DCR306
For 1981 North American sunny models, the "new" DCH306 carburetor — the Hitachi DCR306 — is introduced
* Vacuum-controlled Secondary Throttle actuator added * Replaceable fuel bowl sight-glass added * Vented fuel bowl incorporated
DCR
1981
1981 USA DCR306 came with the whole gamut of features.
* Removable fuel bowl sight-glass * Vacuum-Secondary * Externally-vented fuel bowl * Altitude Compensator ports (although some DCH306 had these previously)
Removable sight-glass
Vacuum-Secondary introduced
typically anti-tampering features helps prevent mis-adjustments
Fuel bowl is now externally vented.
This goes to a special 5-hose Charcoal Canister. The canister has a Vent Switching Valve which is open when the engine is not running, so that vapors from the fuel bowl can go directly to the charcoal filter. When the engine starts, vacuum from the intake manifold closes the VSV.
See main article: Carbon Canister
*Altitude Compensator ports marked 1,2,3
4, 3, 2 are used on Altitude Compensator models
Throttle cable bolts above the throttle opener
1982
1982 USA
X, 2 are plugged; only used on Altitude Compensator models
Versions
DCR306 numbering appears to be continued from DCH306 versions.
B310 DCR306-100 1981 FED A12A DCR306-101 1981 FED A15 MT DCR306-102 1981 FED A15 AT DCR306-104 1981 FED A14 MPG DCR306-106 1982 FED A12A DCR306-107 1982 FED A15 MT DCR306-108 1982 FED A15 AT DCR306-109 1982 FED A14 MPG DCR306-110 1981 CAL A12A DCR306-111 1981 CAL A15 MT DCR306-112 1981 CAL A15 AT DCR306-116 1982 CAL A12A DCR306-117 1982 CAL A15 MT DCR306-118 1982 CAL A15 AT DCR306-120 1981-1982 CAN A12A DCR306-121 1981-1982 CAN A15 MT DCR306-122 1981-1982 CAN A15 AT
N10 DCR306-103 1981 FED A15S 16010-M6660
Applications
1981-1982 B310 USA "210" w/A12A,A14,A15 1981 N10 USA "310" w/A15S 1982 N10 USA "310" w/E15S 1982-1983 B11 USA "Sentra" w/E15S AND MORE???
NOTE: 1982 Sentra "MPG" model used electronic feedback carburetor DFP306
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