stilesg57
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Default Has ANYBODY busted an STi 6spd?

Hoping this goes unanswered (holds breath)...

I'm scared to death for my tranny, it is by far the weak link in making serious power on this car. It just hurts that much more that there aren't any affordable tranny options out there and many of the expensive ones have busted too.

Yesterday I had the pleasure of watching an STi peel all the wheels when we lined up at a stoplight. After a bit we got next to each other and at about 40mph he reved the hell out of it (could hear it bouncing off the limiter) and dumped the clutch in some gear (probably 3rd) and proceeded to peel all the tires again . I can feel the weakness of my tranny - it wouldn't survive one shift or launch like that. Are the STi's truly bulletproof?

Someone please tell me if that guy's going to ruin his tranny or if the 6spd actually has that kind of abuse capability. If the 6spd is really that bulletproof I just may skip messing around with gears and just save up for a real gearbox. People with STi 6spds and experience with these trannys, let me know. Thanks
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Old 07-13-2003, 03:14 AM   #2
Butt Dyno
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I'd be curious whether or not anyone has busted the RA gearset in the otherwise stock transmission...

-bd
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Old 07-13-2003, 06:45 AM   #3
Karl
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Here's a thread in the northeast forum. Someone saw an STi sitting at a dealership. (just ignore the pissing match and jump to the last post for a little detail.)
http://forums.nasioc.com/forums/show...hreadid=389264
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Old 07-13-2003, 07:50 AM   #4
Cacophony
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omg Stiles.. what kind of jackass would already be abusing the **** out of his car like that.

I don't care how strong the 6 speed is, a jackass pulling **** like that in a new STi deserves to have gear fragments embedded in his back passage.
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Old 07-13-2003, 09:48 PM   #5
ebeck
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I know of 1 where the GB is making noises. It is going to the dealer to be evaluated and checked out. Problem with the GB yes. Broken, I do not know. Noises in the GB are not good though.

Rally cars break them sometimes. Never heard of "civilian" doing do. A 7500 clutch dump will break them if you do it enough though. I beleive if you did enough research, you would find it is 2nd gear that will break on those gearsets. Probably not find 1st broken. Just a hunch. Both break in the US model.
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Old 07-13-2003, 11:12 PM   #6
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I've abused mine alot over the last few months and it's never complained. I've been running in excess of 300hp for the whole time I've had it. (~270whp) and using the UTECs launch control. Glenn Wallace posted a press release from Pat Richard stating they were going back to the standard 6MT because of reliability problems using dogbox transmissions, in their rally car. You can break anything if you try hard enough.
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Old 07-14-2003, 04:17 AM   #7
totoherbs
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Quote:
Originally posted by ButtDyno
I'd be curious whether or not anyone has busted the RA gearset in the otherwise stock transmission...

-bd
the 5 speed ra.. ya they have blown... not as much because there are fewer and the people who get them know what there doing. As for a 6 speed there rated at like 350-400 lbs of tq right?
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Old 07-14-2003, 09:35 AM   #8
Butt Dyno
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Quote:
Originally posted by totoherbs
the 5 speed ra.. ya they have blown... not as much because there are fewer and the people who get them know what there doing. As for a 6 speed there rated at like 350-400 lbs of tq right?
Where have you seen that? If the main problem in the stock set is blowing 2nd gear, I would think that would be less likely with 1 taller and 2 shorter... I am not worried about my tranny anymore, but if it goes, I am going to very seriously consider this...

-bd
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Old 07-14-2003, 09:48 AM   #9
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If you take a look at this thread:

http://forums.nasioc.com/forums/show...hreadid=379446

You'll see that all the gears look pretty much the same size, except 1st is much wider - that should stand up to hard launches pretty good. Actually, 2/3 look a little wider than 4/5/6.

