Mazda rotary engine swap

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The Mazda rotary engine is a good match for Datsun 1200 -- it is light and compact. It makes more power than a piston engine of the same size and weight. The engine weight is down low so it doesn't prevent good handling.

Performance

Quarter Mile drag performance ranges from quick to insanely quick. With a totally stock rotary engine you won't be wanting for power.

• 16.1 at 90mph: bone stock 12a engine tuned by ear
• JVML's 8.1 second 13B twin turbo
• Ange's 13.7 second 12A bridgeport

Discussions

• Project: SUNNY COUPE GX (13B COSMO TURBO)
• Rota 1200
• Rotary 1200 Coupe, 6 Speed

Engine

The Mazda rotary comes in two common sizes: 12A and 13B. In Australia, choose a 12A for street legal swaps. Everyone else, choose the 13B. There are less common versions, the old 10A and the ultra-rare and expensive 20B triple rotor.

Mazda 13B rotary engine

Mazda 13B Turbo rotary engine

Factory EFI 13B Turbo

Engine Mounts

Differential

• Will a H165 rear end handle a bridgeported 13b?

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