User Login    
 + Register
  • Main navigation
Login
Username:

Password:


Lost Password?

Register now!
Fast Search
Slow Search
Google Ad


[Datsun 1200 encyclopedia]

Air conditioning

Revision as of 11:19, 7 August 2020; view current revision
<-Older revision | Newer revision->

Datsun 1200 encyclopedia | Recent changes | Edit this page | Page history | Switch to MediaWiki mode

Printable version | Disclaimers | Privacy policy | Current revision
Category: Heating And Ventilation Systems

Datsun 1200, unlike the Datsun 1000, was designed with air conditioning in mind. However, it was still a dealer-installed add-on option and so varied by country and region. In April 1978 it became a factory option for Japanese market Sunny Truck.

15622.jpg

Contents

Parts Needed

Buy Universal Air Conditioning kits - $500 on eBay. $1300 from Summit. Contain compressor and everything needed except engine mounting brackets and V-belt.

23101.jpgAlbum 23101 B110ac.jpg

  • Pump (Compressor) & mounting bracket
  • Double crankshaft pulley & V-belt
  • Condensor (radiator-like unit)
  • Filter dryer/receiver
  • Evaporator (under-dash unit)
  • Hoses
  • Wiring

double-belt Crankshaft Pulley
20080.jpgAlbum 20080

Since B110 A/C is fairly rare, you can source most of the parts from a B210 or B310. Only the interior vent setup is needed specific to the 1200.

13934.jpgAlbum 13934

9378.jpgAlbum 9378 15371.jpgAlbum 15371

Installation

  1. Install all the parts, except leave the dryer/receiver plug and unplumbed
  2. Drive to the aircon service shop
  3. They will evacuate the system (vacuum pump), charge with R-134a and appropriate oil

Compressor

The compressor pump bolts to the engine and is driven by a v-belt. A double-groove Crankshaft Pulley is fitted.

  • Early (to 1979): York-type compressor uses aluminum case. Commonly used from 1958-1980, they last a long time and are generally interchangeable between different car makes. When replacing, unbolt your clutch unit and bolt it to the new compressor.
  • Late (from 1980): Compact swash-type (radial) compressor

York-type | Radial
21309.jpgAlbum click to view 21308.jpgAlbum 21308

27630-G1660 COMPRESSOR-COOLER DKKC
27630-W7002 COMPRESSOR-COOLER DKKC [B421]
* JDM Datsun B120 8110-8910
* JDM Datsun 720 L18 7909-8105
92610-G1900 COMPRESSOR-COOLER DKKC [B421]
* B120 8910-
11910-G1661 BRACKET-COMPRESSOR 7804-7907
* 11911-G1661 BRACKET-COMPRESSOR [2nd piece]
11929-H1000 BELT-COMPRESSOR L-810 7804-7807 
11910-G1615 BRACKET-COMPRESSOR 7908-8910
11910-95W00 BRACKET-COMPRESSOR 8910-
11929-G1615 BELT-COMPRESSOR L-814 7808-
11925-A0100 PULLEY ASSY-IDLER,COMPRESSOR 7804-7807
11925-G1615 PULLEY ASSY-IDLER,COMPRESSOR 7808-
11917-M0100 BOLT-ADJUST 7804-7907
* 11933-A0100 NUT 7804-7907

New compressors are available driven by built-in electric motor rather than the vehicle engine belts. All you need is a high output alternator to power it, no need to track down engine mounting brackets and pulleys from ripoff merchants only to find you have the wrong components. The new unit is more efficient than the clapped out old 50 year old units. You also have the option to mount the unit in a remote location to keep a clean engine bay. Units range in price between around $1000-2500AUD.

Engine Brackets

Various types of brackets were used over the years to fix the compressor to the engine. Early A12 and late A12 brackets differ.

See Main Article: Compressor brackets

You can make your own brackets, buy used from a B110/B210/B310 or Cherry/Pulsar, or buy new.

