Home
3.6 transplant
Brakes
Photo Gallery
More Info
wheels
|
|
If you have any corrections or additions, Please don't hesitate to let me know Brake Update
|
Links |
|
A summary of calipers;
Late Brembo
|
Caliper |
PCCB Ceramic |
PCCB Ceramic |
GT2 front |
GT3 front |
Big Red |
S4
front |
S4
rear |
S4 rear |
S4 rear |
GT2 rear |
GT3 rear |
basic
964 front |
basic
964 rear |
basic
964T rear |
basic
993 rear |
2 piston
964 rear |
|
type of mount |
radial |
radial |
radial |
radial |
radial |
radial |
axial |
axial |
axial |
radial |
radial |
axial |
axial |
axial |
axial |
axial |
|
|
front |
rear |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
pad area cm2 per caliper |
|
|
~154 |
153 |
151 |
112.5 |
112.5 |
112.5 |
112.5 |
|
|
86 |
86 |
86 |
86 |
56 |
|
pad width (mm) |
|
|
|
|
132 |
132 |
132 |
132 |
132 |
|
|
98 |
98 |
98 |
98 |
98 |
|
pad height (mm) |
|
|
|
|
58 |
48 |
48 |
48 |
48 |
|
|
44 |
44 |
44 |
44 |
44 |
|
pad thickness (mm) |
|
|
|
|
12 |
12 |
12 |
12 |
12 |
|
|
12 |
12 |
12 |
12 |
12 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
caliper weight w/o(w) pads lbs |
(12.7) |
5.4(7.8) |
|
|
(10.8) |
8.25(10.5) |
8.25(10.5) |
8.25(10.5) |
8.25(10.5) |
|
|
6.5(8) |
6.5(8) |
6.5(8) |
6.5(8) |
|
|
pistons |
6 |
4 |
6 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
4 |
2 |
|
|
28/32/34 |
28/30 |
28/32/34 |
28/32/34 |
44/36 |
44/36 |
36/30 |
28/28 |
30/28 |
30/28 |
30/28 |
40/36 |
30/28 |
30/34 |
30/34 |
44 |
|
|
monobloc |
monobloc |
ceramic inserts |
|
|
|
|
|
|
ceramic inserts |
|
|
|
|
|
|
|
rotor (mm) |
350x34 v,perf |
350x28 v,perf |
330x34 or 350x34 |
330x34 |
322x32 |
304x32 |
322x28 |
322x28 |
322x28 |
330x28 |
330x28 |
298x28 |
299x24 |
299x28 |
299x24 |
299x24 |
|
rotor wt lbs |
~12 |
~12 |
25 |
27 |
18 |
14 |
19.75 |
19.75 |
19.75 |
|
|
|
|
|
|
|
|
Original chassis |
996tt |
996tt |
GT2 front |
GT3 front |
993 RS frt 993tt frt |
993 C4 frt 993 C2 frt |
993 RS rr. |
993tt rr. |
993C4S rr. |
GT2 rear |
GT3 rear |
964 frt |
993 C4
rr, |
964t/tl rr. |
993 C2 rr
964RS rr. |
964 C2 rr |
Early 930,911
|
Caliper |
930 front |
917 front |
930 rr |
917 rr |
Wide A |
A |
Wide M |
S |
M rr |
M frt |
Narrow M fnt |
Wide L rr |
Narrow M rr |
Narrow L rr |
|
type of mount |
trans
3.5" |
trans 3.5" |
trans
3.5" |
trans 3.5 |
trans
3.5" |
trans 3.5" |
trans
3" |
trans
3.5' |
trans
3" |
trans
3" |
trans
3" |
trans
3" |
trans
3" |
trans
3" |
|
pad area cm2 per caliper |
94 |
|
94 |
|
76 |
76 |
52.5 |
78 |
52.5 |
52.5 |
52.5 |
40 |
52.5 |
40 |
|
pistons |
38/38 |
38/38 |
30/30 |
|
2x48 |
2x48 |
2x42 |
2x48 |
2x38 |
2x48 |
2x48 |
2x38 |
2x38 |
2x35 |
|
pad thickness (mm) |
13 |
|
13 |
|
10 |
10 |
10 |
13 |
10 |
|
|
|
|
|
|
caliper weightw/o(w) pads |
8.26(10.3) |
|
8.26(10.3) |
|
|
9.5(11) |
|
|
7(8) |
|
|
|
|
|
|
rotor (mm) |
304x32v/d |
304x32 |
309x28v/d |
|
282.5x24v |
282.5x20v |
290x24v |
282.5x20v |
290x20v |
282.5x20v |
282x18solid |
290x20v |
290x18s |
290x18s |
|
rotor weight |
14 |
|
17.25 |
|
|
8 |
|
|
12 |
|
|
|
|
|
|
Original chassis |
78-89 930 |
917 |
78-89 930 |
|
84-89 911 |
76-83 011 |
84-89 911 |
69-75 911 |
69-83 911 |
67-73 911 |
64-67 911* |
66-68 911* |
68-69 911* |
64-67 911* |
*mixture of uses T,E,S,
Sportmatic etc.
