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Discussion Starter #1
I've been digging through all the posts on the board on big brakes and didn't see this combo for the MKI:

Front Caliper: ST185 Front Caliper
Front Rotor: Coleman 11 x .81 / 4 lug (as listed on Tommy G's site)
or
Front Rotor: Corrado G60 Front Rotor 11.0 x .9 / 4 lug

For Reference the stock front rotor for the ST185 is 10.94 x 1, so both the Coleman and G60 rotor is close.

This looks like it might be a *bolt on* solution with no drilling or welding required.

Thoughts?
 

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the st185 caliper bolting straight on and using a G60 front rotor is well documented on this forum,cant seem to find the thread straight away but its here.Only the JDM st185 calipers will allow the G60,the other st185's have a smaller carrier bracket and will only work with the stock 256mm late spec rotor.

But yes you are right,all celica/gt4 calipers just bolt on.... if you get bored have a read here www.mr2mk1club.com/Bigbrakes.html
 

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Discussion Starter #3
Paul, I have seen your posts on the topic, but I have never seen the combo I refer to in the first thread.

Known MKI Big Front Brake Setups:

Tommy G
Wilwood Calipers / Coleman Rotors
http://www3.sympatico.ca/mr2sc/mods.html

Paul Woods / Deno (Deno is this what you have?)
ST205 Calipers / Drilled and Modded ST205 Rotors
www.mr2mk1club.com/Bigbrakes.html

Kyle Martin:
Wilwood KVR Kit
http://mr2oc.com/showthread.php?t=27678

Vick Brothers:
Custom Kit w/ Wilwood
http://shell.deru.com/~sgn1/AW11/mod/jv3.htm

Amund:
ST185 Calipers / Driled ST185 Rotors
http://mr2oc.com/showthread.php?t=11884

John Welch
AP System
http://www.wcengineering.com/mr2/brakes.html


Thus out of all these kits that I know of, no one has done the ST185 front calipers with the Coleman or G60 rotor. If you are not on this list, please post your specs!
 

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Driving MR2s since '89
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fussychicken said:
If you are not on this list, please post your specs!
93T front knuckle arm/hub/rotor/caliper/lower control arm*

*Not a bolt on, by any means. Requires:
1) Lengthening steering tie rod about 4" (See Bill's Toystar project)
2) Relocating attachment of steering tie rod to top of steering knuckle, along with spacer (I'm still working on best spacer size to minimize bump steer).
3) Machining of knuckle arm to fit MK1 strut assy, or use of MK2 strut assy.
4) Coil over conversion and camber plate/upper pillow ball mounts.
 

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Front is easy. Rears are difficult- The best so far are paul/Deno's 93+T caliper conversion.

I'd like to see something with a 4 pot rear caliper, like a wilwood, and some other type of parking brake setup. Some cars have an integral drum brake that fits inside of the rotor hat.

Any ideas on what other cars we could adapt a setup like this to?

Brent
 

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ah im with you now fussy.....the G60 rotor wont work on the front with st185 calipers because the offset is wrong...the easiest way to use a JDM late spec st185 caliper is to bolt on the 277mm rotor from the same car.

It has the 54mm centre bore so all you need to do is drill out 3 holes for the 4/100 pcd,one of the 5 stud holes lines up already.This drilling doesnt need to be accurate cos the rotor is hubcentric on the 54mm centre hole.I think this is what Amund did.
 

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fussychicken said:
Known MKI Big Front Brake Setups:

Tommy G
Wilwood Calipers / Coleman Rotors
http://www3.sympatico.ca/mr2sc/mods.html

Paul Woods / Deno (Deno is this what you have?)
ST205 Calipers / Drilled and Modded ST205 Rotors
www.mr2mk1club.com/Bigbrakes.html

Kyle Martin:
Wilwood KVR Kit
http://mr2oc.com/showthread.php?t=27678

Vick Brothers:
Custom Kit w/ Wilwood
http://shell.deru.com/~sgn1/AW11/mod/jv3.htm

Amund:
ST185 Calipers / Driled ST185 Rotors
http://mr2oc.com/showthread.php?t=11884

John Welch
AP System
http://www.wcengineering.com/mr2/brakes.html


Thus out of all these kits that I know of, no one has done the ST185 front calipers with the Coleman or G60 rotor. If you are not on this list, please post your specs!
Paul and I have the same rear brake setup with a little different fab work.

The fronts on mine I did not change because they seemed to work OK to start with. The rears were the problem as far as over heating goes. I have now warpped the fronts again and I've had enough. I'm working on my front kit as we speak but I'm going with Wilwoods 4 pot and the G60 disk. I'll let you know how it goes. I will be getting some brackets machined in a day or two.
 

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I think I'm going to go the ST185 single pot + ST185 277mm disc route. I'm not going to tune the 3SGTE for massive power, and it should stop well enough for normal driving (its not going to be a trackday car).

Sounds simple enough to do - only the 3 additional holes to drill in the disc and thats it; as far as I can tell from al of these posts, the caliper bolts straight up.

BTW folks, anyone in the UK wanting to do this can get brand new late/UK ST185 single pots from Brakes International for ?47+vat, discs are ?25. Much cheaper than Mr Toyota - and possibly preferable to used stuff which can be an unknown quanitity. They also do the twin pot ST165/early ST185 caliper for those who want new ones.
 

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Deno said:
I have now warpped the fronts again and I've had enough. I'm working on my front kit as we speak but I'm going with Wilwoods 4 pot and the G60 disk. I'll let you know how it goes. I will be getting some brackets machined in a day or two.
I'm thinking along these exact same lines, Deno. Eric could set this up for me, no problem. That's probably what I'll do.
 
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