23103.jpg 21821.jpg

Evaporator

RHD factory Nissan
15193.jpgAlbum 15193

Seen in USA
15372.jpgAlbum 15372

LHD kit by Vintage Air 672001-VHY $309 at Summit
vta-672001vhy_sn_xl.jpg

Australia aftermarket
5060.jpgAlbum 5060

Left-hand Drive

Ecuador

20065.jpgAlbum 20065

Taiwan

1285249278413329.jpg

USA

1972 Brochure
24798.jpgAlbum 24798 24799.jpgAlbum 24799 24800.jpgAlbum 24800

The air condition for Datsun cars is made by Frigiking. It's the only system approved by the Datsun factory.
Except that the Factory used a different brand. Frigiking was only used in USA.

USA Type 1

15622.jpgAlbum 15622

16243.jpgAlbum 16243 16244.jpgAlbum 16244 14556.jpgAlbum 14556 14557.jpgAlbum 14557\

acdash.jpg

Specifications

Frigiking dealer-installed package. Larger capacity than 240Z, but less than 510 or 521 pickup
24400.jpgAlbum 24400

PERFORMANCE
Capacity: 12,500 BTU/hour
Airflow: 180 CFM
Evaporator Coil: 3/8 x .016 cu tubes, 4 rows
 staggered pattern, 12" x 5" x 2-1/2"
 fin series 120 flat aluminum
Expansion Valve: 1-1/2 ton
ELECTRICAL
Fan Switch: Reostat
Thermostat: Ranco type A-30
 Cold cut-out: 28°F ±2°
 Cold cut-in: 36°F ±2°
 Warm cut-out: 58°F ±4°
Fan Motor: Double shaft, single speed, 4600 RPM @ 13.5 V
 11.5 amps maximum current draw
Clutch: Pitts 6" double groove 12V 4.0 amp
Wiring: SAE specification J558a
Overload Protection: Inline fuse 30 amps
COMPRESSOR: York 206 (6 cubic inches)
CONDENSOR: 3/8 x .016 cu. tube, 2 row inline pattern
 13 x 12 x 1-1/2 fin seris 10 fins/inch
GENERAL KIT COMPONENTS: All meet SAE specifications
COMPRESSOR MOUNT KIT
Brackets are 1/4" hot rolled steel, arc welded and painted
Drive Pulley material: ASTMA-159, Class G3000, grey cast iron
 precision machined, balanced and painted
Idler Pulley: Cast iron, fully machined with single-row sealed ball bearing
Attaching Hardware: Grade 5, black, rust resistant
Compressor Drive Belt: Standard automotive quality, 500 section
EVAPORATOR SECTION
Material: High-strength injection-molded plastic case
Knobs: injection-molded plastic

USA Type 2

7450.jpgAlbum 7450

USA Type Frigette

Frigette Brand. Aftermarket kits still sold at JC Whitney!

2187.jpgAlbum 2187

Optional Fan

Nissan option flex-fan (dealer item)
3053.jpgAlbum 3053

USA catalog
* 21060-H1001 FAN-COOLING A12 (standard B110 fan)
* 21060-A4605, 21060-N0100 FAN-COOLING D=330 FOR TROPICAL USA
  330 mm diameter

Sunny Truck Kit

Starting 1978 April a factory cooler kit was offered with upright compressor and standard interior unit. It is a very nicely designed unit, however the interior cooler protrudes into the passenger legroom and precludes using a package tray.

See Main Article: 1979 aircon

20078.jpgAlbum 20078
This kit is beautiful and easy to install. Unfortunately the interior cooler unit is bulky and protrudes farther into the passenger legroom than other types.

20087.jpgAlbum 20087

Retail Kit

Acqua Garage sells a R-134a kit, 2015 price was 300000 Yen (about $3000 USD).