Summary of brake systems used in various
chassis;
Late model(thru'95) 964/993
| |
993 GT2 Rennversion '97 |
'96-98 993 Twin Turbo |
'94-95
993 RS |
'96-98 993 C4S |
'94-95 993 C4 |
'94-95 993 C2, C2S |
'94 964 Turbo
3.6 |
'92-94964 TL &
3.3T |
'92-93 964 RS |
'93-94 964 RSA C2 |
'90-91 964 C2 2pist rr |
'89-94 964 C4 |
964 C4 TL |
| Booster |
hyd |
hyd. |
hyd. |
hyd. |
hyd. |
9" vac |
hyd. |
hyd. |
hyd. |
8" vac |
8" vac |
hyd. |
hyd. |
| Boost Coeff. |
3.6 |
3.6 |
3.6 |
3.6 |
4.8 |
3.15 |
4.8 |
4.8 |
3.6 |
3 |
3 |
4.8 |
4.8 |
|
Master Cylinder (mm) |
25.4 |
25.4 |
25.4 |
25.4 |
25.4 |
23.81 |
23.81 |
23.81 |
25.4 |
20.64 |
20.64 |
23.81 |
23.81 |
| Mast. Cyl. Stroke (mm) |
|
17/15 |
17/15 |
17/15 |
17/15 |
22.5/13 |
20/12 |
20/12 |
20/12 |
20/16 |
20/16 |
20/12 |
20/12 |
|
Prop. Valve bar |
|
|
40 |
|
40 |
40 |
60 |
60 |
55 |
55 |
45 |
55 |
33 |
| reduction factor |
|
|
0.46 |
|
0.46 |
0.46 |
0.46 |
0.46 |
0.46 |
0.46 |
0.46 |
0.46 |
0.46 |
|
Rotors front (mm) |
380x32 2piece alum. hat |
322x32 2piece steel hat |
322x32 |
322x32 |
304x32 |
304x32 |
322x32 |
322x32 |
322x32 |
298x28 |
298x28 |
298x28 |
298x28 |
|
Caliper front |
993 351 427 82 left 993 351 428 82 rt |
Big Red |
Big Red |
Big Red |
S4 |
S4 |
Big Red |
S4 |
S4 |
basic |
basic |
basic |
basic |
|
Pistons (mm) Trail |
42 |
44 |
44 |
44 |
44 |
44 |
44 |
44 |
44 |
40 |
40 |
40 |
40 |
|
Lead |
34 |
36 |
36 |
36 |
36 |
36 |
36 |
36 |
36 |
36 |
36 |
36 |
36 |
|
Pad area frt. axle (cm2) |
|
302 |
302 |
302 |
250 |
250 |
302 |
250 |
250 |
172 |
172 |
172 |
172 |
| pad width
(mm) |
|
132 |
132 |
132 |
132 |
132 |
132 |
132 |
132 |
98 |
98 |
98 |
98 |
|
pad height (mm) |
|
58 |
58 |
58 |
48 |
48 |
58 |
48 |
48 |
44 |
44 |
44 |
44 |
|
pad thick. frt (mm) |
24 |
11 |
11 |
11 |
11 |
11 |
12 |
12 |
12 |
12 |
12 |
12 |
12 |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Rotors rear (mm) |
322x28 |
322x28 |
322x28 |
322x28 |
299x24 |
299x24 |
299x28 |
299x28 |
299x24 |
299x24 |
299x24 |
299x24 |
299x28 |
|
Caliper rear |
|
S4 |
S4 |
S4 |
basic |
basic |
basic |
basic |
basic |
basic |
2 pist |
basic |
basic |
|
Pistons (mm) T |
28 |
28 |
36 |
28 |
30 |
34 |
34 |
34 |
34 |
30 |
44 |
30 |
34 |
|
L |
28 |
28 |
30 |
28 |
28 |
30 |
30 |
30 |
30 |
28 |
|
28 |
30 |
| pad area rr
axle (cm2) |
|
250 |
250 |
250 |
172 |
172 |
172 |
172 |
172 |
172 |
112 |
172 |
172 |
| pad width
(mm) |
|
132 |
132 |
132 |
98 |
98 |
98 |
98 |
98 |
98 |
98 |
98 |
98 |
|
pad height (mm) |
|
48 |
48 |
48 |
48 |
44 |
44 |
44 |
44 |
44 |
44 |
44 |
44 |
|
pad thick. rr (mm) |
18 |
12 |
12 |
12 |
12 |
12 |
12 |
12 |
12 |
12 |
12 |
12 |
12 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| pad area total
(cm2) |
|
552 |
552 |
552 |
422 |
422 |
474 |
422 |
422 |
344 |
284 |
344 |
344 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| parking brake
(mm) |
