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Lachute Legacy GT - That's the way to do it


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Lachute Legacy GT 05

 

http://www.lachuteperformance.com/products/pimages/1/2/212-1-1.jpg

 

 

Here is our latest Legacy GT to go out of the shop!

 

- Lachute TurboBack exhaust - Lachute Up Pipe - Lachute Fuel Rail kit - UMS Headers - Ecutek Remap - K&N Air Filter - STI 6 speed transmission - STI clutch and flywheel - GEMS 7 way diff controller - DMS 40mm 30 bump adjustment and height adjustable - DBA 4000 rotors all around - Porterfield Brake pads - KVR SS Brake lines - ADR 17” wheels - Pirelli studded tires for winter - Bridgestone S03 Potenza for summer

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Schweeeet....

 

+1 for ABP. :)

 

-A

<-- I love Winky, my "periwinkle" (ABP) LGT! - Allen / Usual Suspect "DumboRAT" / One of the Three Stooges

'16 Outback, '16 WRX, 7th Subaru Family

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Try their "Project Cars" link. :)

 

I'd love to see some dyno figures.

 

-A

<-- I love Winky, my "periwinkle" (ABP) LGT! - Allen / Usual Suspect "DumboRAT" / One of the Three Stooges

'16 Outback, '16 WRX, 7th Subaru Family

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sweet- where did you find this? I wonder what the dyno figures are?

 

Lachute Subaru is a dealer about 1.5 hours NE of Ottawa, or 45 min. NW of Montreal, and is well known in these parts for being very mod-friendly. They sponsor a couple of teams in the Canadian Rally Championships.

 

Andy

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What does it take to get the STi six speed to work? Does it just bolt into the rear diff? What kind of driveline are you using, Impreza STi or LGT?

 

I'm guessing you can't replace the rear end with Impreza STi parts, so I'm guessing the 6spd bolts up to the rear end at either the rear diff or the center diff.

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nKoan... Wha???

 

The STi 6MT contains the center and front differentials. The rearward driveshaft exits from the transmission's tail cap, and then to the yoke of the rear differential housing. The front of the STi's transmission bolts to the 2.5 block the same way it does to the same block on a WRX STi.

 

I would think a oem driveshaft, an STi driveshaft (less likely) or a custom length driveshaft with the appropriate trans yoke, and u-joint to connect to the rear diff yoke. I am not sure that the rear differential housings are all that different between the different models.

 

The rear diff housings all have a driveshaft input, and two half shaft outputs, and various pinion/ring gear setups and possibly Limited slip diffs inside. It would make sense for them all to be the same casing.

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nKoan... Wha???

 

The STi 6MT contains the center and front differentials. The rearward driveshaft exits from the transmission's tail cap, and then to the yoke of the rear differential housing. The front of the STi's transmission bolts to the 2.5 block the same way it does to the same block on a WRX STi.

 

I would think a oem driveshaft, an STi driveshaft (less likely) or a custom length driveshaft with the appropriate trans yoke, and u-joint to connect to the rear diff yoke. I am not sure that the rear differential housings are all that different between the different models.

 

The rear diff housings all have a driveshaft input, and two half shaft outputs, and various pinion/ring gear setups and possibly Limited slip diffs inside. It would make sense for them all to be the same casing.

 

I guess my question really was if the R180 in the STi caused problems with the R160 in LGT (and assumption, actually).

 

My roomate had some issues trying to get a 6MT into a bugeye WRX because of the rear differential. It had to be replaced with an STi diff, which it turn meant we had to replace the half-shafts, uprights, hubs, etc. I'm guessing this wouldn't work due to the uprights being different (again, another assumption). The issue of the driveshaft was also an interesting one, since the 6MT is bigger, the driveshaft is smaller. That was more of a problem with sourcing, though, then figuring out which part to get.

 

I tried to word my question around my two assumption, but I guess everything came out pretty garbled.

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I was having a little trouble with that. It sounded like you were thinking that the transmission bolted directly to the rear differential.

 

I would think that a place like DriveShaft Specialists, or someplace similar. could fabricate driveshafts and half shafts with the appropriate ends. It would probably be easier to fab a custom driveshaft with the appropriate trans yoke for the 6MT, and the appropriate u-joint for the legacy rear end. That would probably be easier than completely re-fitting the rear suspension and drivetrain...

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The STi has a larger rear differential and, more inmporantly, it has a different gear ratio. You can swap the ring and pinion gera, but most people swap the whole case because it is much easier (BTDT on another car). You need the tranny and the axles because they are a different size. The real problem is the length of the axles, the STi has a different track than the Legacy. You also need the driveshaft as mentioned and I am not sure if it wil fit. If you want the DCCD to work you need it's controller as well. Chucktoo looked into the whole swap and concluded that it wasn't going to be easy to get axles that fit. Putting the tranny physically in the car is easy.

 

The real question though is, why? It will not make the car any faster and the Legacy tranny has not been shown to be weak.

 

Figure cost at at least $6,000.

 

Rich - you are heading in a bad direction :lol:

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