Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

EA82 engine crossmember into EA81 car.


  • Please log in to reply
24 replies to this topic

#1 s'ko

s'ko

    RIP

  • Members
  • 1,722 posts
  • Los Angeles

Posted 06 June 2006 - 10:43 AM

Ok here is something to kick around.

If you are lifting an EA81 car, can you make the lift blocks to retrofit an EA82 engine crossmember in place.

This would allow for EA82 powersteering, and make it easier to do the 5 lug swap. I am assuming that I would then need EA82 axles.

Any thoughts?

BW

#2 970subaru

970subaru

    Subaru Fanatic!

  • Members
  • 461 posts
  • Seattle, WA

Posted 06 June 2006 - 08:42 PM

very doable I bet.

#3 LPGsuperchargedBrumby

LPGsuperchargedBrumby

    Fully retarded and low on compression

  • Members
  • 655 posts
  • Dunedin, NZ

Posted 06 June 2006 - 11:54 PM

from what iv'e heard the ea81 and ea82 crossmembers are different widths so if you offset the holes in the lift right i can't see why it wouldn't work

#4 s'ko

s'ko

    RIP

  • Members
  • 1,722 posts
  • Los Angeles

Posted 07 June 2006 - 01:16 AM

right...

Well I have an EA81 crossmember and an EA82 crossmember sitting in my garage. Time to get a measuring.

Will have some answers by this weekend.

BW

#5 Sweet82

Sweet82

    Elite Master of the Subaru

  • Members
  • 3,266 posts
  • Salt Lake City

Posted 07 June 2006 - 01:32 PM

Making the crossmember fit should be easy but what about the EA81 frame rails (narrow) and the EA82 valve covers/motor (wide).

The question is EA82 engine width vs EA81 engine bay at the frame rails lifted height...?

Go Sko, GO!
Glenn,
82 SubaruHummer
84 GL Mad Max
01 Forester

#6 s'ko

s'ko

    RIP

  • Members
  • 1,722 posts
  • Los Angeles

Posted 07 June 2006 - 03:45 PM

Making the crossmember fit should be easy but what about the EA81 frame rails (narrow) and the EA82 valve covers/motor (wide).

The question is EA82 engine width vs EA81 engine bay at the frame rails lifted height...?

Go Sko, GO!
Glenn,
82 SubaruHummer
84 GL Mad Max
01 Forester


Here is the set up. EA81 engine, 4 inch lift, EA82 crossmember, I have a crossmember from a 87 GL-10 w/PS. I also remember reading that doing a 5 lug swap a roo w/stock EA81 ball joint arms was more difficult than w/ EA82 parts. I theorize that if the EA82 crossmember is used, then you can use the EA82 recipe for a 5 lug swap.

I still have to clear out my garage and then order those toasty casted 4 inch strut blocks from SJR....:slobber:

So final product is going to be BRAT w/4 inch lift. EA82 Power steering, 5 lug swap and a twin stick set up.

Hope to start w/everything by next weekend.

BW

#7 TomRhere

TomRhere

    Certified BRAT nut!!!

  • Members
  • 3,956 posts
  • Hillsdale, Mi. USA

Posted 07 June 2006 - 07:44 PM

Been thinking along this same line myself, and started doing the measuring of things. It's been 2 years almost since I started this little project, and I'm not sure of where all my notes are right now.

Things I do remember are;

The front/rear spacing of the crossmember holes are the same.

Yes, the EA-82 x-member is wider, so is the engine, but engine will fit between E-81 frame rails.

The side - side measurments of the EA-82 x-member holes is not concentric front - rear vs the EA-81 x-member. To clairify, lets say the front set of holes are 1-1/2" wider than the ones on the EA-81. The rear set of holes are like 1-3/4" wider. It may be the fronts are wider, just throwing the difference out there for info.

Using the EA-82 knuckle is the best and easiest way to do it. The EA-81 strut will fit it with no problem. You can use the EA-82 strut, but you need to do some modding of the EA-81 strut top to fit it on the EA-82 strut. Miles Fox has made mention of this a couple times, but I can't really recall what he said.

Using the EA-82 knuckle keeps the tie-rod ends and ball joints of the EA-82, otherwise you have to modify things to use the EA-81 knuckle, mainly the tie-rods here. There's a difference in the taper where they fit into the knuckle, and a difference in how the tie-rod threads onto the inner tie-rod on the steering rack. Best just to keep as much EA-82 stuff as possible.

You have to cut and re-weld the renforcment area of where the lower control arm attaches, (pivot bolt) to the x-member in order to use the EA-81 arm on the EA-82 x-member. This is due to the control arms being straight vs bent.