  • 1 hanging unit Unicla IMPERIAL III with 5/16 - 5/8 O-ring
  • 2 AC compressor UP-90 = U02/A / A charging valves (no)
  • 3 12 x 12 Condensor plust reducer joints
  • 4 receivers & receiver BK
  • 5 electric fan unicla 8 inch PUSH & banding
  • 6 General purpose relay 2 pc
  • 7 a. Special design compressor fixing bracket.
  • 8 AC for stock taking crank pulley
  • 9 cooling fan & spacers
  • 10 hose

Unicla hanging unit 12V R134a right hand drive AG ALL-BLACK specifications (genuine Unicla, not a "Star Road" made in China knockoff)
GB122-270813-1-2.jpg

O-rings made in Japan products composition 5/16-5/8 UNIF wiring fuse + universal mounting bracket included

AG special compressor UP 90 + U02 < gas valve protection > 12 V R134a O-rings
A/A clutch parts w/< front thickness and > pressure valve with 1/2 - 5/8 UNIF
UP90-U02-270424-5-21.jpg
comes with compressor fixing bracket for the A-series block

Condensor 12 inch×12 inch T22mm O-rings
12inch-1-3.jpg

Fitting F3/8-O5/16 reducer + F1/2-> O1/2 < reducer
O-O-4-4.jpg

Receiver-dryer and liquid tank < filter > PSW with O ring 5/16S-5/16S | bracket
PSW5-16-3-2.jpg Receiver-BK2-2.jpg

Unicla electric pusher fan 8-inch | tie-locks
unicla-8inch7-4.jpg umkit4_4.jpg

Relay
12V-Relay1-1.jpg

Crank pulley with extra groove for AC compressor drive belt
CP-GB122-270919-2-2.jpg

Hoses similar to this, made of varying quality components
SunnyTrack-hose4-2.jpg

OPTION 25000 Yen - 6-blade cooling fan
GB122-CFAN270827-8-2.jpg

OPTION 58000 Yen - genuine brass radiator, fit original fan shroud (not included)
OPTION 13000 Yen - fan shroud
SUUNY270915-3-2.jpg

Front-distributor A12

Japan setup for front-distributor A12
21644.jpgAlbum 21644 21645.jpgAlbum 21645 21646.jpgAlbum 21646

1977

Non-factory Unicla 311609 from 1977 Sunny Truck H-B120

Unicla imperial-III under-dash unit
unicla-1.jpg unicla-2.jpg unicla-3.jpg unicla-4.jpg unicla-5.jpg unicla-6.jpg unicla-7.jpg unicla-8.jpg

Unusual compressor mount
25585.jpgAlbum 25585 25586.jpgAlbum 25586

idler pulley
pulley-1.jpg pulley-2.jpg

Unicla DA-299 compressor
unicla_DA-299-1.jpg unicla_DA-299-2.jpg unicla_DA-299-3.jpg unicla_DA-299-4.jpg

Unusual 6-blade fan
25587.jpg 25588.jpg

Idle Speed Control

In 1989 they added the FICD (Fast Idle Control Device) to raise idle speed about 100 RPMs when the compressor runs.

See Main Article: FICD

Legroom

Since the cooler unit takes up some of the passenger legroom, what to do? One enterprising 1200 fan mounted the cooler unit in the dash:

18256.jpgAlbum 18256 18767.jpgAlbum 18767

Of course the downside is there is no glove box.

Photo Index

Click any thumbnail to see it full size in our Club Photo Album. Read details or post a comment!

2185.jpg 2187.jpg 2199.jpg 2209.jpg 2210.jpg 2341.jpg 2495.jpg 3053.jpg 3811.jpg 4163.jpg 4164.jpg 4305.jpg 5060.jpg 5063.jpg 7777.jpg 9377.jpg 9378.jpg 11444.jpg 12038.jpg 13181.jpg 13934.jpg 14556.jpg 14557.jpg 14950.jpg 14953.jpg 15192.jpg 15193.jpg 15194.jpg 15622.jpg 16243.jpg f16244.jpg 17263.jpg 17654.jpg 17655.jpg 18256.jpg 18710.jpg 18767.jpg 21300.jpg 21301.jpg 21302.jpg 21303.jpg 21304.jpg 21305.jpg 21306.jpg 21307.jpg 21308.jpg 21309.jpg
 
¤