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Upgrade your 1200's brake to large 258 mm (10.15") brakes -- and keep the lightweight 1200 struts! Thanks to mklotz and morrisun at Ratsun for this great idea. The rotors are 280ZX rear disks. The calipers are from 1980s Pulsar and Sentra/Sunny.
Also see: 280ZX Strut Swap for heavier, smaller vented brakes
Contents |
Overview
Bolt On Extra-large Brakes for Datsun 1200s -- no fabrication, no welding
- Lightweight disk rotors
- keep your lightweight 1200 disk struts
- fits under 13" aluminum wheels & 14" steel wheels
- No modifications needed to master cylinder
Will fit under 16 & 17" wheels too for you new-school fans
Uses: * 1982-1990 Nissan B11/B12 Sentra calipers * 1982-1983 Datsun 280ZX rotors
Doug Morrisun from Oregon came up with this idea: the lightest, largest brakes that would fit on the stock struts. To keep weight down, his idea was to use a solid rotor. Non-vented. He says that for a light 1200 street vehicle there is no fading.
Remove the 1200 disks from the hub, then put the 1200 hub back on the car.
you will need slightly longer wheels studs, from a wreckers or buy them new
Slip the new disks over the hub
Here's the trick: it needs a caliper spacer/adapter:
Weight: The 280ZX solids are 10.5 pounds vs. 11 pounds for the vented disks. However, you keep the original 1200 struts and hubs. So it is little lighter...
Alignment: The disks push the wheel mounting face out 1/2" each side, increaseing the Scrub Radius which is not good. But this is less that the 280ZX Strut Swap (hopefully).
Comparison
Rotor 258mm diameter vs 212mm stock 1200
Caliper 48mm single vs 48mm girling anette stock 1200
Pads D275/D233 108mm vs D41/D104 58mm stock 1200
B110 vs B310 pads
D275/D233 pad
Note: D275 is used by the factory Sunny Truck Disc Brakes, used with 208mm rotors to fit under 12" rims.
Details
280ZX front vented disk 252 mm, bolts to the 280ZX hub via small bolts, so won't bolt to your 1200 wheel hub:
280ZX rear solid (non-vented) disk 258 mm, simply fits over the lug nuts (captured/floating type), and it will fit over the 1200 wheel hub lugs:
Track width increase about 1/4" per side, 1/2" total.
Calipers are similar bore to the 1200 calipers, so the master cylinder reportedly does not need to be changed, nor the balance compensated for -- no need for a proportioning valve.
Parts & Specifications
Caliper
Nissan calipers 41001-05A90 (right) and 41011-05A90 (left)
The calipers are from:
JAPAN * B11 Sunny * B12 Sunny * G20 S-Cargo * M10 Prairie S5 * N12 Pulsar * N13 Langley USA * 1982-1990 Nissan B11/B12 (Sentra/Sunny) * 1983-1990 Nissan Pulsar N12/N13
Wreckers are full of these, but re-manufactured are only $21 each. Make sure you get the brackets with the calipers.
NOTE: These are Japan-built models all (Tokico, etc), so Australia PBR-equipped are not the same.
B110: caliper cylinder 1.894" KN13: caliper cylinder 1.893" (48mm)
KN13 USA Catalog CA <-- Not this * 41001-02Y00 0887-0989 CA18D * 41001-58A01 0986-0887 CA16D This <-- * 41001-05A90 GA15, E16 ** superceded 41001-61A01 *** superceded 41001-62A01 * 1982-1988 B11 * 1986-1989 B12 * 1988-1989 KN13 except CA engines * 1983-1985 N13 130mm caliper bolt spacing
RockAuto (1990 Pulsar NX SOHC Type) BECK/ARNLEY 0770371S Left BECK/ARNLEY 0770372S Right Centric 14142048 Left Centric 14242047 Right
Takes pad FMSI type D212.
Adapter
1/4" thick plate steel adapter. mklotz of Datsun NL320 disc brake retrofit fame is making some sets of the adapters. In black zinc. The adapters come with the special short bolts required.
Fits Pulsar 130 mm calipers to the 1200 disc brake strut. 1/4" thick.
