Big Brake Kit???

[Mark_Dorman]

Does anyone know if a big brake kit from an MkI mr2 would fit an Mk2 (91)? Thanks...

[ExtremeMr2]

Why would you want to do this.. there are plenty of big brake kits out there for a MK2...
The best ive seen is the Wolfkatz kit.
Front and rear... larger master cyl., front 4pots, 93+ Turbo rear calipers.

[Oteck]

i didn't know the mk1 had a bbk lol. it's hard to imagine with a 4lug hub

[kbrew8991]

what power level are you at and what do you do with the car? might just need to change a few different parts to get the braking you need without going $$$$ and weight to a bigger brake setup

[Mark_Dorman]

Not looking to spend a lot of money. I found out that hux makes brackets for wilwood 4 pot calipers and the supra tt rotors (I believe they are 12.6 in). I feel like that would make a killer bbk and not break my wallet. Does anyone know if this setup would retain the stock parking brake?

[Oteck]

Changing the front won't affect the handbrakes, most ppl just wouldn't touch it unless they used a rx8 rotor adapter bracket + 93t rear caliper. to me thats not a good setup since the brake pad not using all the usable surface on the rotor

This is my ls400 bbk im making myself... these prototypes are freak'n expensive

[kbrew8991]

Originally Posted by crcrzy12

Not looking to spend a lot of money. I found out that hux makes brackets for wilwood 4 pot calipers and the supra tt rotors (I believe they are 12.6 in). I feel like that would make a killer bbk and not break my wallet. Does anyone know if this setup would retain the stock parking brake?

are you trying to fill out some wheels or just get some more stopping power?

you can probably get the latter with just going to a properly agressive pad, and maybe some cooling ducting if you are still getting a touch of fade unless we're talking insane power levels coupled with heavy use....

[Mark_Dorman]

I wasn't initially looking to increase the size of the rotors at first since the mr2's stock brakes are pretty good. I just wanted to use the wilwood dynalite calipers to reduce weight and brake fade (as well as upgrade to 4 pot calipers). I'd honestly rather keep the rotors under 12" to keep weight and rotating mass down. The supra tt rotors seem a little intense for such a small car.

[Oteck]

yeah, those supra tt are heavy as hell. glad my ls400 weigh less than 93s and fit under 16" rims lol

[Mark_Dorman]

I was also thinking of having a custom 4 wheel kit made by the guys at fastbrakes. That way I can get the correct bias and keep the size down so I don't add too much rotating mass. It would also open up the possibility for using two piece rotors. I was thinking 11.5" rotors would be good. Opinions???

[Gairloch]

You still haven't told us what you're hoping to accomplish or what power level the car is at ...

[Mark_Dorman]

My bad...I'm looking for more braking power, reduced brake fade, and reduction in unsprung weight (hence the dynalites) while still maintaining the proper brake bias between front and rear. I know a big brake kit just up front won't be as beneficial as a 4 wheel kit because of the mid engine layout. I'm making a street car that will see some track time. I'm looking at keeping the car around 200 hp and focusing on weight reduction and driving school rather than massive amounts of power.

[bcrdukes]

Originally Posted by crcrzy12

I'm looking at keeping the car around 200 hp and focusing on weight reduction and driving school rather than massive amounts of power.

You may as well buy a different car altogether.

[welsha]

oteck - I was looking into using the rx8 front disc but you say there is a problem with the pads not being used fully? Is that a GT4 calliper fitted to your fronts and if so how did you bolt it to the strut, adaptor or weld on a new strut mount?

[Mark_Dorman]

Originally Posted by bcrdukes

You may as well buy a different car altogether.

Last time I checked the cars weren't just built for massive horsepower...I got over that phase awhile ago. Plus 200+ hp in a 2600lb car is still a lot of fun.

[kbrew8991]

you can save weight via the brake system then (and money too)

decent pads (like the Carbotech XP8, maybe XP10s) will be all you'll need for just 200hp and 2600lbs in these cars

[Mark_Dorman]

^so staying modest in size and getting lightweight calipers and good pads is the best bet?

[kbrew8991]

the stock brakes are plenty. Why go through the hassle? just put in good components (pads & fluid)

[Mark_Dorman]

Mainly I just wanted to drop the unsprung weight and improve braking. I wasn't necessarily looking for bigger brakes...just better. It's probably wouldn't be worth it logically so I guess we'll see what my disposable income looks like haha

[kbrew8991]

to beat the dead horse further for people who might find this thread in a search:

I get full ABS engagement at ~110 on race tires with just XP8 pads on stock 1991 NA brakes... and get it all day long... MR2 stopping power is limited largely by tire grip when you take the steps to put aggressive components in the system that handle the heat

the turbo guys with alot more power and consequently straightaway speed to scrub off might need more than even the mighty 93+ Turbo upgrade. That power level where you'll need it will vary depending on how hot a climate you're racing in.. but from what I've gathered reading various MR2 road racer / trackday people's threads that level is well north of 300whp, and their cars are 2900+lbs to boot