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EA Tranny...behind EJ motor
Posted 06 October 2005 - 05:42 PM
I know we all hear of people saying Subaru trannies are like glass.
well i'm thinking about putting a JDM EJ20T into my RX for ice racing season.
The engine is in a Legacy Turbo, and runs. I'd like to use the RX tranny so i don't have to piss around with tranny mounts and drive shafts.
But..is the RX tranny likely to hold 250-260 hp??
Posted 06 October 2005 - 05:52 PM
Hopefully you'll place before it looses too many gears
Posted 06 October 2005 - 10:51 PM
i'm guessing driveshafts, and a custom tranny mount. Along with the master cylinder needed for the clutch.
Posted 07 October 2005 - 12:56 AM
Yeah im not sure how the old stuff mounts up so you would need custom mounts and such...the transmission might be physically larger too
Also check the Retrofitting forum for the EJ swap you may have to do Axels and the whole shebang
if you need any tips PM me
Posted 07 October 2005 - 01:03 AM
Posted 07 October 2005 - 01:31 AM
I think it'll be fine. Use synthetic oil in the tranny
Posted 07 October 2005 - 02:21 AM
The transmission mount was a piece of cake to weld up. I mocked up the tranny in the car with the engine bolted down, tacked the EJ mounts on my crossmembers, then removed the whole assembly and welded it together. You will have to run EA82T front axles to mate up with the legacy tranny. For my wagon, I had the forward section of the EJ driveshaft shortened one inch, which may be a little bit too much as far as strength - the splines don't go ALL the way into the tranny. You'll also have to get the EJ rear diff that matches the ratio in the tranny.
Posted 07 October 2005 - 09:17 AM
And all that really needs to happen is shorten the prop shaft??
I was thinking that i'd have to replace the front axles and rear driveshaft.
If it's not that big of a deal..i'll use the EJ tranny forsure. Especially since the tranny i'll be using is a Legacy Turbo tranny, which has the hardened gear set.
Posted 07 October 2005 - 10:45 AM
but iceracing... dont those always loose 3rd, honda toyota subaru, whatever you got, i think your gonna break trannies.
i guess they look the same inside, same width gears, same materials(presumably). id try it.
Posted 10 October 2005 - 10:54 PM
Posted 11 October 2005 - 07:41 AM
But...there is a point where the gears and shafts and everything inside the tranny cannot physically withstand the torque produced.
I suppose certain WJM was making close to the same power/torque levels with his 1.8L motor...and his tranny held up just fine.
However, or what it's worth. if it is a relatively easy swap...Shortening the prop shaft is no problem, if the front driveshafts slip on, and just fabbing up a mount...that really is not all that difficult, and might be worth the little bit of extra work. Surely you will spend the same amount of time mucking with that as you would fabricating an adapter plate...so it's probably a toss up
Posted 11 October 2005 - 09:39 AM
Posted 11 October 2005 - 01:40 PM
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