Carburetor

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See Carburetor Overview. The carburetor mixes air with gasoline in the proper ratio for all conditions. 14.7 to 1 by weight is the chemically correct ratio, but engines can work with 8:1 (very rich) to 22:1 (lean burn). For best power, it's about 12:1, but for best econonmy is is about 18:1. The stock Hitachi carburetor (when in good condition, i.e. not worn out) does an excellent job of providing superb economy but providing a rich power on demand. The Hitachi keeps in within the appropriate range for all throttle openings, temperature and loads. No dyno tuning is necessary. Since it works on airflow, not engine size, the Datsun 1200 Hitachi works acceptably on engines from A10 to A15 without changing the jets. As the airflow changes, the carburetor meters the fuel accordingly. Changing the jets is only necessarily for fine tuning of engine modifications (or if major modifications to the induction system are made such as a high-overlap camshaft).

Part Numbers

http://www.rockauto.com

• TOMCO 10002A AT w/Electric Choke $200.79, MT w/Electric Choke $204.79 USD Carburetor (remanufactured)

China "16010-H1602" discussion

Choke Pull Off

• Nissan 16011-H3910
• 7248

  

• TOMCO 7211 (Type HI-2), A12A 1981-1982 (strait fitting) $9
• TOMCO 7213 A14 1978-1981 (80-degree fitting)

  

• 7281 1978-1980

  

• TOMCO 7386 A12A 1980 (90-degree fitting)
• TOMCO 7390 A14 1975-1978 (90-degree fitting) $8

Anti-Diesel valve

• TOMCO 8134 $36
  • Chevy Luv Truck 1975-1980
  • Ford Courier Truck 1979-1980
  • Honda 1973-1976
  • Mazda 1975-1978
  • Datsun 1973-1983
  • Subaru 1974-1980

Late Model A12 carburetor gasket

Insulator

Heat Shield

Gaskets