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Will EA81/EA82 3spd 2wd auto trannies interchange?
Posted 25 August 2003 - 09:39 PM
Posted 26 August 2003 - 02:46 AM
You might need the converter from one and the flex plate from another but I kind of doubt it.
There may be bigger issues than the bolt up though.
Posted 26 August 2003 - 02:52 AM
Posted 26 August 2003 - 05:33 AM
Posted 26 August 2003 - 05:55 AM
Posted 26 August 2003 - 07:56 AM
Posted 26 August 2003 - 02:06 PM
if the torque converter fits from one to the other, do that.
if not, the ea81 bellhousing will have to be modified to acommodate the ea82 flex plate.
you will have to grind awat the bottom corners, and some of the meat off the bottom that the studs go through, but not enough to waer through. if you have both flexplates, use the spacer off the other one befroe the flexplate, and then the other spacer after that
this is how i got an ea81 engine to fit against the 2wd auto trans of an ea82 car.
hope that answers ya, it worked for me, and i am the only one to do it as far as i know..........................
Posted 26 August 2003 - 09:21 PM
Were the torque converters the same on the tranny swap you did? I wonder if the EA82 converter has a higher stall speed? If so, that would be the one I want to use. It doesn't sound like this swap will be too hard to pull off.
Thanks for the assist.
Posted 27 August 2003 - 12:31 AM
Posted 27 August 2003 - 01:26 AM
Posted 27 August 2003 - 12:57 PM
supposedly 2wd 5spd between ea81 and ea82 are the same. i dont know about the torque converters though. you could test fit, and compare pump shafts. i do know that the 4wd torque converters are different than the 2wd's.
hopefully the torque converters will match up, the only difference they might have is how they fit in one bellhousing or the other.
either way you might go, or modifying is the only way, the mod is relatively somple, and shouldnt compromise structural integrity, if you grind, fit grind, fit, and only grind away what's necessary.
i suggest removing the bellhousing from the back of the motor to mod it.
once you do that and try to fit things, you will see what i mean, its pretty mich a step up from a flywheel mod for ea82 trannies.
the spacer between the crank and the flexplate is to keep the flexplate from rubbing against the back of the motor. everything will bolt up the same, the width of the spacer wont throw it out of fitment spacs
Posted 28 August 2003 - 05:29 AM
Do you know if an EA81 auto trans bell housing will still need to be ground away to fit? Seems to me that they should interchange, but then I haven't seen an EA81 apart yet, so what do I know?! I'm replacing an EA82 auto tranny now, so I at least partly see what you're talking about.
Oh, and one more time, thanks for the info!
Posted 28 August 2003 - 11:30 AM
Posted 30 August 2003 - 07:35 AM
The '83+ EA81 automatics (2wd and 4wd) had a different bellhousing to accomodate the larger "locking" torque converter.
("Locking" because it incorporates centrifugal clutches.)
From what I've seen, the '83+ EA81 auto trannies use (visually) the same torque converter as the EA82 cars.
No grinding should be needed here since your '85 Hatch should already have the correct bellhousing.
Posted 30 August 2003 - 05:31 PM
Posted 30 August 2003 - 11:20 PM
Honestly, I'm not entirely clear on how they work, but there's a big write-up on them in my '83 FSM. If I get a chance, I'll scan it for you.
Posted 01 September 2003 - 02:25 AM
before you put it tohether. use the torque converter from you ea82 trans, since you have to put it on the tranny before you bolt the enginde
you can tighten the flexxplate to torque converter bolts through the timing window.
an off-set 12mm wrench works very well (auto-zone "great neck" 12-14mm offset combo wrench)
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