How-to; DIY 2 pot brakeupgrade

[MX2GS]

I believe the balljoint offset is the reason they suggest using the larger RX-7(I think some later BG's used the same size) balljoint. I can't exactly take my spindle off and test fit it now(I'd rather not screw with the setup on my only functional car right now, and I'd have to make a pretty long trip to get to my Probe parts car and get the spindle anyway), but as soon as I've can get a small truck or something for a parts hauler/wintermobile, I'll try swapping them and take some pics. If they fit and don't seem to negatively affect anything, I'll try getting the Subaru calipers and test fit those. If that works, I'll look for some 11" Mazda 6 rotors and test that out. If the rear GD spindles/brakes work, I'll just throw a stock set of those one the rear, it'll be a considerable upgrade over my drums anyway.

[FE3-323]

no no no.......... the balljoint off-center has a significant change to castor. no balljoint available can fix that

[MX2GS]

....You just reminded me how horrible a time I had replacing my Escort's balljoints. I shudder to think how tough it'll be with that offset. I'll still do the test fit, but for the finished product I might just wuss out and do the Astina front spindles and all MX-3 GS rear stuff.

[FE3-323]

im working on getting some astina bits...... but it takes time- hard to source them apparently...

[MX2GS]

I've confused myself now, I can use Astina spindles with 28-spline MX-3 axles right?

[FE3-323]

im 80% positive the outer splines are 26. like all BG/EC
memory is fuzzy

[MX2GS]

Er, I meant MX-3 GS axles, the V6 ones that I've read are 28 spline.

[FE3-323]

the outer splines are still 26 with the v6's

[MX2GS]

Really? Weird.. But the point is, shouldn't cause a problem with using the spindles right? On another note, I'm looking at the difference in the BG and GD spindles, and I find myself wondering if it wouldn't just be easier to get a nice thick chunk of steel and machine out a bracket to allow the Subaru caliper to mount up. The link posted to that guy on MX-3.com doing a custom BBK had a nice pic that shows me pretty much exactly what kind of space I'd have to work with. I think for me that'd be the best choice, so I don't have to source Astina spindles in the unlikely event they break.

[FE3-323]

negligence would be the only cause to breaking a astina hub.

[MX2GS]

True, I guess I just fear the cost of shipping on a pair of them.

[bogaut]

yea, i talked to a guy about getting some, he said it would be like over 100 to ship just the rears

[monoxidechild]

I've gathered that the entire front spindle/hub/brake setup from a 2nd gen MX-6/Probe will bolt into the front of a BG car. From here I've gathered that the entire rear spinde/hub/brake setup of a 1st gen MX6/Probe/626 will bolt into the rear of a BG car.

2nd gen probe/mx6 hubs are alot wider where they mount to the strut then on a 323. so there not a direct replacement. but you can do things to fix that like run the probe struts.

[MX2GS]

Yeah I'd heard that you'd need to run probe struts. Since I don't have those(the ones on my parts car are blown), and all this mixing and matching is getting crazy confusing, I'm just gonna save for BA Astina front spindles and do the 2-pot front and use MX-3 rears. I think just having discs over drums in the back will be upgrade enough.

[300BHPZE]

I've confused myself now, I can use Astina spindles with 28-spline MX-3 axles right?

The BA hub is 5 bolt so unless you're swapping to 5 bolt you're going to use a BG/EC hub. It's a direct swap. The only issue I had was with the ball joints. On MX-3's the size of the stud that is pinched in the bottom of the spindle changed in mid 93' from 15mm to 18mm (i think) so that all platforms would use the same ball joint. So when I went to install everything my early 93' MX-3 ball joints were too small for the 98' BA spindles. I don't think that will be an issue for you as the BG always had the 18mm stud if I'm not mistaken.