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The engine cooling fan is attached to the water pump. Datsun 1200 uses a tough plastic 4-blade fan of 310 mm diameter (12.2 inch), which are strong and not known to break. Some newer A14 used the same diameter fan but with a negative offset and was used with a spacer. Datsun 1200 used no spacer, but used a longer water pump. Some newer A-series engines used a 330mm fan with spacer. 330mm fan was Datsun 1200 OPTION FOR TROPICAL USE. Datsun 1000 used a metal 4-blade fan.
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Overview
Pulley ratio: 1.08 * Fan pulley: 129 mm * Crankshaft Pulley: 139 mm
USA dealer option flex-fan
Comparison
There are five diameter of fans for RWD A-series engines:
- Small #Steel Fan: 280 mm metal 4-blade used on Datsun 1000
- #Plastic Fan: 310 mm diameter plastic (used on A10/A12/A13/A14/A15)
- #Large Plastic Fan: 330 mm diameter plastic (also B110 OPTION)
- #Electric Fan: 320 mm diameter, steel 5-blade (some 1980-1982 B310s)
- #Thermo Fan: B310 OPTION and PB310 (A15): 350 mm diameter , 7 blades
In USA, A/C 1200s got a flexi-fan (fibreglas blades), while B210/B310 used #2 above.
Generic metal blade fan (holes slotted for different engines)
Steel Fan
Datsun B10 used a small 280mm fan, consisting of two steel blades both bolted to the pulley/hub thus making a four-blade fan assembly.
Plastic Fan
Datsun B110 standard specification は標準仕様 is a tough plastic 4-blade fan.
310 mm Plastic fan * 3.82 diameter center section * 310 mm (12.2 inch) diameter blades * 1.28" thick * bolt pattern: 1.970" * hub locating hole: 1.24" * Bolts: (4) 10mm hex head, M8? threads
Early B110 used regular lock washers, later ones use metal strips and bent the up to lock the bolts.
310 mm fans came with these offsets:
Deep Dish Fan (B110) used with H10 long water pump: flange from back: 0.84" (20mm), from front: 0.35" (9mm). No spacer is used
Unknown Fan: flange from back: 5mm (reported)
Shallow Fan used with H72 short water pump: flange from back: 10mm, from front: about 1+". Requires spacer/adapter to match the pump bolt pattern
2007 Bakkie used the same fan
Large Plastic Fan
OPTION fan. Just like regular 310mm fan but with longer blades
21060-A4605 FAN-COOLING D=330 FOR TROPICAL USA (330 mm diameter) OP CRANK > 21060-N0100 * B110 21060-N0110 FAN-COOLING OP.COOLER 7804-8109 <x> 21060-G1210 21060-G1210 FAN-COOLING OP.COOLER 8110- 21060-H5700 FAN-COOLING (330 X 4) * B210 USA A13(1974), A14 (1974-1978) * B310 USA A14, A15 (1979-1982) * Datsun 720 * 1979-1980 Datsun C120 Vanette A12/A14 * 1986-1998 Nissan C22 Vanette A12 * 1989-1994 Nissan TC22 Vanette Truck A12/A15
NOTE * unknown if the hub offset is same for all these * A46 part number is from 1970 P510 L16 engine * N01 part number is from 1971 P510 L16 engine * G12 part number is from 1971 B120 * H57 part number is from B210 A12T (twin carb) engine
Thermo Fan
For the thermo-switched electric fan, see Electric Fan
Newer A-series engines (B310, C22, etc) -- especially those with aircon -- use a thermostatically controlled clutch fan.
350 mm diameter 21060-W5000ᴳ < 21060-W500A 7 blades * Datsun B310 OPTION * Nissan C22 Vanette A15 * Nissan C23 Serena LD23 diesel bolts to: Thermo clutch
B310 with aircon and PB310 (A15)
Thermo fan uses the short H72 water pump with no spacer
Late Model Vanette A/C Type
Electric Fan
Part Numbers
Nissan items, From USA catalogs: 21060-H1001 FAN-COOLING(310 X 4) * A12 [standard B110 fan] * B210 A13 (1974) * B210 A14 GFU models * B310 A12A, A14/A15 KFU 21060-H9920 FAN-COOLING(310 X 4) A15 Manual from 018021060-A4605 FAN-COOLING D=330 FOR TROPICAL USA (330 mm diameter) OP CRANK > 21060-N0100 21060-H5700 FAN-COOLING(330 X 4) A13, A14, A15 (1974-1982) 21060-W5000 FAN-COOLING(350 X 7) (FOR AIR-CON) B310 A14, A15, OPTION JAP.A12
Spacer/Adapters B110 - no spacer 21064-H5000 SPACER-FAN A13 [looks to be a thin spacer] 21064-H7200 SPACER-FAN A14 to 0779 [thin spacer] 21064-H9900 SPACER-FAN all From 0879 [thick spacer adapter] NOTE: HB210 used B110 pulley but with thin spacer
A12A with A/C 11720-H9911 BELT-FAN(977)(FOR AIR CON) OP A12 CAL from 0879 11721-H7210,11721-H7200 BELT-FAN(970)(FOR AIR CON) FED
A14 With A/C 21082-H7200 ASSY-COUPLING,FAN FOR AIR CONDITIONER A14 to 0776 * 11721-69900 BELT-FAN FOR AIR CONDITIONER(960M M) 21082-H7201 ASSY-COUPLING,FAN FOR AIR CONDITIONER A14 0876-up * 11721-H7200 BELT-FAN FOR AIR CONDITIONER(970M M)
21082-H9920 COUPLING ASSY-FAN (FOR AIR-CON) A15 from 0180 21082-H9100 COUPLING ASSY-FAN (FOR AIR-CON) OP A14,A15(CAL) 21082-H9300 TEMP COUPLING ASSY-FAN (FOR AIR CON) OP A14,A15(FED)