#8 Gravityman

Gravityman

    GO BIG OR GO HOME!!!

  • Members
  • 647 posts
  • Goldsboro

Posted 09 June 2006 - 03:13 PM

I am working on droping an ER27 crossmember into my EA81.

Does anyone know the how different the Crossmembers are between the ER27 and the EA82?

I know the ER27's is one inch wider on either side, a total of 2 inches total.

Can some one take a picture of an EA82 Crossmember for me please???

#9 TomRhere

TomRhere

    Certified BRAT nut!!!

  • Members
  • 3,956 posts
  • Hillsdale, Mi. USA

Posted 09 June 2006 - 05:25 PM

Gravityman,, I have all 3 x-members out in the garage. I'll get some pics taken of them and get them up on my photobucket page.

Can tell you that the front/rear spacing in the XT6 x-member is much different from the EA-81/82 holes. It's also shaped somewhat different than the EA-82 is.

#10 Gravityman

Gravityman

    GO BIG OR GO HOME!!!

  • Members
  • 647 posts
  • Goldsboro

Posted 09 June 2006 - 07:07 PM

Correct. I think what i am going to do is take a 1/4'' thick piece of steel and drill 4 holes in it, 2 for the frame bolts from the EA81 CM and 2 for the CM from the ER27. I would imagine that it would/should work.

Cant wait to see the pics! Thanks a bunch

#11 TomRhere

TomRhere

    Certified BRAT nut!!!

  • Members
  • 3,956 posts
  • Hillsdale, Mi. USA

Posted 10 June 2006 - 04:29 PM

http://s29.photobuck...here/X-members/

Above link is to pics of all 3 X-members. The EA-81 is the complete system, then the EA-82, and ER-27.

Measurements are as follows;
Hole spacing, front to rear; EA-81 = 5-9/16", EA-82 = 5-9/16", ER-27 = 6-3/8".
Hole spacing, side - side;
EA-81 Front = 31-1/4", Rear = 29-11/16"
EA-82 Front = 32-7/8", Rear = 31-15/16"
ER-27 Front = 33-1/16", Rear = 31-7/8"

A couple pics were taken of the x-members on-top of one another, just to show differences better than telling the law of the ruler. All measurements are to the nearest 1/16" and are not to be taken as word to build from.

Let me know if you need more/better pics.....

#12 ShawnW

ShawnW

    Subaru Master Technician

  • Administrator
  • 12,921 posts
  • Denver, Colorado

Posted 10 June 2006 - 07:19 PM

Nicely done with the pictures, thank you.

#13 TomRhere

TomRhere

    Certified BRAT nut!!!

  • Members
  • 3,956 posts
  • Hillsdale, Mi. USA

Posted 11 June 2006 - 04:17 PM

Nicely done with the pictures, thank you.


Thanks Shawn.

Was trying to get a good show of things related to this thread. Using the OSB was the best contrast I could think of at the time. Also don't like hogging space on the Board, so I got the photobucket site to do things like pics on.

#14 s'ko

s'ko

    RIP

  • Members
  • 1,722 posts
  • Los Angeles

Posted 12 October 2006 - 12:16 AM

I made some rough measurements and here is what I came up with

I measures from outer diameter of the holes to the other outer diameter.


EA81 front =31 3/4
back =30
EA82 front =33 1/2
back =32 5/8

So we are looking at a difference of 1 3/4 for the front and 2 5/8 for the back
The offset in the lift block in the front would have to be 7/8 on each side and 1 5/16 for the back blocks. I will take some more accurate measurements before i make the blocks.

BW:headbang:

#15 baccaruda

baccaruda

    YOUR FAVORITE MOD

  • Moderator
  • 6,941 posts
  • SpoVegas, WA

Posted 12 October 2006 - 12:50 AM

You are talking about switching out the strut top. It needs to match the car that is being worked on, so to put the EA81 strut top on the EA82 struts you'd want a spring compressor. (nice time to get new struts or RX springs :brow:)
That is literally the only EA81 part you'll have in the front suspension if you have a complete EA82 front end available to you. I'd imagine you could run the EA82 front sway bar as well, without any clearance problems.

This has the added benefit of allowing you to swap in an XT4's steering rack which has a tighter turning ratio!


You can use the EA-82 strut, but you need to do some modding of the EA-81 strut top to fit it on the EA-82 strut. Miles Fox has made mention of this a couple times, but I can't really recall what he said.



