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Old 10-17-2001, 09:55 AM   #1
Simon Lines
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Default 6 Speed into GC8?

Hi Guys
Any of you tried to fit the new STi 6 speed into a GC8 yet?
Cheers
Simon
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Old 10-17-2001, 10:06 AM   #2
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We don't even have the STi over here yet. I'd have thought that you guys would have been able to try it out first
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Old 10-17-2001, 12:20 PM   #3
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The cost is one thing making this not widely done.
But I was told Cobb Tuning did something like this already. not sure.
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Old 10-17-2001, 03:31 PM   #4
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I know of someone that did it with a rallycar, they post here. Can't recall what they said about it... but my first thought is if you reshape the floorpan with a large blunt object in a rally car it's no big deal. In a street car, maybe.

Custom driveshaft, I remember that for sure.
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Old 10-18-2001, 04:52 AM   #5
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Yea, that’s what I figured too. It's not something we would try, there's no point for a rally car and it's too extreme for our road car activities. The new tranny is still a bit too new for them to be available at sensible money. I think it would be a serious mod for GC8 turbo though, you’d need the driveshafts and rear diff too.
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Old 10-18-2001, 05:30 AM   #6
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Unless something is significantly different about the GC8 turbos (ie: 2.0 or 2.2L at max versus the 2.5L motors over here), they will break just as common as normal transmissions in our GC8's.
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Old 10-18-2001, 07:07 AM   #7
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Quote:
Unless something is significantly different about the GC8 turbos (ie: 2.0 or 2.2L at max versus the 2.5L motors over here), they will break just as common as normal transmissions in our GC8's.
How can you say that? Have you tried the new six-speed in a GC8 with high power?

I'm not trying to be confrontational, but the 'box is all-new. Unless you have empirical evidence to show that it's not any stronger than the five-speeds, it's misleading to say something like this.
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Old 10-18-2001, 09:56 AM   #8
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I can confirm that it's much stronger than the 5 speed unit
Cheers
Simon
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Old 10-18-2001, 11:01 AM   #9
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Impreza Magazine has an article on how to put it in...to bad I cant read Japanesse.
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Old 10-18-2001, 11:21 AM   #10
Simon Lines
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Can you scan it and e-mail it to me, i may be able to help with a translation
Cheers
Simon
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Old 10-18-2001, 05:33 PM   #11
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I will try, do you have a fax number?
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Old 10-18-2001, 09:16 PM   #12
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Mr Lines, i'd be more than happy to install one on my GC8 if you can send one over to me


[email protected]
www.kartboy.com

ps: nice job on the Prodrive Ferarri
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Old 10-19-2001, 04:34 AM   #13
Simon Lines
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Laughing,

How about you send me one and i'll fit it in my modified Jap spec GC8 WRX RA?

my fax is +44 1676 536 210

Just for info, it's about 35kg's heavier and nearly 6'' longer

Cheers

Simon

edit - yea, that Ferarri is just STUNNING when you see it for real, and the noise!!
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Old 10-19-2001, 04:40 AM   #14
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It'd probably be easier to get a Prodrive Ferrari into the US than a 22B


Ben
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Old 10-19-2001, 10:28 AM   #15
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I was at Road Atlanta for the Petit LeMans. Yes, the Prodrive Ferrari sounds incredible. It just screams.

What surprised me most about the race was how quiet the Audi R8 is.

Ross N.
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Old 10-19-2001, 10:41 AM   #16
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so if its longer we're looking at new driveshafts, different tranny mounts (probably), axles in front (minnumum), different rear drive ratio (easier to swap rear end) unless the final drive ring and pinion are the same...
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Old 10-19-2001, 10:59 AM   #17
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Screams is the word, you should see the dyno figures too...

