From Datsun 1200 Wiki

A Brake Booster was fitted to many disc-brake B210s, including most 1976-1978 models and all USA models. The booster was added to counter the increased weight of these models. It is a very small 4.5 inch diameter model. This booster is not a direct bolt-in for a (Datsun 1200) as the mounting points are different.

 (http://datsun1200.com/modules/myalbum/photo.php?lid=6800)

The booster has a:

• 4-bolt front with a thin (about 1 cm thick) aluminum adapter so that a 2-bolt vertical pattern Master Cylinder can be fitted
• 4-bolt rear mounting to firewall
• Spacer is a rectangular aluminum unit, about 2 inches long. It fits between the booster and the firewall.

B310 vs B210 style

• B310 has horizontal bolt-pattern master cylinder, Booster M60

   (http://datsun1200.com/modules/myalbum/photo.php?lid=2745)

• B210 has vertical bolt-pattern master cylinder, Booster M45

   (http://datsun1200.com/modules/myalbum/photo.php?lid=12371)

Table of contents

1 JDM 2 USA 3 Use in B110 4 Photo Index

JDM

JDM B210s of GX and GL trim from April 1975 were fitted with Disc front brakes. A brake booster was standard for GX, optional with GL. The booster is a very small diameter, the M45 Master Vac, same as used in the 510 and 610.

JDM - Disc Front Brake models

• 47210-U0501 MASTER-VAC (45) 1974-1975
  • 46010-U0601 CYLINDER ASSY-brake master tandem (3/4 inch)
• 47210-H6100 MASTER-VAC 1976-1978
  • 46010-H7500 CYLINDER ASSY-brake master tandem A12 GL
  • 46010-U0601 CYLINDER ASSY-brake master tandem A14, L16
• 47211-H6100 SPACER-master vac

Note that B210 (1976-1978) models without booster used a 2-bolt to 4-bolt adapter plate (thin sheet metal type). 1974-1975 models did not use this.

• 47230-H6100 BRACKET-BRAKE MASTER CYLINDER

USA

All North American B210s were fitted with Disc Front Brakes and a very small M45 brake booster.

• All USA B210 were fitted with a booster (entire brake system of PB110 specification for 1974-1975 models).

• 47210-H6100 ASSY-MASTER VAC SWI,FRA,GER,SWE,DEN,NOR,BEL,HOL,LUX
• 47210-H7200 ASSY-MASTER VAC from 0875 [Has warning label, can replace earlier unit]
• 47211-H6100 SPACER-MASTER VAC
• 46010-U0507 ASSY-CYLINDER BRAKE MASTER -0776 SWI,FRA,GER,SWE,DEN,NOR,BEL,HOL,LUX
• 46010-U0508 ASSY-CYLINDER BRAKE MASTER -0776
• 46010-H7200 ASSY-CYLINDER BRAKE MASTER 0876-0777
• 46010-U5201 ASSY-CYLINDER BRAKE MASTER 0877-

Use in B110

The B210 and B310 booster mounts to the firewall with 4 bolts, whereas Datsun 1200 (B110) has only two bolts drilled in the firewall. The shape of the firewall also differs.

1. drill larger center hole in firewall
2. Make 4-bolt to 2-bolt spacer/adaptor to go between the firewall and the booster

    (http://datsun1200.com/modules/myalbum/photo.php?lid=13370)

3. OR Use B210 firewall spacer
   1. drill two extra mounting holes in firewall

       (http://datsun1200.com/modules/myalbum/photo.php?lid=9519)  (http://datsun1200.com/modules/myalbum/photo.php?lid=9520)  (http://datsun1200.com/modules/myalbum/photo.php?lid=9521)

   2. change pedal box to new style

       (http://datsun1200.com/modules/myalbum/photo.php?lid=9522)

 (http://datsun1200.com/modules/myalbum/photo.php?lid=9669)  (http://datsun1200.com/modules/myalbum/photo.php?lid=9671)  (http://datsun1200.com/modules/myalbum/photo.php?lid=13359)

Photo Index

 (http://datsun1200.com/modules/myalbum/photo.php?lid=1858)  (http://datsun1200.com/modules/myalbum/photo.php?lid=1859)  (http://datsun1200.com/modules/myalbum/photo.php?lid=2086)  (http://datsun1200.com/modules/myalbum/photo.php?lid=2466)  (http://datsun1200.com/modules/myalbum/photo.php?lid=3149)  (http://datsun1200.com/modules/myalbum/photo.php?lid=4842)  (http://datsun1200.com/modules/myalbum/photo.php?lid=11372)  (http://datsun1200.com/modules/myalbum/photo.php?lid=11435)