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quick ea81toea82 swap question
Posted 17 October 2003 - 08:26 PM
Posted 17 October 2003 - 08:35 PM
Posted 18 October 2003 - 04:02 AM
Posted 18 October 2003 - 05:33 AM
Get the 8 7/8 inch clutch disk for the EA81 21 spline. This will go between the EA82 flywheel and pressure plate. Watch out on the throw out bearing size. My bearing on the EA81 tranny could pass through the finger hole on the EA82 flywheel. I had to muck around autozone for a throw out bearing with a bigger surface area and the center size that would fit over the EA81 tranny. Just do a quick sanity check of the throw out bearing and pressure plate.
Posted 18 October 2003 - 10:28 AM
the splines on the ea81 tranny are the same as the splines on the 2wd ea82 tranny right?
i always thought the ea82 2wd tranny splines and clutch is the same as the ea81.
Posted 18 October 2003 - 02:58 PM
Really thinking that's why the guy that swapped the EA-82 engine into the '82 BRAT I now own, used the EA-81 flywheel, and clutch assembly. He re-drilled the mounting bolt holes to fit the larger ones for the EA-82 engine crankshaft.
Main problem with doing that is, you lose the marks for timing the T-belts. Plus, the ignition timing marks are off a bit, I'm setting ignition timing by ear right now.
If you have both flywheels available, you could enlarge the bolt holes in the EA-81s, stack them atop each other, both facing the same way. Align the bolt holes to their proper postion. Then make your own marks on the EA-81 flywheel, for T-belt and ignition.
You could send me that un-needed EA-82 flywheel so that I can do my 5 speed swap. Yes/No, maybe so?!?! Just asking is all.
Posted 18 October 2003 - 03:11 PM
so are there three different tranny splines, or two? im sure i'll find out tomorrow, when i get the ea81 engine out of the car. i am just wondering if i should go pull a two wheel drive engine just for a flywheel i may or may not use.
Posted 18 October 2003 - 04:10 PM
The two splines are 21 and 24 being EA81 and EA82 respectively.
The two clutch sizes are 7 7/8 and 8 7/8 and they are spread all over the place.
My combo is as follows:
ER27 engine (exact same as a EA82 as far as splines and mating etc.
EA81 4 spd tranny which has a 21 spline input shaft
EA82 flywheel and pressure plate which have a 8 7/8 design
EA81 clutch disk with a 21 spline hub
Throw out bearing with EA81 sleeve size and EA82 outer size
Posted 18 October 2003 - 08:23 PM
EA81 clutch disk with a 21 spline hub" quote thingy
so i need a 4wd ea82 flywheel?
and the ea81 has an 8 7/8 clutch disc?
ug... thanks for all your help guys!
Posted 18 October 2003 - 09:01 PM
Posted 19 October 2003 - 03:13 AM
other than the flywheel it basicaly fell into the car with NO MODS. I left the disty out to get the motor around the brake mastercylinder. Pretty much the same setup as tom's brat.
Posted 19 October 2003 - 08:45 AM
Posted 24 October 2003 - 07:44 PM
would a sure fire way to get an 8 7/8 clutch disc be to order a turbo brat clutch?
Posted 25 October 2003 - 12:45 AM
do you still have the '82 tranny in yours? there are 2 different ea81 D/R trannies. the 81-82 had the 7 7/8 clutch, smaller flywheel, and smaller throwout bearing. when my tranny went out on my 82 wagon, I put in an '83 tranny. starting in '83, the throwout bearing has a bigger diameter, and a bigger clutch 8 7/8, and a bigger holder.... the shaft the holder rides on is larger as well, so an '82 bearing holder won't work on the 83+ tranny...
luckily I had a spare '83 flywheel to go with the tranny.
Posted 25 October 2003 - 06:27 AM
Posted 25 October 2003 - 10:13 AM
Posted 26 October 2003 - 05:22 PM
and for some reason the 4x xt i got the motor out of, had a 7 7/8 clutch.
i figure i'll punch the flywheel since my timing belts are right on.
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