DCH306

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Hitachi DCH306 was first used in the 1972 Datsun 1200 for North America. It is just like the original 1200 carburetor DCHG306, but the H version has an Automatic Choke. This series continued to be modified, with an anti-diesel valve added for 1973 and was futher developed well into the 1980s.

= Overview The DCH306 carburetor is a very good carburetor. It only has 3 or 4 vacuum hoses on it. California models eventually added ports for Altitute Compensation.

1972: Debut with automatic choke
1973: Anti-diesel valve added
1974: EGR port added
1975: 2 ports for an external Altitude Compensator added
 California models only
1981: 3rd port for Altitude Compensator fitted with a pipe
1981: Vacuum-controlled Secondary Throttle actuator added
1981: Replaceable fuel bowl sight-glass added

1981

New type sight-glass introduced. This type is replaceable unlike previous versions.

Now featuring 3 ports for an external Altitude Compensator. Only California models are fitted with pipes.

Altitude Compensator ports marked 1,2,3

Vacuum-Secondary introduced.

Big thing on top of fuel bowl.