If you're worried about munching 2nd, I would suggest a lightweight flywheel. A quick 1-2 shift from redline doesn't give the stock flywheel enough time to spin down for a rev match, so when you let the clutch out quick, all the energy from the flywheel slams into 2nd gear. A lightweight flywheel will spin down fast, and put less force on the gears when shifted abruptly.

Kevin
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Old 07-14-2003, 10:53 AM   #10
HOK
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there has been no well documented cases on the internet... but it has happened...
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Old 07-14-2003, 11:09 AM   #11
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Quote:
Originally posted by ButtDyno
Where have you seen that? If the main problem in the stock set is blowing 2nd gear, I would think that would be less likely with 1 taller and 2 shorter... I am not worried about my tranny anymore, but if it goes, I am going to very seriously consider this...

-bd
I know of a copple but they push big power... and its also what i plan on getting unless 6speeds drop. Then again I hear of a new 5speed on the new legacys so might want to look into that.
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Old 07-14-2003, 11:17 AM   #12
Butt Dyno
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The Legacy probably wouldn't be close-ratio which is one of the things I'd want in any transmission I went to... that's a good thing to keep your eyes open for though, definitely.

-bd
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Old 07-14-2003, 06:37 PM   #13
downshift1
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Talking I broke my 6MT!

But it wasn't gear failure.

The plug for the clutch release fork pivot pin vibrated out and the pin cocked in the bellhousing and broke it.

I took the cracked pieces and welded them back together and reinforced them and haven't had an issue since.

-Dylan
"If it's gonna break, I'll break it!"

P.S.- I have an extra 6MT for sale
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Old 07-14-2003, 06:59 PM   #14
1quiksoob
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Is the broken one the one for sale
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Old 07-14-2003, 07:09 PM   #15
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Nope, that one is still in my car running perfect.

The one I have for sale has less than 100 miles on it, it's mint.

-Dylan
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Old 07-14-2003, 07:54 PM   #16
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$?
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Old 07-15-2003, 02:19 AM   #17
stilesg57
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Quote:
Originally posted by Red Rocket
If you're worried about munching 2nd, I would suggest a lightweight flywheel. A quick 1-2 shift from redline doesn't give the stock flywheel enough time to spin down for a rev match, so when you let the clutch out quick, all the energy from the flywheel slams into 2nd gear. A lightweight flywheel will spin down fast, and put less force on the gears when shifted abruptly.
I thank you for the imput, but I'm not interested in a lightened flywheel. I know rev-matching is harder, but for a street car I like the low-end and smoothness of a stock-weight one. I'm also a little concerned about engine balancing issues, but that's another can o' worms...

Honestly, it's not the shifting that concerns me. I shift very nicely, never powershift, and always ride the clutch out a tad longer than neccessary between 1-2 and 2-3. Certainly different than most trannys where you let the clutch out slowly only when starting in first and then every upshift is in/shift/out - I kinda miss that A friend of mine who's really into drag racing gave me some good advice that's really pertainent to the WRX: make the clutch the "fuse" in your drivetrain rather than the transmission; it's a hell of a lot cheaper that way.

What I'm worried about isn't banging the tranny on a shift, what scares the piss out of me is when I hear about guys with only 270whp or so doing a nice, smooth, WOT pull in 3rd...and the gear just strips on them. That freaks me out, cause I don't know what I'd do if I was just cruising and punched it in 3rd and the tranny stripped, no matter how well I shifted it.

Well, it sounds like the 6spd for all practical purposes will handle power. i caught up to that guy at a light again tonight (small world) and got to talk for a min or two. He had a WRX and said the tranny just feels so much beefier. This is probably the route to go then...

I don't want a tranny I can dump the clutch at 6k on. I want a tranny that I will still shift nicely (maybe a little harder...) but won't just strip gears when I feed 350whp through it. Seems like the 6spd's the way to go. Any other ideas?
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Old 07-15-2003, 01:12 PM   #18
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Quote:
Originally posted by Silver '02 REX
$?
PM me I don't want to upset any vendors. (Cheap)

-Dylan
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