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The Datsun 1200's A12 engine uses a standard type oil pump. The oil should be changed every 3,000 to 5,000 miles.
Also see: Oil pressure indicator lamp: Wiring
Contents |
Oil Temperature
Also See: Oil Pump Coolers
The oil temperature is controlled by the engine coolant temperature. As long as the engine coolant ("water") does not overheat, neither will the oil. Only a very few high performance cars have a separate oil cooler. So this means:
keep your coolant temp low, and your oil temp will be happy.
Count on the oil temp to be about 20 F degrees hotter. So here is a good street performance equation:
- Thermostat: 180 F degrees
- Oil temp will run about 200 F degrees
At this temperature, the good quality regular oil (inexpensive) will perform as good as the expensive synthetics in a street car. It is high temps that ruin regular oil whereas the synthetic oil can take high temps OK.
Now if you are racing or towing there is more to talk about.
Engine oil capacity
- Oil pan: 2-7/8 U.S. qts., 2-3/8 Imper. qts. (2.7 L)
- Oil filter: 1-1/8 U.S. pints, 1 Imper. pint. (0.54 L)
Oil Pressure Sender
Nissan part number 25240-89910 SWITCH ASSY-OIL PRESSURE $17 USD See Switch Part Numbers
Fits A-series and some L-series, Z-series, E-series and CA-series engines.
From the 1973 factory service manual:
- Oil pressure at idle (650 RPM ): 13-17 psi
- Regulator valve spring
- Free Length: 43.49 mm (1.71 inch)
- Pressured Length: 30.3 mm (1.19 inch)
- Regulator opening pressure: 54-60 psi
Oil Pressure Gauge
The oil pressure switch threads is 1/8 BSPT (british standard pipe tapered). It screws directly into the oil pump housing.
If you instead thread a Tee connector, you can fit both the sensor and a separate gauage. Tees are avaialable in the usual auto supply stores such as Repco or Oreillys.
Tee fitted to oil pump [Old Method, no longer recommended]
Right: this engine has the Tee (and an oil cooler)
New Method
A word of caution with this: they tend to break, perhaps due the weight of the sender at the end of the tee piece and the vibration of the engine. The solution is to use a braided hose from the oil sender hole out to the bodywork, and then mounted the tee with senders in place.
Datsun Nationals 2005 .. I think 3 different cars had their brass t-piece fail resulting in oil all over wakefield track. Definitely mount the brass fitting on the bodywork, not the engine. dattodude
Oil Usage
It is normal to add some oil between the oil changes. Usually a quart every 1,500 miles is OK. A quart every 500 miles indicates either a serious leak, or "oil burning" (bad rings) in the egine.
Oil Specifications
Interchangeability
All A-series oil pumps are interchangeable except early A10 models. New pumps work with early A10 connection rods.
- connecting rod cap strengthened with 1mm longer bolt boss starting with A10-728641
- Therfore, Oil pump driveshaft decreased 1.5 mm to clear the new cap design
Part Numbers
Also see: Oil Filter
USA
B110 RAW LIST 15010-H9701 ASSY-PUMP OIL WITH OUT OIL FILTER 15010-H6200 ASSY-PUMP OIL WITH OUT OIL FILTER 15010-H1000 ASSY-PUMP OIL WITH OUT OIL FILTER 15020-H1025 ASSY-SHAFT DRIVE OIL PUMP 15020-H1005 ASSY-SHAFT DRIVE OIL PUMP 15025-18003 GASKET-OIL PUMP 15132-H1000 ASSY-VALVE OIL REGULATOR 08310-53010 SET-BOLT BODY TO COVER 08915-13510 WASHER-SPRING 15066-18000 GASKET-OIL PUMP TO CYLINDER BLOCK 08915-13810 WASHER-LOCK 15036-18000 BOLT-OIL PUMP 08110-85510 BOLT 15050-H1000 ASSY-STRAINER OIL 15053-18000 GASKET-OIL STRAINER 08110-82010 BOLT 08915-13810 WASHER-LOCK
Nissan Competition Parts
LUBRICATION (A-SERIES)
- 15010-25720 COMPETITION OIL PUMP Generates an oil pressure of over 100psi and does not self prime
- 15010-M0821 COMPETITION OIL PUMP (FWD) Similar to 15010-25720 except unit is designed for FWD Datsuns with A-series engines
- 11710-H5720 ALTERNATOR BRACKET For use on B210 and 210 models when installing 15010-25720 oil pump
- 15025-25720 GASKET FOR COMPETITION OIL PUMP T= 0.10mm (Yellow)
- 15025-25721 GASKET FOR COMPETITION OIL PUMP T=0.12mm (Blue)
- 15025-25722 GASKET FOR COMPETITION OIL PUMP T = 0. 1 4mm (Green)
- 15010-M0821 DRY SUMP OIL PUMP Similar to 115010-25720
except has additional fittings for dry sump system
- 15025-H5720 GASKET FOR DRY SUMP OIL PUMP T = 0. 10mm (Yellow)
- 15025-H5721 GASKET FOR DRY SUMP OIL PUMP T = 0. 1 2mm (Blue)
- 15025-H5722 GASKET FOR DRY SUMP OIL PUMP T = 0. 14mm (Green)