For the 6 speed, we'll certainly need the main driveshaft and rear diff (they are completely different) It may be possible to use the front driveshafts with a little mod, the rears will probably be ok though. I think the clutch is subtly different too, then there's the bellhousing - engine connection to think about. It will be a lot of effort, personally I think it would be a lot of fun though

Simon
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Old 10-21-2001, 08:05 PM   #18
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From my days in the jeep world I have picked up quite a bit about tranmission replacement (many jeep transmissions are knowm to break under stress). From what I have heard, to retrofit an STi 6-speed into an American spec Impreza would require a lot of work, granted, but I think it would be worth it. I am assuming it will fit under the car with no floorpan modifications (correct me if I am wrong here). The belhousing from a Jap-spec trans would be needed. This should bolt right up to the engine, seeing how they are the same block. You may need a different clutch, but that is a minor detail. Because it is a different lengh, custom driveshafts will be needed probably both front and rear. With custom driveshafts, they should be able to make the axle end fit to the stock axle. Or you could get the Jap-spec driveshaft and the Jap-spec rear end (if the output yolk on the differential is different). I am not sure where the front driveshaft comes out, (don't own an Impreza and have never sen under one. I just think they are sweeeeet) but if this is different, you may need the Jap-spec front end too. (whenever I refer to "Jap-spec I mean the cars with the 6-speed in them). lots of work, but not too much. The prices I have been hearing, however are incredble. This would be fun.

Hope this helps
Joe

P.S. New shifter and linkage too.
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Old 10-22-2001, 12:25 AM   #19
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Sounds almost like my manual tranny swap except the fact that there seems to be quite a bit of variances in driveshafts, diff's and axles.
BTW Simon I have been hearing rumors of some hopped up STi 7's that have gone through 6spd's and decided to go to 5 spd dog boxes because the 6spd was only marginally stronger.
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Old 10-22-2001, 03:08 PM   #20
#522
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At the Prescott Forest Rally, some of us SW guys had a chance to talk with Scheible (sp?) Lovell and a prodrive mechanic (I can't remember his name, but I think it was Ed). I think one of the first questions was how is the six speed and can this tranny swap be done? He said the new 6 speed is very tough and you could put it in a GC8 with some pretty extensive bell housing modification. You will also need to get the clutch, flywheel and driveshaft and don't forget the shifter, and maybe some other stuff you guys already mentioned. I think to expect 11K US is a good starting point.

The guy that installed one into their US wrx rally car is Prorally WRX on the boards. He is local in Phoenix and said they can do it in a GC8. If you get him on the boards, ask how much and what's involved. He is very knowledge able and can answer any question.

Ron
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Old 10-23-2001, 06:37 AM   #21
Simon Lines
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Hi Guys

I guess most of you realise i work for Prodrive... Knowledge is not the problem i have, it's trying to find the damm tranny, i just wondered if any of you guys had managed to track one down for sensible money.

Laughing, Ed is not a mechanic he's the Prodrive account manager for the US rally program...

I look after road car parts and Ed looks after motorsport, i guess he's in for some stick now, Ed the mechanic...

Cheers

Simon
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Old 10-23-2001, 12:40 PM   #22
#522
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D'OH
Hmmm, I'm actually just an idiot. I didn't even look at your ID on the left. Could I have gotten his name wrong? Anyway, for an account manager, he was good at fielding questions and was a nice guy. Maybe he didn't refer to himself as a mechanic, I just knew he was from Prodrive and assumed. You can give me crap instead

Anyway, the local team http://www.alternativevehicles.com* does have at least one tranny I know of they imported. The guy on the boards is ProRallyWRX and his name is Justin. Shoot him an email to find out what it cost them.

A quote from this thread: http://i-club.com/forums/showthread....threadid=87852

6 speed love

Drove the WRX last night with the 6 speed for the first time. Let me just say that the response is excellent and the gears really wake the car up in the corners.


Justin

So much fun.



Hope I helped THIS time.
Ron

Last edited by #522; 10-24-2001 at 11:38 AM.
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Old 10-23-2001, 02:36 PM   #23
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I'm pretty sure Justin put the six-speed into a GDA bodied car, not a GC8. I know the rally car he was building was a GDA. Maybe he's done the swap in a GC8 that wasn't his rally car.

Maybe he'll chime in and tell us for sure.
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