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Old 10-09-2008, 03:45 AM   #1
RallyLegacy
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Default EJ205 vs EJ255 abuse on stock Legacy L tranny

So I plan on doing either a JDM EJ205 or EJ255 swap into my manual 97 Legacy L. Yes, I plan on keeping the stock tranny. Six months ago the tranny that came with the car died, so I replaced it with a JDM tranny out of a 98 Legacy L. The tranny currently has about 45k miles on it and mechanically has zero issues.

Now for the questions:

1. Is this tranny more comparable to the GC 2.5RS tranny or the 1.8L Impreza L trannies (my legacy has the 2.2L) in terms of stregth?

2. Will the life of the tranny be impacted more significantly with the increased overall torque of the 255, or will it last almost the same as if the car had a 205?

I plan on running a stage 2 tune (tbe & reflash) and getting a cluch that will be able to just hold the power so the tranny will be exposed to as little shock as possible.

Thanks
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Old 10-09-2008, 08:36 AM   #2
Storm
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You'll be making more torque, which will make more work for the gears, but depending on how you treat it, it may last quite awhile. The Legacy L trans has a taller 2/3/4 (and maybe 5th ratio than the Impreza 1.8 trans, which has the same ratios as the 2.5RS (except final drive ratio). With that in mind, the shorter gears seem to hold more torque than the taller gears and may last longer.

I would plan for it to let go at almost any time, but enjoy it while it holds together.
Jay
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Old 10-09-2008, 09:49 AM   #3
Jaxx
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uh jay some of the 1.8 trannys were 4.11 too

i would suspect the jdm tranny from an "L" is very similar to your stocker
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Old 10-09-2008, 10:24 AM   #4
Matt Monson
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Quote:
Originally Posted by Storm View Post

I would plan for it to let go at almost any time, but enjoy it while it holds together.
Jay
I really wouldn't expect that sort of ignorant response from you Jay. If he doesn't drive it like an arsehat it's not a timebomb. In fact, an ej255 will come with a TD04 and while it will make good torque it won't be substantially more powerful than what other guys have been putting against stock RS and L trannies for years.

The fact of the matter is that all of the early (pre-2000) trannies are the same strength of gears. It doesn't matter if it's WRX or Legacy or Ej18 powered USDM Impreza. They are all just as strong as each other with the primary difference being whether or not they got put into a push style or pull style tranny case.
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Old 10-09-2008, 05:15 PM   #5
Storm
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Hey now....I get busy at work sometimes. I'm allowed a couple brainfarts now and then! :P

Yes, some EJ18 Impreza's got the 4.11....but it was rather rare, and I'm not sure why. I could've also chosen my words more carefully about the longevity. Lord knows I'd rather be corrected by Jaxx and Matt than some other people.

The bottom line is that the OP can make it work easily. There are really too many variables to forcast the life of any trans. I would have to consider the previous life, current condition, planned use/abuse, etc...... Keeping a spare box tucked under the bench wouldn't hurt anything. That is what I was trying to convey when I typed "at any time". I didn't mean that you could park it at the store and have a tooth break off when you locked the door! I keep my spare box under the bench for piece of mind and it "got the call" early this season. Now the other one is back together and under the bench. Matt is right about the 5spd models being virtually the same as far as strength goes. I wouldn't let it deter you from going after the power you want or driving it how you want.

Jay Storm
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Old 10-09-2008, 07:26 PM   #6
Matt Monson
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I'm so glad you didn't take offense. I use the word "ignorant" pretty loosely but have found in the past that people around here take it very seriously. There's plenty of things I am ignorant about and take no shame in that.
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Old 10-09-2008, 09:54 PM   #7
Storm
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No harm...no foul. The OP got good info outta the thread. That's all that counts.

Jay
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Old 10-09-2008, 10:28 PM   #8
RallyLegacy
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Quote:
Originally Posted by Storm View Post
No harm...no foul. The OP got good info outta the thread. That's all that counts.

Jay
Yes I did, thank you guys for all the info. I guess it will just come down to the availability and price of a 205 vs 255 as to which one to get.
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Old 10-10-2008, 10:13 AM   #9
Matt Monson
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A couple of weeks back Gruppe S had a shipment of Ej255's just arrive. I don't know if they still have any left but they were $3000, crated and shipped.
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Old 10-10-2008, 11:00 AM   #10
Jaxx
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i would think the major factor would be em for the 255
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Old 10-11-2008, 02:34 AM   #11
RallyLegacy
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Quote:
Originally Posted by Matt Monson View Post
A couple of weeks back Gruppe S had a shipment of Ej255's just arrive. I don't know if they still have any left but they were $3000, crated and shipped.
Thanks for the info, but that is more than I want to spend and I already have a source for the JDM engine, ecu, and wiring for less.

Quote:
Originally Posted by Jaxx View Post
i would think the major factor would be em for the 255
I plan on getting the stock ecu with the engine and then sending the ecu off to some place like Gruppe S to have it reflashed with a US fuel map using ECUteck or something similar. If there is something different about the 255 ecu that makes them unable to flash it then I would be very interested in hearing about that.
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