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
- - - - -

Purpose of backing plates on rear discs


  • Please log in to reply
6 replies to this topic

#1 ystrdyisgone

ystrdyisgone

    USMB Regular

  • Members
  • 361 posts
  • MT

Posted 10 May 2014 - 10:55 PM

So I've been trying to track down a rear disc setup (who hasn't been..) to no avail. I see we can get the calipers and rotors on RA, all that leaves is hubs and backing plates right?

 

Now the question, are the backing plates there primarily as a dust/rock shield? If so, could I modify the existing backing plates to accommodate the new setup? Or is there some function they serve that I'm not thinking of here?



#2 81EA81

81EA81

    Eat, Live, Breath Subaru

  • Members
  • 382 posts
  • Spokane,WA

Posted 10 May 2014 - 11:09 PM

The caliper mounting bracket bolts to the backing plate surprisingly enough. I couldnt tell you about moding the existing backing plate.  Anything is possible if you try.



#3 Crazyeights

Crazyeights

    SubaRube Goldberg

  • Gold Subscribers
  • 904 posts
  • PNW

Posted 10 May 2014 - 11:59 PM

I used Legacy backing plates and rear calipers on my Loyale project ("Royal Loyale")  I picked it the idea from Nico and Suberdave. You also end up with the option for a rear e-brake. You just have to weld up and re-drill the Leg backing plates and it's pretty much plug and play. The pieces in the first picture were cut from old EA rear drum backing plates.

 

Attached File  Loyal rear disc - center.jpg   116.1K   39 downloads Attached File  Loyal rear disc - welded.jpg   110.23K   53 downloads Attached File  Loyal rear disc.jpg   121.19K   55 downloads Attached File  Loyal rear disc - cal.jpg   115.5K   44 downloads

 

I am not sure how much this helps you though. I still had to find a set of XT6 rear hubs to make this work and I never did find the correct XT6 rear backing plates, hence the need for the mods... Sooo much difference in braking now. It was well worth the effort.


Edited by Crazyeights, 11 May 2014 - 09:16 AM.


#4 ystrdyisgone

ystrdyisgone

    USMB Regular

  • Members
  • 361 posts
  • MT

Posted 11 May 2014 - 12:28 AM

Thanks for the info guys.

Crazyeights, that definitely sheds some light on what I'm going to have to do here. Do you know if anyone has tried the same setup but with ea82 rotors and hubs?

#5 Crazyeights

Crazyeights

    SubaRube Goldberg

  • Gold Subscribers
  • 904 posts
  • PNW

Posted 11 May 2014 - 12:51 AM

The EA82 rear rotors would be too small in diameter I think. Hmm...  Thinking. You should be able to make rear caliper mounts from some flat steel stock. I have a complete EA82 rear disc set up off the car right now (not for sale, sorry). I can send along pictures and measurements of that too if it helps. You might just have to fab up something.  We can help!

 

Here are some EA82 Turbo Wagon rear disc backing plates that I pulled at the local P-N-P and cleaned up for a project a couple years back. You only really need the thick center portion to mount the caliper. The rest just keeps the rotor cool and sheds debris or water. As you can see from the pictures above, any cut up old drum backing plate works as a drill-hole template for making what you need.

 


Attached File  EA82 Rear plate - 1.jpg   77.31K   22 downloads Attached File  EA82 Rear plate - 2.jpg   78.92K   20 downloads


Edited by Crazyeights, 13 May 2014 - 08:49 AM.


#6 czny

czny

    USMB is life!

  • Silver Subscribers
  • 337 posts
  • Azusa, California

Posted 12 May 2014 - 10:28 PM

Shoot me a PM about disc backing plates.;)



#7 wagonist

wagonist

    User Awaiting Email Confirmation

  • Members
  • 414 posts
  • Sydney, Australia

Posted 13 May 2014 - 01:39 AM

You can use the stuff of a FWD model, but the centre hole on the backing plate needs to be enlarged.

These are a lot easier to find.

The differences in the FWD & 4WD stuff is the hub & the backing plate centre hole, everything else is identical.

 

Problem is, the 4wd hubs are the hardest thing to find.... :(






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users