Purchase from www.bluehandsinc.com or Mike Klotz(mklotz70)
$60 shipped (plated in black zinc). Comes with: * eight high-grade bolts with washers * Loc-tite
Add a bit for shipping outside the US. Mike uses USPS flat-rate International shipping, so the price of shipping is ultra-low.
Rotor
The 258mm rotors (43206-N9501/43206-N9502) are from the rear of:
JAPAN * 910 Bluebird 8201-8907 Z18E,Z20S.SSS,CA18E * C31 Laurel 8111- GX#+K.L20.MD * F30 Leopard 8107-8301 L20E# * R30 Skyline 8108- FJ20E+L20ET * S110 Silvia 8105- Z18ET+Z20E+FJ20 * U12 Bluebird 8709- 4WD + CA18DET,SR20DET * S12 Silvia 8308- * Z31 Fairlady 8309-8610 USA * 1982-1983 S130 280ZX 0981- * 1984-1986 S12 200SX 0184-0686 CA18ET, 1184-0686 CA20E * 1982 S110 200SX 0781- Z22E * 1982-1984 910 Maxima 0981- LD28.MT.F5 +S.LD28.AT +S.L24E
280ZX USA catalog (Turbo or Non-turbo. 2+2 or Coupe) * 268 mm <-- Not this one * 43206-P6500 ROTOR-DISC BRAKE,REAR 0778-0881 (1979-1981 Model year) ** superceded 43206-R4800 0778-0881
* 258 mm <-- This one * 43206-N9501 ROTOR-DISC BRAKE,REAR 0981- (1982-1983 Model year) ** superceded 43206-N9502
* 290 mm <-- Not this one from Europe 1983 Turbo
Rotors are only $16 each new at rockauto.com
* FERODO DDF659
* BREMBO 08.4852.10 More Info {#25111, 43206N9502}
* RAYBESTOS 9809
* CENTRIC 120.42016/121.42016
* RAYBESTOS 9809R
258 mm * Europe: 02/1980 To 09/1982 280ZX * USA: 1982-1983 280ZX * Diameter: 258 mm (10.15 inch) * Height: 47 mm (1.86 inch) * Thickness (nominal): 10 mm (0.39 inch) * Thickness (minimum): 9 mm (0.35 inch) * Hub Reg (center hole): 68 mm (2.68 inch) * Hat inside diameter: 156.25 mm * Bolt size: M12x1.25 (10.75 mm diameter) * Bolt circle: 4 on 4.5" (114.3 mm) * Weight: 4.1kg (9.0 lbs)
268 mm (for comparison, does not fit 1200) * 268 mm (10.565 inch) * Height: 68.5 mm * Thickness (nominal): 9.6 mm * Thickness (minimum): 8.6 mm * Hub Reg: 68 mm * Bolt size: M12x1.25 (10.75 mm diameter) * Bolt circle: 4 on 4.5" (114.3 mm) * Weight: 5kg (11 pounds)
COMPARISON 40206-P6510 (does not fit 1200) Diameter: 252 mm Thickness: 20 mm Center hole: 81 mm Height: 29 mm bolt center: 103 mm, 10.75 holes
Lug Studs
Since the rotors fit over the 1200 hubs, they add about 1/4" to the mounting face of the wheels. So you will need slightly longer Wheel Studs, which are common from a wreckers or buy them new.
NISMO 40222-A0220 [2" long/51mm] B110 or 510 FRONT
Mike Klotz recommends these studs, which the 510 guys use.
NAPA Balkamp 6412785 $2.29 USD each * Head Marks: 403 * Length: 45.5mm * Shoulder Length: 15mm * Knurl Diameter: 12.90mm They are for these OEM applications: * Infiniti J30 front 1995-93 * Nissan VAN Front 1988-87, From 1/88 * Nissan QUEST Rear 1998-93, From 1/88
Compare to Stock 1200: * Thread: M12 x 1.25 * Head Code: 240 * Knurl Diameter: 13.00mm * Thread Pitch: Right * Shoulder Length: 10mm * Thread Size: M12-1.25 * Length: 32mm * Type: Serrated Stud
1200 rear studs are the perfect length for the front, but use a smaller diameter knurl (12.56mm).
280ZX Rear Studs are likewise only 12.83mm.
See main article Wheel Studs for more choices.