|
180x25 |
180x25 |
180x25 |
180x25 |
180x25 |
180x25 |
180x25 |
180x25 |
180x25 |
180x25 |
180x25 |
180x25 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Hyd. Bias
Ratio |
|
2.061 |
1.472 |
1.919 |
1.919 |
1.572 |
1.572 |
1.572 |
1.572 |
1.720 |
1.496 |
1.720 |
1.409 |
| effective
H.B.R. with prop. valve |
|
3.554 |
2.725 |
3.554 |
3.554 |
2.911 |
2.911 |
2.911 |
2.911 |
3.185 |
2.770 |
3.185 |
2.608 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| slave/master ratio |
|
14.9 |
16.8 |
15.2 |
15.2 |
18.7 |
18.7 |
18.7 |
16.4 |
21.5 |
22.7 |
16.2 |
17.5 |
Early 930,911
| |
'84 930 |
'85-87 930 |
'84-89 Carrera 3.2 |
'82-83 930 |
'78-81 930 |
'77-83 911 |
'76 Carrera 3.0 & 69-76 S |
'76 Carrera 3.0 mod.1 |
76 Carrera 3.0 mod.2 |
| Booster |
8" vac |
8" vac |
8" vac |
8" vac |
8" vac |
7" vac |
pedal ratio 5.2 |
none |
none |
| Booster Coefficient |
2.22 |
3 |
2.22 |
3 |
3 |
2.22 |
NA |
NA |
NA |
| Master Cylinder
(mm) |
23.81 |
23.81 |
20.64 |
23.81 |
23.81 |
20.64 |
19.05 |
23.81 |
23.81 |
| Master Cylinder Stroke
(mm) |
18/14 |
18/14 |
20/12 |
18/14 |
18/14 |
20/12 |
18/13 |
|
|
|
Proportioning Valve (bar) |
33 |
55 |
33 |
55 |
NA |
NA |
NA |
NA |
NA |
| reduction factor |
0.46 |
0.46 |
0.46 |
0.46 |
NA |
NA |
NA |
NA |
NA |
| rotors
front |
304x32 |
304x32 |
282.5x24 |
304x32 |
304x32 |
282.5x20 |
282.5x20 |
304x32 |
322x32 |
| caliper
front |
930 |
930 |
wide A |
930 |
930 |
A |
A |
964 front |
993RS front |
| pistons
(mm) leading |
38 |
38 |
48 |
38 |
38 |
48 |
48 |
40 |
44 |
|
trailing |
38 |
38 |
|
38 |
38 |
|
|
36 |
36 |
| pad area
front axle (cm2) |
188 |
188 |
152 |
188 |
188 |
152 |
152 |
172 |
302 |
| pad width
(mm) |
98 |
98 |
78 |
98 |
98 |
78 |
78 |
98 |
132 |
| pad thickness
front (mm) |
13 |
13 |
10 |
13 |
13 |
10 |
10 |
12 |
11 |
| rotors
rear (mm) |
309x28 |
309x28 |
290x24 |
309x28 |
309x28 |
290x20 |
290x20 |
309x28 |
322x28 |
| caliper
rear |
930 |
930 |
wide M |
930 |
930 |
M |
M |
964 rear |
993RS rear |
| pistons
(mm) leading |
30 |
30 |
42 |
30 |
30 |
38 |
38 |
30 |
30 |
|
trailing |
30 |
30 |
|
30 |
30 |
|
|
28 |
36 |
| pad area
rear axle (cm2) |
188 |
188 |
105 |
188 |
188 |
105 |
105 |
172 |
250 |
| pad thickness
rear (mm) |
13 |
13 |
10 |
13 |
13 |
10 |
10 |
12 |
11 |
| pad width
(mm) |
98 |
98 |
78 |
98 |
98 |
78 |
78 |
98 |
132 |
| pad area total
(cm2) |
376 |
376 |
257 |
376 |
376 |
257 |
257 |
344 |
552 |
|
|
|
|
|
|
|
|
|
|
| parking brake
(mm) |
180x25 |
180x25 |
180x25 |
180x25 |
180x25 |
180x25 |
180x25 |
180x25 |
18x25 |
|
|
|
|
|
|
|
|
|
|
| Hydraulic Bias
Ratio |
1.604 |
1.604 |
1.306 |
1.604 |
1.604 |
1.596 |
1.596 |
1.720 |
1.472 |
| effective
H.B.R. with prop. valve |
2.971 |
2.971 |
2.419 |
2.971 |
|
|
|
|
2.725 |
|
|
|
|
|
|
|
|
|
|
| slave/master ratio |
16.5 |
16.5 |
19.1 |
16.5 |
16.5 |
17.6 |
20.7 |
16.2 |
19.165 |
|
|
|