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[Datsun 1200 encyclopedia]

Oil Pressure Sender

Revision as of 01:49, 16 May 2014; view current revision
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Category: Engine Lubrication System

Datsun 1200 used a simple on/off switch for an Oil Pressure Sender, to operate a so-called "idiot light" on the dash.

Contents

Overview

oil pump

Specifications

19998.jpg

Thread Size - 1/8" x 28 British Standard Pipe Taper (BSPT)
Terminal Type: Bullet, Male
Operating Pressure - PSI: 3 - 9 psi

Wiring

1200 uses an "idiot light" (pilot lamp on the dash) to warn if oil pressure has dropped.

See: Oil Light Wiring

Part Numbers

Nissan part number
25240-89910 SWITCH ASSY-OIL PRESSURE $17 USD
See Switch Part Numbers
Aftermarket
Airtex/Wells 1S6539
AdvanTech 2G8
Standard Motor Products PS171
AC/Delco E1802
Beck/Arnley 201-0262

Interchange

The stock Datsun 1200 oil pressure switch fits A-series and some L-series, Z-series, E-series, Diesel and CA-series engines. Also fits certain GM, IHC and Isuzu engines.

Datsun 1200 sender uses bullet connector.

Buy at RockAuto.com
C2CC0185602614888812.jpg
NOTE: Some other Datsun senders use a spade connector or a screw connector

Nissan 25240-89902, 25240-89910
GM 94118755, 94312940
IHC 478097-C1
Isuzu 8-94118-755-0, 8-94312-940-0
Beck/Arnley 201-0262
* Geo 1985-1991
* Honda 1986-2009
* Isuzu 1985-2004
* Mazda RX2 1971-1973
* Datsun B110/B210/B310
* Datsun F10/N10
* Datsun 411/510/610/810/910
* Datsun 710
* Datsun pickup 520/521/620/720
* Nissan Micra 1984-1999
* Nissan Pulsar 1982-1984
* Nissan B11 1983-1985
* Nissan Stanza T11 1983-1986

For Pressure Gauge

Other Datsuns came with a pressure gauge, and used this switch:

Buy at RockAuto.com
th_1S6571.jpg
Datsun 720 Pickup

Thread Size 1/8-28 ISO Tapered Thread
Switch to close at 3-10 PSI
0-2 PSI - 75 Ohms min
5.5 PSI - 44-60 Ohms
30 PSI - 27-41 Ohms
80 PSI - 7-20 Ohms

Others

Standard Motor Products PS171T
* clip-on terminal

Mechanical Oil Pressure Gauge

When fitting a Gauge to the A-series, you should know that the oil pressure switch threads are 1/8 BSPT (british standard pipe tapered). It screws directly into the oil pump housing.

CAUTION: Many gauge kits use Standard threads. Use an adapter fitting.

th_ghgh0038md.jpg th_ghgh0058kc.jpg

If you instead use 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 Oreilly's.

Tee fitted to oil pump [Old Method, no longer recommended]
5917.jpg 230.jpg
Right: this engine has the Tee (and an oil cooler)

New Method
21581.jpg

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

15455.jpg