So after finally getting this thing to the point where I'm comfortable to dump more $$ into it, it's time to address the suspension and brakes on this car because they are
just that bad and border on dangerous.
This car is officially going to be 5 lug'd thanks to tips from Derek, but I'm slightly altering how the bearings are put into the uprights as I'm not 100% confident on the long term affects of spacing the hub out of the bearing as far as he did.
Parts required/used
for 5 lug swap on a 1985 4000 are:
4 - 5000 tq hubs (thank you Austin!)
2 - Rear axles from '86 and up 4000 (thank you a aorsinger)
4 - 4000 rear wheel bearings (Thanks Joe@axismotorsport)
and AL spacers, which I'll elaborate on their use later in the post.
Now onto the supension story...
The only way to make this car handle like I think it should means I can't just pick a standard H&R solution off the shelf... nope, it was coil-overs or nada. I did a lot of thinking as to how I wanted to tackle this. I could go the cheap route and do the Ground Control route and get it done rather inexpensively and then R&R the remaining of the strut mounts w/ new ones w/ some of Mance's Mount Saver 2s. Then I could go the next step and do Mance's CCK setup w/ his Pro-Mounts all 4 corners. Final and off the wall was to do 034's KW setups, but I just couldn't justify that much $$ when I'd have to spend more adjusting tie rod arms, and still tackle the strut mounts, etc.
So my decision... was to go with Mance's CCK, Big Bore Strut Extenders (for the front to allow me to run bigger shocks than stock), and pro-mounts. I've used a fair amount of Mance's stuff in the past w/ my 12v, and I've never been let down... and as par for the course, his work is absolutely beautiful!

To make the downtime on the car as minimal as possible, I've purchased a completely different set of uprights for the car (thanks Keith [karthurq])... but out of a B3 90q. This allows me (with the help of Mance's BBSEs) to upgrade to bigger UrS4 Bilstein Sport shocks in the front as well as have the 2 pc uprights, which are better and more adjustable.
This post will only address the rears as I'm waiting for the hub carriers for the B3 uprights.
So I started off w/ a very very rusty set of rear uprights. I now realize what you guys w/ northern cars have to deal with. These came off a car that was a NY car iirc, and holy lord man!
As par for the course w/ any coil over project, I first started by grinding off the OEM spring seats. 30 min w/ my angle grinder and they were off and in the trash.
From that point, I started pressing out the old bearings because I needed to take measurements to figure out where to space the bearing so I could fit the
upgraded rear brakes (more on that later)


can you say ruuuuuuusstty

Removing the circle clips from this obscenely rusted beast was not quite a treat. The first one came off pretty easily w/ a lil pb blaster, lil heat, and some physical persuation. Unfortunately for me, the other circle clip fought me tooth and nail... literally crumbling as I tried to remove it.
After a LOT of heat, a LOT of pb blaster, and evenyually me resorting using a dremel tool to cut it to hell and welding various washers and beads on the damn thing to break it free we come with this (easy one on the left, PITA on the right):

and the upright in all its nasty/rusty/primered glory:

after some quality time with my drill and wire wheel (sandblast cabinet at work was dead unfortunately... and i burned up my corded drill wire wheeling these things :frustrated:) they were ready for some paint:

and the finished product:

unfortunately, I got a bit ahead of myself as I forgot I had to weld on the rings for the coilover conversion stuff... soooo, with a little lovin' with the wire wheel (and a new drill):

And I got the rings fitted:

and welded on:

not the prettiest of welds, but pretty good considering it's a $85 harbor freight flux-mig welder

After a bit of brushing w/ the drill and wire brush again they looked pretty good if I do say so myself 8)
Mance has these rings REALLY tight toleranced (going along w/ his 'gonna be a dog, why be a chihuahua" theme :-P) so I had to clean up a little bit where I had originally cut off the rear perches to get them and the sleeves to slide over the upright. These fit like a glove and were great to work with. I have no concerns w/ them failing, that's for sure!
And here are the uprights all painted up and ready for final assembly and installation :-D

With the uprights ready to go, next in line was to get the brake situation settled.
For the Fronts:I am going to fit a set of Boxster Calipers w/ A8 rotors on the B3 uprights. These uprights allow me to bolt on brake setups from an A4 (Thanks Derek for figuring that out!), so I will use the boxster caliper brackest from an A4 to do the job (thank you Joe@axismotorsport!!!). The offset from the hub to the caliper aren't quite right and need some adjusting, but otherwise the brackets bolt straight to the upright. I will cover more on the front brakes once I get the hub carriers.
For the Rears For the rears, I figured bigger is better, and the stock rears on the 4000 were just not going to cut it in my book. After parting out the 200 donor car, I found that it had a set of 200 20vt rears that were freshly installed and had next to no mileage on the pads or rotors... so I figured I'd make 'em fit

From what I saw on Dereks 20vt buildup, if I would have stuck w/ the stock rear brakes on the 4000 I wouldn't have had to go through this, but since I'm using these brakes alterations need to be made.
All the parts ready to get sized up:

after a good deal of measuring of the hubs, rotors and uprights w/ my digi calipers, I used autocad to help me dial in on how much spacing I needed to do to get everything to line up right. I decided to push out the bearing from the carrier approx 3/16" and the hub from the bearing ~1/8". Since spacers for this kind of deal aren't exactly common (at least, that I found), I decided to make my own:

With some time w/ the drill and hole saws I came up with this ring:

naturally these aren't quite the right size, and I used 2 of them to get the required spacing, so I merely made them into "C" rings and stretched them so they would seat perfectly on the outter ring of the wheel bearing:

Then came time to press in the bearing:

and this is how it sat...

basically sits flush with the outter ring on the upright. It seats firmly and should hold nice and tight in there.
Then came putting in the hub:

At the time of this picture I decided to space the rotor off the hub. After doing this I decided it'd be better to space the hub from the bearing so I don't loose the hubcentric ability of the rotor on the hub. I had work arounds so I could still keep the rotor centered, but in all honesty, spacing the hub not the rotor is the "right" way to do it in this case.
here's the almost finished product:

And now w/ all spacers in place... the rotor and carrier to the 200 20vt rears


and ready to go:

Really can't wait to get these fully ready to go on and rockin'. The rear rotors will now be as big as the old front rotors on the 4000 :-P
I have no doubt that I will probably have to install an adjustable proportioning valve because these rears are probably going to bite TOO much... but we'll see once I get everything all installed

So that's the update for now... hope ya enjoyed the story! I am waiting on an order from Joe to come in w/ more wheel bearings so I can finish assembling the other rear upright and then hopefully I will be able to get me the front hub assemblies soon so I can start cranking those out.
until next time
