Does anyone know of non-suby RWD trannys that will bolt up to a ej-20?

 

None, but there are shops that may be able to fabricate an adapter. Small Car Performance in Tacoma WA might be to able help. No one-off adapter will be inexpensive, though.

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0==WW==0
"…axles of evil…" - george w. bush

 

I just read a letter to the editor of Sport Compact Car magazine who posed a similar question. There are numerous other issues that I didn't address with my initial reply. Not only does the transmission have to bolt to the back of the engine but the clutch disc must match the diameter and splines on the input shaft of the transmission. Clutch discs can be swapped if they are the same thickness and diameter but you'll still have the compatibility issue of the throwout bearing and its travel. The magazine also suggests that the clutch pressure plate will have to be checked for fit inside the bellhousing area. The new transmission shifter will likely not be located the same as a Subaru shift lever, which operates at a pivot point on a plate in the floor.

If you really want a rear-drive tranny, your best bet is probably to contact a company that campaigns RWD drift cars to see how they modified the AWD tranny.

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0==WW==0
"…axles of evil…" - george w. bush

 

SCC or Super Street did have an article a while ago on a drift wrx that was converted to RWD. I don't remember the specifics, but it had something to do with modifying the center diff. It didn't sound difficult but well beyond my ability (or desire to have a RWD WRX for that matter). I'm pretty sure the guy races out of Raceway Park in Englishtown, NJ, but beyond that I haven't had much luck going back and finding more info. Maybe that will spark someone else's memory and they'll be able to help out more.

 

I remember seeing something similar, and I think it did indeed involve modifying the center dif, which would make sense, but if you are looking for HP gains, I seem to recall it was a very small amount, like 5 hp or something. I saw it on clubwrx a while back I think...

 

Your best bet is going to be to convert it ,

remove your center diff and ( depending on type ) you can machine or weld it up
MRT makes a replacement part that converts to RWD full time as well, but its expensive.

I dont think there is a easy way to to it otherwise, unless you have an adapter that bolts to the crankshaft to mate the new flywheel/cluch assy to match whatever trans you are going to run as odds are the input shaft to the trans wont match the subie clutch. Also check into the sandrail guys, they have adapters to run vw transaxles on a subie motor, maybe they have others as well?

 

the guy with the truck/wrx swap has a welded center diff. right? I can't remeber his name and I can't find the thread, I'll keep looking