[jdk_ii]

Big Brakes for the MK2

http://www.celicasupra.com/bigbrakes.htm

 

[jdk_ii]

Re: your big o brakes

how do you oder that kit? i would like one in the future thats nice

Given the low demand, this actually may be the last time these are offered.

Value-wise, the end cost is actually less than several popular
aftermarket BBK's (ie, Honda, etc).

 

[jdk_ii]

Looks more like May.

A few folks joined in the group buy at the last moment.

Most round parts will be done in April. Caliper brackets require
use of their big milling machine, which is always busy.

I'll keep everyone notified via e-mail as I did last time.

 

[jdk_ii]

I wish I knew if I was getting my MkII back... grrr.

Does the kit require a proportioning valve, Jim?

When is the cut-off date?

With the 7" wide wheels I initially used, the fronts would start locking
sooner than the rears (rears had stock pads).

8" wide wheels, I doesn't occur.

So, some slight proportioning may be required. I've seen them
for about $40.

The rear BBK will definitely change the dynamics. I'll determine
it's priority once I get them installed.

The cut off date has passed, but I do have some slight flexiblity
with the front BBK.

The rears already have the material on order, which is taking over
a week to arrive here.

 

[jdk_ii]

Jim,
What is the deal on the brake lines? I didn't hear much on that and would need them. I have the Technafits for the stock setup but I presume I they are not going to work with the BBK.

Once the rear setup is done, I'll be contacting Technafit about
the custom rear line.

I will get a package price for front, then front/rear setup.

 

[jdk_ii]

^^^ roger that

Technafit is to send me a one piece front line to try.

 

[jdk_ii]

Jim,
Are all the kits being built now spoken for? Is the $300 for the fronts or fronts & rears? Thanks..

$310 US by money order, $320 by PayPal

$340US by money order, $351 by PayPal.

I can only fit in front orders as the rears drums might
start machining next week...

 

[jdk_ii]

so is that 310 for the front and 340 for the rear.......

Yes. End total for fronts with calipers, pads, rotors and lines is still less
than many Honda BBK's.

I only supply the rotor adapter, caliper bracket and bolts.

This allows some an easier time to buy these, then save
up for the rotors, calipers, etc.

 

[jdk_ii]

Jim, any production updates on the BBK's? Thanks.

Targeting the end of May. Will send news when it happens.

I have to make my weekly visit to remind them.

 

[jdk_ii]

They are finish the "round" items this week.

The rear drums were in the machine this morning.

Still looking like the end of May.

Will keep informed.

 

[jdk_ii]

Caliper brackets being machined today and tomorrow.

Then off to plating.

Yikes, I might even have a set to install this weekend!
(ok, might be wishful thinking...)

 

[jdk_ii]

I will post here if there are any left.

There are a few people in line waiting on these.

 

[jdk_ii]

Rear BBK pics!

Still waiting on the correct rear brake lines from Technafit...

Here are some pics on the bench.

Front:

Top view:

 

[jdk_ii]

Fronts are also 12.19 diameter, but 1.25 thick.

The rears have smaller pistons, as rear braking does
not require the same brake torque as the fronts.

click ->http://www.celicasupra.com/bigbrakes.htm

 

[jdk_ii]

Status: still waiting on the Stuart at Technafit to send the correct rear lines.

 

[jdk_ii]

I know the brakes are designed for the 1.25" thick but just out of curiosity what made you pick that width? That seems awefully thick, not that I'm complaining, but would that have any detrimental effects such as taking a long time to heat up to operating temp, much larger rotating mass, etc etc?

A few reasons.

Most cars now of this weight range use 1" thick front rotors.

The Coleman rotors I used for the fronts were considered light duty racing.
They appear like heavy duty car rotors. The Coleman HD rotors are very thick.

With the added extra brake torque, cold stopping is very good.

Warmed up, well, it's very nice.

 

[jdk_ii]

Yes, I have Coleman's on the front. About $20 more than Wilwood's.

Actually, I believe the total weight is less than the stock setup.

 

[jdk_ii]

BILLET DYNALITE CALIPER


BORE SIZE DISC WIDTH PART NUMBER
1.75” 44,5 mm 1.25” 31,8 mm 120-4998 (FRONT)
1.38” 35,1 mm .81” 20,6 mm 120-5005 (REAR)


Pads: Wilwood, Porterfield, Hawk.

Rotors: I used Coleman light duty straight vented rotors.

12.19 x 1.25, 7" bolt circle (FRONTS)

12.19 x 0.81, 7.625 bolt circle (REAR)

 

[jdk_ii]

I bought everything from www.colemanracing.com

The rears do require the threaded hole version.

You can get the HD fronts. They are *much* heavier.\
A bit much for a 3100 lb car.

I can check at home if I have the Coleman part numbers.

 

[jdk_ii]

Looks like I got the fronts as: L125-1218-87

Rears, I don't have the number here, but there is only
one I found at Colemans: L81-1218-762

It has to have the threaded bolt holes.

I currently have Porterfields, but may consider Hawks
as they produce less brake dust.