Datsun 1000 disc brakes

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Overview

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Datsun B10 stub axle is same dimensions as Datsun B110, so they 1200 hub can be bolted on. That means any disc rotors that work with 1200 can be fitted to the 1000.

The key to a successful swap is in the caliper choice and mounting. Since there are no caliper mounts on a 1000, an adapter bracket must be used. A custom bracket can be fabricated or a Sigma GE bracket can be adapted.

For safety, a tandem (dual circuit) master cylinder is a must, such as a 1200 brake master cylinder
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Sigma Swap

Requires 13" wheels

Swap pioneered by asunny and D, photos by LAGWAGON
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* B110 disc hub (newer 1200 hubs differ)
* Mitsubishi/Chrysler rotor 229mm
* PBR caliper
* Sigma GE bracket
* strongly recommend a dual-system master cylinder
  B110 or 120Y (non-boosted) master cylinder
* Rear wheel cylinders swapped for 11/16" units

Weld the holes in the bracket, and drill new holes to suit the 1000.
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ROTOR sizes
* Mitsu: 229 mm
* Late 120Y: 220 mm
* 1200: 212 mm

Bolt modified Sigma bracket to 1000 axle
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B110 hub 
* 1970-1973 1200 w/disc brakes
* 1974-1975 120Y w/disc brakes
(1976-1978 120Y differs)

early Sigma caliper machined to fit 1200 disc hub (inner circumference lathed by 3mm)
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• disc centres machined out to suit the 1200 disc hubs
• 3 holes redrilled on the caliper bracket
• Finish a little of the corner of the new pads for clearance
• Use the standard flexible brake line from the 1000 wagon

PBR CALIPER
* CHRYSLER Sigma GE PBR Front Disc 1978-1980
* NISSAN 120Y Sedan P.B.R Front Disc 1977-1979 

DISC ROTOR 229 mm
RDA 210
RAYBESTOS 9094R $22 Amazon.com
* 1971-1980 Dodge Colt USA (with 229mm rotors)
* 1976-1980 Plymouth Arrow USA
* 1978-1980 Sigma GE (Chrysler Australia)
* Mitsubishi Galant GC, GD 1974-1977
* Mitsubishi Lancer LA, LB, LC 1974-1981
Outside Diameter: 229 mm (9.005")
Overall Height: 30mm (1.18")
Number of Bolts/Holes: 4
Bolt Circle: 86mm (1200 disc hub is 87 mm)
Discard Thickness: 11.4mm (0.449")
Solid (non-vented)

257mm Brakes

Requires 14" rims

1200 hubs with U12 Pintara 257 x 22 mm vented rotors with Commodore VK Girlock calipers (same as Skyline R31 calipers but without the external fins which limit rim selection).

Photo is of Datsun 1000 suspension with B110 disc brake hubs. A custom steel bracket is fabricated for the caliper mounting.
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• If you use B110 drum hubs, no machining is needed, and track is not increased.
• If you use B110 disc hubs, the hub must be machined and track is increased.

257mm ROTOR
* U12 Pintara
* U12 Bluebird 8709-9108
* S13 USA
* and more

Hamilton

Gary Hamilton managed to squeeze RX7 4-spots on his 1000 sport sedan which uses 13" wheels, but don't ask me how!

Gary Hamiltons 1000 Coupe
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