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Discussion Starter · #1 ·
Hello all,

I've searched through the archives and noticed a few messages related to adapting alternate hubs to MKII Supras, but has anybody attempted to adapt an entire spindle assembly, or get custom spindles made?

I'm more interested in being able to upgrade my brakes and being able to get inexpensive wheels than I am having the car look particularly great (I know the general consensus is that dished wheels look better, and I'm a part of that majority) since I just can't seem to bring myself to spend $1200+ for a set of custom rims, plus the fairly high cost of upgraded brakes for the beastie. Whew! How's that for a runon sentence? :)

The car is destined to primarily be a track toy, so I'm looking at adaping spindles (and rear hubs, most likely) from something such as a later Supra (I know the MKIIIs have double a-arm suspension, but didn't the MKIVs go back to struts?), RX7, Mustang, or some such similar car. It shouldn't be too complicated with a little custom fabrication and some creative searching for items such as ball joints, tie rod ends, and struts (I managed to cobble together a disk brake front setup for a '68 Mustang using cobbled together bits, so I know it can be done sometimes).

If nobody has done this, does anybody have the specifications for the stock ball joints, lower control arms, and struts for the front end? I don't have my car in my garage yet, or I'd check it myself...

Thanks all,

Bob Moon
Tracy, CA
'03 GTI 20th Anniversary
'98 Tacoma 4x4 TRD
'84 Supra, currently with an '85 engine, soon to be a 7MGTE (well, next year sometime - down a ways on my Suproject list)
 

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Discussion Starter · #3 ·
SupraFiend said:
http://www4.tpgi.com.au/users/loats/technical/ma61/fronthub.html

Don't belive he ever had any luck on the rears though, so its kinda pointless just doing the fronts. Wheel adapters and the Jim King bbk are your only options, neither are that expensive compartively to options on other cars.

Thanks for the link, but to clarify, I'm looking for ideas on custom options involving spindles. I've checked out that page, and it's primarily just swapping hubs. I want to improve the brake availability, wheel selection, and general suspension design with different spindles. I know this can be done any number of ways, but I'm wondering if anybody has researched which spindles (knuckles) have the same balljoint taper and, ideally, the same general configuration as the MKII allowing larger offset wheels and bigger brakes.

My thought at this point is that I'm going to have to fabricate a custom lower control arm (not that tough, actually), and use some oddball tie rods along with the struts that are for whatever I'm taking the spindles from. Yes, I'll probably need to custom-mount the struts to the towers, but that's also not that difficult to do.

If I could get the kind of braking power my DSM had without the FWD spindles (heavy), I'd be super happy! Of course, I could probably fabricate some custom spindles, but those aren't as easy as custom control arms...

Thanks again,
 

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I've been doing the research on this and trying to find a solution.

One stumbling block in the end may be the wheels themselves once the new hubs are installed. Almost all more modern cars, which would have a greater selection and less costely aftermarket rims available, have a really large positive offset. They may not fit properly on the MK2.

Still doing the research though.
 

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One thing you might want to look into is that 68-78 Camaros take the same wheel bearings as the MkII,... A2 and A6s. That means a little custom lathe work on the hub/rotor (it's one piece) to get the spacing between inners and outers right, and then a caliper mounting bracket adapter. That way you can retain the OE Supra spindles.
That will get you 5 lugs, much more versatlity in terms of wheel selection, and quite a bit more brake upgrade availabilty. You can go here for that:

http://www.precisionbrakescompany.com/index.htm

The rear axle stubs CAN be re-drilled.


Good luck and let us know what you find out!
Jamie
 

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ghostrider

Thanks for the info

One thing you might want to look into is that 68-78 Camaros take the same wheel bearings as the MkII,... A2 and A6s.
This is exactly the kind of info I'm looking for.
 

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Yamahamoon, I think the only reason your DSM could outbrake your supra is due to tires and not anything that the brakes were doing. I've tracked my car three times now and haven't had any braking problems at all. The only uprgrade I've done is replace the fluid with Super Blue. My friend who has driven vipers and 911turbos says my brakes are some of the best he's felt. The tires are my limitation right now and until I replace my Pilots with something else I have no idea what kind of brakes I'll need. Just saying that you should make sure the brakes are actually your problem.
You're also talking about wanting better wheel selection, if you want FWD wheels get a set of bolt on spacers and they'll be as strong as stock and you can use any honda wheel you want that's made for a four bolt hub. If you're really worried about bigger brakes and really want to make something custom just make something like the Jim King BBK, ie. caliper mounting brackets and rotor adapters. Just my thoughts, but you know what they always say.

If it ain't broke, don't fix it.
 

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Something doesn't add up. There is no way a stock Mk2 brakes as well as a 911 turbo, unless this is like a mid 70s model or something. I've ridden in some of the newer ones and they stop a hell of a lot better than my Mk2 even with the big Wilwoods (which are a huge improvement over stock).
 

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A 911 what ever model NA, turbo will out brake most any car because of one important design element.

Most of the weight of any 911 is behind the rear axle. When the car brakes the weight shifts forward and is evenly loaded on all four wheels. Other cars the front does most of the braking because most of the weight is in front of the rear axle. When these cars brake the weight shifts forward also, but most of it onto the front wheels.

Simple physics.
 

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Discussion Starter · #10 ·
RWDCelicadude said:
Yamahamoon, I think the only reason your DSM could outbrake your supra is due to tires and not anything that the brakes were doing. I've tracked my car three times now and haven't had any braking problems at all. The only uprgrade I've done is replace the fluid with Super Blue. My friend who has driven vipers and 911turbos says my brakes are some of the best he's felt. The tires are my limitation right now and until I replace my Pilots with something else I have no idea what kind of brakes I'll need. Just saying that you should make sure the brakes are actually your problem.
You're also talking about wanting better wheel selection, if you want FWD wheels get a set of bolt on spacers and they'll be as strong as stock and you can use any honda wheel you want that's made for a four bolt hub. If you're really worried about bigger brakes and really want to make something custom just make something like the Jim King BBK, ie. caliper mounting brackets and rotor adapters. Just my thoughts, but you know what they always say.

If it ain't broke, don't fix it.
I'm sorry, but I sincerely doubt the Supras brakes are anything close to a current Viper or 911. Considering that the general consensus is to upgrade the brakes as soon as you start moving the power north on the dyno chart, I'm going to suppose they are typical of cars of the mid-'80s, and need upgrading.

Spacers are heavy, adding more to the unsprung weight. Very, very bad on a track car.

The cost and availability of such caliper kits seems to be about the same as spindles and brakes from another car, and not very common, respectively. Perhaps the Supra will brake as well as my DSM (or GTI, or M) with better brakes and tires, but the commonality of parts is simply not there, unfortunately. I'll definitely investigate some of these alternatives when I get the car in my garage, but needing to custom machine every set of rotors I get for the car is not a very good option in my opinion, when I can use off the shelf parts for a different spindle to the same effect (or better).

I'll research the deal once I get the car home and torn apart (probably early next year - it's at my bro-in-law's, about 300 miles away in LA) and let you all know what I find. I'm not opposed to custom fabricating suspension bits, as I can probably improve the geometry significantly at the same time. Heck, at this point, fabricating a double a-arm suspension is not out of the question, so I'll definitely have to weigh my options.

Essentially, if'n it's gonna be a race car, I may as well make it the best I can while I'm at it...

Thanks for the suggestions, though! Please don't feel that I'm attacking any opinions presented; I just want to think outside the box and make this car the best I can, so I don't get the urge to change it in two years because of its limitations...
 
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