Brake master cylinder

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Datsun 1200 used two basic brake master cylinders:

• safety split circuit, used with disc-brake models
• single reservoir, used with economy drum-brake models

Reverse-Mounted Master Cylinder

Fitting an under-dash brake master cylinder is sometimes done to LHD 1200s so we can fit dual sidedraft carbs. It is legal in USA (very few states have any kind of mechanical inspection).

As you can see, LHD cars have little room for both the brake cylinder (on left side of engine compartment) when bigger carbs are fitted:

Take a master cylinder mount from a 510 and weld it to the top of the 1200's steering colum support. Then weld an extension to the top of the brake pedal and makee a rod to connect the master cylinder from the brake pedal.

Changing the position of the rod from below pivot point to above changes the direction from pushing out toward front of car to pushing out towards rear.

280zx master cylinder reverse mounted under dash

• A remote fluid reservoir would be easiest (e.g. Datsun F10 style)
• It only take a minute to remove dash for access

Sometimes the same is done when fitting large engines or turbo setups which leave no room for the stock master cylinder.

For more ideas, see Clutch master cylinder