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Tranny questions for custom Rig.. Help


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Hey all, I'm Monsterizing a BRAT.

 

I'm building a custom sub-frame. I am literally taking EVERYTHING from a 98 Legacy donner car and building it into my sub-frame that will eventually bolt onto the underside of my BRAT. (the brat dash, steering collum and all electronics are also going and will be replaced with the doner car systems)

The Brat gets a 3" lift and the fenders will be trimmed out.

 

Whew! that all being said. The car has an Automatic Tranny (that is blown) and planetary diff. I want to replace it with the 5 speed tranny from a GT or XT and eventually the LSD from one as well.

 

The problem is I want the VCD from the GT/XT's but I don't know what the tranny number / model number is or if it's the same as all other manual gear box Subaru's of that era?

I also know that there is a difference in 98 and up because the clutch goes to a push type rather than a pull type.

Also Is the drive shaft the same between Legacy's and impreza's? (the impreza has the correct wheel base for a BRAT)

 

So, any info I can get is helpful, and if you have some tranny kit around you're selling Please let me know!

 

The end goal is a look and stance like the Tamiya RC BRAT (I already have a custom roll bar made to be like this one)

 

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Edited by dec0y13
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This is gonna be a trail ride. No heavy duty off-roading. I'm going for more of a rally setup. I have a lot of desert out here and I'm gonna be in the dunes every now and then.

 

The wheels I'm going for are 265/70/15's (currently looking at General Grabber AT2's)  These are reasonably close in size to the stock OD of the original wheels. Plus I'll be using the much heavier axles and suspension from the legacy.

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All the dual ranges I've seen can't handle the WRX engine I hope to get in this thing next year. 

Unless there is something I haven't seen dual ranges endeed with the EA82's

 

I've heard the GT trannys are quite rugged and can handle a bit of horsepower. So I had to give up on a DR tranny. (this did break my heart a bit)

I'm going all EJ on this build.

 

I better check to see what Diff I have now

Edited by dec0y13
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You won't find a specific trans number that encompasses all manuals with a 4.44 ratio.

4.44s were only found in the US in Turbo cars. US model Outback and Forester XT around 04-07ish

 

 

The push/pull clutch is non turbo vs turbo deal. Turbos generally have the pull clutch (WRX, STI, 05+LGT, OBXT, and FXT turbos will have pull clutches)

Push clutches change actuation method around 98, from cable to hydraulic, but that is interchangable. Push clutches can be either/or just be swapping the release lever and moving the pivot stud to the proper mounting hole on the case.

 

 

There are dual range units available from Australia or South America. 4.44 was an option in those but I think it was only paired with something like a 1.21:1 reduction.

There are 4.11 units that had 1.59:1 low reduction, which provides a lower overall ratio.

Some importers are now bringing these to the states with all the shift levers and cables needed for the swap. Search around the interwebz for "EJ dual range" and you can find more info on those.

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You won't find a specific trans number that encompasses all manuals with a 4.44 ratio.

4.44s were only found in the US in Turbo cars. US model Outback and Forester XT around 04-07ish

 

 

The push/pull clutch is non turbo vs turbo deal. Turbos generally have the pull clutch (WRX, STI, 05+LGT, OBXT, and FXT turbos will have pull clutches)

Push clutches change actuation method around 98, from cable to hydraulic, but that is interchangable. Push clutches can be either/or just be swapping the release lever and moving the pivot stud to the proper mounting hole on the case.

 

 

There are dual range units available from Australia or South America. 4.44 was an option in those but I think it was only paired with something like a 1.21:1 reduction.

There are 4.11 units that had 1.59:1 low reduction, which provides a lower overall ratio.

Some importers are now bringing these to the states with all the shift levers and cables needed for the swap. Search around the interwebz for "EJ dual range" and you can find more info on those.

You can also swap the d/r from an ea81 into the ej d/r

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  • 2 weeks later...

It'll bolt in, but some other things will need to be changed.

You'll need to use the turbo pull style clutch kit (the release bearing pulls the diaphragm spring out instead of pushing it in)

And you may need to swap front axles due to change in the inner joints that happened around 04-05ish.

 

No need to swap ECU.

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