thealleyboy Posted August 11, 2008 Share Posted August 11, 2008 Anyone ever done this successfully? The backing plates are obviously different due to the diameter of the spindles, but the larger of the two (2wd) would seem to be a possible subsitute. Of course, this would depend on whether the bolts line up correctly, and the 2wd plate can be properly centered on the 4wd hub. Any feedback on this is most welcome... thanks, John Link to comment Share on other sites More sharing options...
idosubaru Posted August 11, 2008 Share Posted August 11, 2008 what's up alleyboy! do you mean you're wanting to put 2WD rear disks on 4WD rear drum or 4WD rear discs? if the 4WD is already discs it's a straight swap. and you mean EA82 to EA82? Link to comment Share on other sites More sharing options...
idosubaru Posted August 11, 2008 Share Posted August 11, 2008 what's up alleyboy! do you mean you're wanting to put 2WD rear disks on 4WD rear drum or 4WD rear discs? if the 4WD is already discs it's a straight swap. and you mean EA82 to EA82? Link to comment Share on other sites More sharing options...
Turbone Posted August 11, 2008 Share Posted August 11, 2008 Apples and oranges. The 4wd has the bearings in the hub and the rotor has the splines in it. The 2wd has the bearings in the rotor assembly. And looking in the parts book, all the part numbers are different. Meaning, I dont think the backing plate is going to fit on the 4wd hub. I have 3 different numbers for the actual disc, but they look the same in the diagrams. I dont have dimensions in the parts book. Link to comment Share on other sites More sharing options...
edrach Posted August 12, 2008 Share Posted August 12, 2008 If I remember correctly, the only difference is the rear backing plate. Link to comment Share on other sites More sharing options...
Turbone Posted August 12, 2008 Share Posted August 12, 2008 After looking at the FSM again, it looks like all you need to do is remove the disc from the outer hub. Its worth a try. Link to comment Share on other sites More sharing options...
GeneralDisorder Posted August 12, 2008 Share Posted August 12, 2008 The disc and the calipers will work, but the rest will not. The hub, and the backing plate (which is also the caliper bracket) are totally different. GD Link to comment Share on other sites More sharing options...
thealleyboy Posted August 12, 2008 Author Share Posted August 12, 2008 Hey, thanks for all the replies guys!! To clarify, I'm doing a RD conversion on a 4wd wagon with drums. I've done 4wd to 4wd rear disk conversions, but never attempted to use rear disks systems from 2wd vehicles. I knew that the calipers, disks and pads were interchangeble, but wasn't sure about the backing plate. Appreciate the info. Saved me alot of time and frustration John BTW I need a pair of 4wd backing plates if anyone has any Link to comment Share on other sites More sharing options...
idosubaru Posted August 12, 2008 Share Posted August 12, 2008 not sure what yours are like but check your existing backing plates and bolts - you might have a BEAR of a time if they're rusted at all like they get out this way. spray some PB Blaster on them multiple times over the course of a week or more and hope for the best. Definitely use a 6 point socket and if they're really bad you might have some sheared or rounded bolt heads to contend with. Link to comment Share on other sites More sharing options...
thealleyboy Posted August 12, 2008 Author Share Posted August 12, 2008 Gary: Yeah, I've had all of the above {and more} happen at various times. Lets just say I have a good working relationship with a lot of the machine shops around C-Bus:lol: Even with the bolts off, backing plates seem to get hung up around the center hole alot, and it is easy to mangle them up if you pry too hard. I always clean and PB this area before getting started, and remove the plate in a circular motion. John Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted August 13, 2008 Share Posted August 13, 2008 Hi John, I`m not Hijacking the Thread, But... I Need -desperately- a Set of 2WD Rear Discs to put on my White Wagon... the Drums are giving me many Problems... does Anybody have a set to sell to me? Thanx! JesZeK Link to comment Share on other sites More sharing options...
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