#16 Numbchux

Numbchux

    EJ conversion addict

  • Members
  • 5,985 posts
  • Duluth, MN

Posted 12 October 2006 - 02:13 AM

I made some rough measurements and here is what I came up with

I measures from outer diameter of the holes to the other outer diameter.


EA81 front =31 3/4
back =30
EA82 front =33 1/2
back =32 5/8

So we are looking at a difference of 1 3/4 for the front and 2 5/8 for the back
The offset in the lift block in the front would have to be 7/8 on each side and 1 5/16 for the back blocks. I will take some more accurate measurements before i make the blocks.

BW:headbang:


be careful with this, if the blocks are offset, than the forces are not transferred directly into the framerails. it's not like they're holding up the car, but I'd still over-engineer the blocks.


XT4 steering rack is quicker than EA82?? hmmmm.....

#17 s'ko

s'ko

    RIP

  • Members
  • 1,722 posts
  • Los Angeles

Posted 12 October 2006 - 10:24 AM

be careful with this, if the blocks are offset, than the forces are not transferred directly into the framerails. it's not like they're holding up the car, but I'd still over-engineer the blocks.


XT4 steering rack is quicker than EA82?? hmmmm.....


Yeah I thought of that. I am probably going to connect the lift blocks in the front end that they will support each other. might solve the problem of having a lift bolt come loose.


Barracuda. Actually I am going a couple of steps up the subaru evolutionary ladder and going to put in the front struts from my OBS. Just scored a set of forester XT struts :banana: So I am going to put those on my OBS. The OBS struts have about 100k on them but I figure with the BRAT being a lot lighter it should last for another 50 or so. Will have to reinforce the strut towers while I am doing that.

Lets hope it all works out.

BW

#18 s'ko

s'ko

    RIP

  • Members
  • 1,722 posts
  • Los Angeles

Posted 14 October 2006 - 05:44 PM

I cleaned up the crossmember and took the steering rack out. I think I am going to weld a piece to the side of the crossmember mount and make it smaller like the EA81 crossmember. Will take pics

#19 Scott in Bellingham

Scott in Bellingham

    Lets go wheelin!!

  • Members
  • 3,584 posts
  • Bellingham

Posted 17 October 2006 - 02:02 PM


order those toasty casted 4 inch strut blocks from SJR....:slobber:

BRAT w/4 inch lift. EA82


on those blocks I could produce a hybred block with a ea81 Top with the EA82 bottom, that way the stock EA82 strut and strut tops could be used , be 5" or 3-1/2" tall with the tooling I presently have , or tool up for a 4" SJR

#20 s'ko

s'ko

    RIP

  • Members
  • 1,722 posts
  • Los Angeles

Posted 18 October 2006 - 11:27 AM

on those blocks I could produce a hybred block with a ea81 Top with the EA82 bottom, that way the stock EA82 strut and strut tops could be used , be 5" or 3-1/2" tall with the tooling I presently have , or tool up for a 4" SJR


I will keep that in mind. I was going to ask you about that but then I got the forester XT struts. I will be doing the install on them soon and I will be comparing the stock OBS strut to a EA81 strut. I want to see what the height difference is before I make plans for my strut lift blocks.

BW

#21 NoahDL88

NoahDL88

    Elite Master of Cookies

  • Members
  • 4,264 posts
  • Everett, WA, USA

Posted 20 October 2006 - 05:54 PM

Does anybody know the width of the Legacy cross memeber? Shh, but i'm thinking about putting it into an EA-81.

#22 s'ko

s'ko

    RIP

  • Members
  • 1,722 posts
  • Los Angeles

Posted 23 October 2006 - 02:25 PM

don't know the exact measurements but I do have a crossmember from an EJ18 sitting on my work bench. Will take measurements and post tonight

BW

#23 NoahDL88

NoahDL88

    Elite Master of Cookies

  • Members
  • 4,264 posts
  • Everett, WA, USA

Posted 23 October 2006 - 04:32 PM

Thanks :banana:

#24 NoahDL88

NoahDL88

    Elite Master of Cookies

  • Members
  • 4,264 posts
  • Everett, WA, USA

Posted 26 October 2006 - 03:53 PM

Any news?

#25 s'ko

s'ko

    RIP

  • Members
  • 1,722 posts
  • Los Angeles

Posted 19 November 2006 - 03:10 PM

Any news?


Sorry for the delay.

Ok here are some rough measurements.

The distance from front hole to the rear hole is about 6inches.
The front holes are 33 13/16 apart and the rear holes are 32 inches apart.

Hope that helps.

BW




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users