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Current revision

Nissan calls the housing for the thermostat the "Water Outlet".

1 Overview
2 A-engine Variations
3 Head Mating Surface
4 Housing Part Numbers
5 Photo Index

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Overview

B110
11062-18000 GASKET-WATER OUTLET
11060-G0300 OUTLET-WATER
11060-H7000 OUTLET-WATER USA MANUAL from 0373

G03 | H70
Album 21294

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A-engine Variations

There are a number of different types of water outlets for A-series engines.
Album 19554

Gasket Types (2-bolt, 3-bolt, 4-bolt)

45-degree outlet | 90-degree outlet

3-bolt and 4-bolt types have accessory bolt bosses
Album 25735

* 2-bolt Type -- as used by early engines, and some late engines
* 3-bolt Type -- newer engines, with extra mounting bosses
* 4-bolt Type -- newer engines, notably those with Air Passage

4-bolt Type | Air Passage (red arrow)
Album 15172 Album 25820

A most important difference is whether it fits over the Air Passage in some cylinders heads.

It further breaks down:

* 2-bolt Type -- as used by Datsun 1200
  * B10/B110 Type, outlet points 180 degrees
  * Late B110 USA -- with boss for thermo switch
  * B210/B310 Type-Outlet points 225 degrees 
* 3-bolt Type
  * with accessory mounting bosses
* 4-bolt Type -- as used by some newer engines
  * with accessory mounting bosses and Air fitting
  * with accessory mounting bosses (forward) and Air fitting

Album 15159

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Head Mating Surface

Starting with the 1973/974 A Engine Redesign, all A-series cylinder heads featured an alternator placed on the right side of engine. This in turn necessitated adding a bolt hole to the front face of the head next to the water outlet (the hole is for the alternator mounting tension bracket).

Album 3265

This means the water outlet was rotated up so as to not cover the bolt. This in turn means the radiator hose location is different, even though the first year B210 radiator is otherwise nearly identical to the B110.

1974-up engine w/bolt hole | 1966-1973 w/o alternator bolt hole
Album 23099 Album 23096

Head Mating Surface: 1974-up engine with Air passage | Adapter covers a hole, allowing old-style housing
Album 15160 Album 23098

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Housing Part Numbers

NOTES:

CAL = California
CAN = Canada
FED = USA, except California
GFU = 5-speed Round-port A14 engine
JDM = Japan Domestic Market
Gasket is also called "WASHER-JOINT WATER OUTLET"

The 4-bolt gasket works on a 2-bolt housing.

[edit]

2-bolt Type

The 2-bolt type is used by B10 and B110. It is also used by B210/B310 engines that do not have an Air Injection passage in the cylinder head.

11062-18000 GASKET-WATER OUTLET

2-bolt Type Thermostat housings attaches radiator hose at:

* B110: 9:00 o'clock (180 degrees)
  Album 7766
* B10/B210/B310: 10:30 o'clock (225 degrees) to clear belt 
  of high-mounted alternator
  Album 8091

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7:30 Outlet

It points straight to the side when installed.

11060-G0300 OUTLET-WATER B110
* also used on JDM C20 "Sunny Cab" with A10 engine

B110 housing and original fittings
Album 15170

Aftermarket
KILKENNY CASTINGS WO27
* suits 11060-G0300

WO27 (not WO27A)
KILKENNY CASTINGS WO27A (QWO27, MPO27 etc)
Album 27111 Album 27110 Album 27109

#11060-H7000 OUTLET-WATER B110 MANUAL from 0373 USA

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9:00 Outlet

B10 & B210 - outlet points slightly up when installed

11060-18000 OUTLET-WATER B10

11062-H7201 GASKET-WATER OUTLET
* 11060-H5000 OUTLET-WATER B210 A13 USA 1974, A12 JDM early
* 11060-H5000 OUTLET-WATER B310 A12,A13,A14,A15 JDM 8011-
* 11060-H5000 OUTLET-WATER B120 A12 -8910
* 11060-H5000 OUTLET-WATER B310 A12A CAL from 0879
* 11060-H5000 B310 JDM
  -8109 VAN
  7901-8010 A12S.S,K+14.V
  8011- ALL

KILKENNY CASTINGS WO27A

You can see how on newer engines, the alternator bracket bolts next to the outlet. This requires the outlet at 45 degrees up so the bolt is uncovered.
Album 3265

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Late B120

11060-G2500 OUTLET-WATER B120 A12 8910-
* 11062-H7201 GASKET-WATER OUTLET -9202
* 11062-18000 GASKET-WATER OUTLET 9202-

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11060-H7000

Late 1973 USA has a threaded boss for a water temperature switch.

Album 21294

11060-H7000 OUTLET-WATER B110 USA MANUAL from 0373
* Has boss for temp switch
* 22120-U2001 ASSY-SWITCH WATER TEMP from 0373
  same switch used by:
  * L16-powered 620 USA for EGR
  * 1973 510

Everco part number W2499 similar but is heavy cast iron (all factory housing are light alloy, so this is incorrect material)
Everhot%20Everco%20W2499.jpg Everhot%20Everco%20W2499%202.jpg

The purpose of the late 1973 water temp switch is unknown, but it might replace the ambient air temp switch of the TCVAS system. In other Datsun models it was used to disable EGR, including PB110 L14 engine (in thermostat housing) and EGI A14E engine (in EGR adapter on intake manifold). On the 1974 L18-powered 620, it was activated at 120 degrees, so it is the wrong temp to be used to control a radiator fan.

Album 15164

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FWD

11060-M0100 E10 Cherry 2-bolt with accessories boss A10,A12

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3-bolt Type

11062-M3001 GASKET-WATER OUTLET
* can use 4-bolt gasket

Album 27112

The 3-bolt water outlet was used in newer engines that do not have an air port in the front of the cylinder head -- and that do not have the alternator bracket bolted to the front of the head. In this case, the outlet can exit more to the side, even covering the high bolt hole.

5-bolt Head Face, adds right-side low Alternator Mounting
Album 23095

Album 15171

11060-M3001 OUTLET-WATER
* B310 JDM -7812 A12 S,K; A14 V
* B310 FED A14,A15
* B310 AUS A14 Wagon
11060-M3010
* N10 JDM A12,A14
Aftermarket:
KILKENNY CASTINGS WO92 (THO-60, QTH etc)

3-bolt type fastening housing to head. With two accessories bosses pointing up
Album 25735

Album 6509 Album 6510 Album 6511 Album 3464 Album 80

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4-bolt Type

11062-H7201 GASKET-WATER OUTLET

All engines with Air passage in the cylinder head require a 4-bolt housing and gasket. Some newer engines without Air system also use the 4-bolt kit.

4-bolt
Album 15161

Smog Pump Type - bosses up
Album 6226

11060-H7201 OUTLET-WATER B210 A14 USA
11060-H7400 OUTLET-WATER 
* B210 A14 FED GFU from 1276
* B210 A12 JDM late, A14 
* F10 A14 USA
* A10 JDM A14S.S,K -7803

H74 1977 B210 Coupe A14 5-speed GFU

Air Induction Type - 1 Boss Forward, 1 boss up
Album 6357 Album 25953

11060-H9100 OUTLET-WATER B310 A14,A15 CAL,CAN
* 11062-H7201 GASKET-WATER OUTLET  B310 A14,A15 CAL,CAN
11060-H9100 OUTLET-WATER B310 A12A from 1278
* 11062-H7201 GASKET-WATER OUTLET A12A CAN from 1278
* 11062-M3001 GASKET-WATER OUTLET A12A FED from 0879

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