6spd Swap Details Thread

Flywheel, Clutch, Transmission, Axles, etc...

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Legacy777
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Re: 6spd Swap Details Thread

Post by Legacy777 »

Updated the first post with install information regarding the DCCD Pro controller.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm

Dominator
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Re: 6spd Swap Details Thread

Post by Dominator »

Josh, this thread is great. I'm planning on swapping a 6-speed into my SS soon. I'm bookmarking this page for sure. I love how meticulous you are with your photos and write-ups.

Legacy777
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Re: 6spd Swap Details Thread

Post by Legacy777 »

You're welcome :)
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

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chochocho
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Re: 6spd Swap Details Thread

Post by chochocho »

What front axles would fit after the swap?

Looks like both my front drive axles are leaking/ripped

Legacy777
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Re: 6spd Swap Details Thread

Post by Legacy777 »

If you put in the axle stubs, the stock Legacy axles work fine.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm

chochocho
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Re: 6spd Swap Details Thread

Post by chochocho »

Legacy777 wrote:If you put in the axle stubs, the stock Legacy axles work fine.
so these items plus the driver and passenger side front axles for a 91 legacy?

6spd axle stubs - Qty. (2) - 38415AA110
Axle stub circlips - Qty. (2) - 805329010
LH axle seal - Qty. (1) - 806730042
RH axle seal - Qty. (1) - 806730041
LH axle
RH axle

Legacy777
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Re: 6spd Swap Details Thread

Post by Legacy777 »

You don't necessarily need to replace the axle seals, but it's probably not a bad idea. The down side is that you have to unscrew the bearing caps to replace the seals. So it's kind of your call. If you're going through the hassle, I'd also suggest replacing the outer o-ring on the bearing caps.

As for the bare minimum, you need the stubs & circlips.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm

czei
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Re: 6spd Swap Details Thread

Post by czei »

Thanks for documenting this! How can you use the stock legacy rear diff when the stock is 4.11 final drive ratio and the 6MT is 4.44?

Anyway, I'm to decide between installing an LSD and stronger center diff into a 5MT or just buying a 6MT. The target application is rallyx and maybe stage rally in the future.

5MT:

* Can control front LSD pre-load and setup just for dirt.
* No car mods needed to make it fit.
* The extra strong center diff should be fine for dirt only.
* Not as strong or durable as the 6MT
* Not sure on price of having qualified transmission guy do the install.

6MT:

* Requires some car mods to get it to work.
* Maybe not as aggressive for dirt?
* DCCD would be more flexible for combined street/dirt
* Seen some used versions between $2,500 and $4,500.
Last edited by czei on Wed Mar 25, 2015 6:48 pm, edited 1 time in total.

Legacy777
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Re: 6spd Swap Details Thread

Post by Legacy777 »

The stock turbo legacy rear diff is 3.9 and so is the 6MT.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm

lor
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Re: 6spd Swap Details Thread

Post by lor »

Hello guys!

Have somebody info what is the wire size at the dccd?
I would buy connector to my dccd but i dont know witch size i need.
https://www.corsa-technic.com/item.php? ... ory_id=105
Yeh bigger is better i know.

Thanks and regards
lor from Hungary

Legacy777
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Re: 6spd Swap Details Thread

Post by Legacy777 »

Hi Lor,

The current going throught he DCCD controller isn't very much. I would suspect the stock wiring is around 20 gauge. I think the smallest I have and typically use for applications like this is 18 gauge.

The only issue I could see using the larger wire (18 gauge) is that it wouldn't fit in the connector properly.

Hope that helps.
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm

tkammen
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Re: 6spd Swap Details Thread

Post by tkammen »

Hi, I will be installing a 6 speed into my 92 soon but have some questions. I am using GD subframes and an R180 rear diff. Will my 04 STi driveshaft work with the 6 speed and R180 in the car? Someone told me I would need to extend the driveshaft by 2.5 inches. I don't understand why I would need to do that. Wouldn't it be the same length as a GD?
2005 WRX
V9 Engine Swap, V7 6spd, VF37


1992 Legacy SS

2018 Chevy Colorado Duramax

mike-tracy
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Re: 6spd Swap Details Thread

Post by mike-tracy »

tkammen wrote:
Tue Jun 30, 2020 3:29 am
Hi, I will be installing a 6 speed into my 92 soon but have some questions. I am using GD subframes and an R180 rear diff. Will my 04 STi driveshaft work with the 6 speed and R180 in the car? Someone told me I would need to extend the driveshaft by 2.5 inches. I don't understand why I would need to do that. Wouldn't it be the same length as a GD?
The automatic 1st gen legacy driveshaft fits perfectly with the 6mt. So long as you swap the flange from the existing r160 onto the new r180. Subaru made minor adjustments in length with each generation of cars. It corresponds more or less to the changing wheel bases between generations and models also.
1992 Legacy SS 5mt, build in progress
Josh Colombo wrote:
Mon Jan 14, 2002 10:23 am
Wait....I'm confused now.

tkammen
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Re: 6spd Swap Details Thread

Post by tkammen »

Alright. Once I get all the parts into the car I will measure what length driveshaft I need. In my GD WRX currently is a DSS Aluminum for a 6 Speed. I was hoping to reuse that on the Legacy.
2005 WRX
V9 Engine Swap, V7 6spd, VF37


1992 Legacy SS

2018 Chevy Colorado Duramax

vtsportscar
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Re: 6spd Swap Details Thread

Post by vtsportscar »

The 04 sti driveshaft with the rear section extended 2.5” fits in my 93 Legacy L with the 6spd, R180, gd cross-members. I’m interested to test fit the Outback auto driveshaft I have to see if the length is also correct for the 6spd and can work as a spare in a pinch if I swapped diff flanges. Sounds like a good project for the off season. Right now I’m just excited to have the old girl back up and race ready again! Been since March of 2018 she saw competition last.. Labor Day weekend trackcross will be her long awaited return :-D
Vehicles:
White 1993 Subaru Legacy L Sedan w/ EJ22T/6spd/R180/Td04/AWIC & much more - Autox & ice racer
Black 2005 Forester XT Premium 5spd - fiancé’s daily
Pear White 2001 Infiniti G20T 5spd - daily driver

Legacy777
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Re: 6spd Swap Details Thread

Post by Legacy777 »

Yeah, let us know what you find out and good luck with the race! :)
Josh

surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT

If you need to get a hold of me please email me rather then pm

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