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EA82 front brakes on EA81


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19 replies to this topic

#1 mikeshoup

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Posted 22 May 2007 - 11:33 PM

What's the chance of fitting EA82 front brakes on an EA81?

I would think changing the knuckle and then using all the brake stuff from the EA82 would work. Is the strut mount different? If so, then the EA82 strut with EA81 top mounts?

And just how much bigger is the EA82 discs than the EA81 discs? I know they're bigger, but just how much?

#2 Matty B

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Posted 23 May 2007 - 12:33 AM

Yep they fit.
Strut mount (lower) is identical.
Yep they are bigger.
tie rod ends are your only grey area... grab a few different ones from the junk yard and experiment, there is a combo that fits.

Big difference in performance ...Lego for the win.

#3 Phizinza

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Posted 23 May 2007 - 02:50 AM

So vented EA82 front brakes are bigger then vented EA81 front brakes?
I know the solid ones are smaller but never compared vented with vented. Interesting.

#4 mikeshoup

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Posted 23 May 2007 - 07:06 AM

So vented EA82 front brakes are bigger then vented EA81 front brakes?

I know this from deduction. EA82 wagon wheels have sharper curves on the edge of the spokes so they can clear the calipers.

#5 PoorManzImpreza

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Posted 23 May 2007 - 11:27 AM

hmm should work..you'll need ea82 rod ends as ea81 won't fit the ea82 knuckle I have no idea of the length difference, if any, tho'

Kaz

#6 cyberbackpacker

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Posted 23 May 2007 - 05:02 PM

I know this from deduction. EA82 wagon wheels have sharper curves on the edge of the spokes so they can clear the calipers.



So, following this logic, one would not be able to run stock ea81 rims then after this upgrade?

#7 Numbchux

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Posted 23 May 2007 - 05:11 PM

So, following this logic, one would not be able to run stock ea81 rims then after this upgrade?


that's very definitely true.

#8 mikeshoup

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Posted 23 May 2007 - 05:50 PM

So, following this logic, one would not be able to run stock ea81 rims then after this upgrade?

Correct. You have to be running rims that will clear on EA82s. Luckily, that's all I have (my EA81 rims are bent) :grin:

#9 86BRATMAN

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Posted 23 May 2007 - 06:20 PM

I've seen pics(in the Carlisle thread) of an ea82t wagon with the 84 turbo 4-spokes on it. Maybe the alloys were made with more clearance

#10 Numbchux

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Posted 23 May 2007 - 10:27 PM

I've seen pics(in the Carlisle thread) of an ea82t wagon with the 84 turbo 4-spokes on it. Maybe the alloys were made with more clearance


yep. it's just the wagon wheels.

#11 waimaks

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Posted 25 May 2007 - 09:43 PM

yep. it's just the wagon wheels.

So ordinary ea81 and prior steels would probably work too?
Or is this another grey area?

#12 86BRATMAN

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Posted 25 May 2007 - 09:53 PM

The standard silverish steelies would work I believe. The ea82 cars had them and I don't think there was much variation from the earlier design.

#13 waimaks

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Posted 25 May 2007 - 10:28 PM

:headbang:

#14 dfoyl

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Posted 27 May 2007 - 02:02 AM

>>The standard silverish steelies would work I believe. The ea82 cars had them and I don't think there was much variation from the earlier design.

Didn't the offset change b/w EA81 and EA82 ?

Dean.

#15 86BRATMAN

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Posted 27 May 2007 - 02:29 AM

Didn't the offset change b/w EA81 and EA82 ?

Dean.


Now that I do not know...

#16 carfreak85

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Posted 02 June 2007 - 07:04 PM

I don't think it did. Also, wasn't the difference in wagon wheel spoke profile attributed to the EA82 using a different caliper than the EA81 or am I wrong?

#17 ruparts

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Posted 03 June 2007 - 12:30 AM

Hi,
This is a project I have been intending to do for a while , I did measure some parts for it, the knuckle will fit the ball joint and it appears to be the same in height and the arm for the tie rod is the same. But the ea82 strut diameter the part that clamps, is bigger than an ea81 by about 100 thousandths of an inch. So I am going to disagree with matty B that it all fits. They sure look the same but definately are not.If you use the EA-82 strut though and the Ea-81 tops, but springs are the one issue that is in question. I think either will fit but ride height is unsure, and I cant remember the spring rate difference right now. This is further confused by the dimention of the struts from where it clamps and the spring seat on it. I am checkin those next, just looking for time to do it, I have all the stuff. My 84 wagon should stop well with EA-82 discs all round.

Bquote=mikeshoup]What's the chance of fitting EA82 front brakes on an EA81?

I would think changing the knuckle and then using all the brake stuff from the EA82 would work. Is the strut mount different? If so, then the EA82 strut with EA81 top mounts?

And just how much bigger is the EA82 discs than the EA81 discs? I know they're bigger, but just how much?[/quote]

#18 86BRATMAN

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Posted 03 June 2007 - 10:47 AM

I don't think it did. Also, wasn't the difference in wagon wheel spoke profile attributed to the EA82 using a different caliper than the EA81 or am I wrong?


You are correct.

#19 monstaru

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Posted 03 June 2007 - 06:58 PM

they will fit.i've put ea 82 struts with ea81 strut tops onto ea81 knuckles.and never had a problem.i've also used ea82 springs on ea81 struts.and vice versa.put away your calipers and do some fabbin/modifyin cheers, brian

[quote name='ruparts']Hi,
This is a project I have been intending to do for a while , I did measure some parts for it, the knuckle will fit the ball joint and it appears to be the same in height and the arm for the tie rod is the same. But the ea82 strut diameter the part that clamps, is bigger than an ea81 by about 100 thousandths of an inch. So I am going to disagree with matty B that it all fits. They sure look the same but definately are not.If you use the EA-82 strut though and the Ea-81 tops, but springs are the one issue that is in question. I think either will fit but ride height is unsure, and I cant remember the spring rate difference right now. This is further confused by the dimention of the struts from where it clamps and the spring seat on it. I am checkin those next, just looking for time to do it, I have all the stuff. My 84 wagon should stop well with EA-82 discs all round.

Bquote=mikeshoup]What's the chance of fitting EA82 front brakes on an EA81?

as far as the rims go.all it takes is a little grindin on the caliper itself to clear them.if you mount the wheel and turn it a little(if possible).you should see a mark on the caliper .then remove material as needed.it is not a vital part of the caliper.it is simply pot metal anyway.just do it.if you ************ it up get ahold of me and i will give you another damn caliper.cheers, brian

I would think changing the knuckle and then using all the brake stuff from the EA82 would work. Is the strut mount different? If so, then the EA82 strut with EA81 top mounts?

And just how much bigger is the EA82 discs than the EA81 discs? I know they're bigger, but just how much?[/quote][/quote]

#20 mikeshoup

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Posted 04 June 2007 - 05:44 PM

put away your calipers and do some fabbin/modifyin cheers, brian

That's my attitude right there!

Once I get the parts, I'll try this out!

FYI: Parts catalogs show the EA82 rotors are about 1/2 inch larger than the EA81 rotors. Should be good for some more braking powar!




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