Automatic transmission Jatco 3N71B
Content
Technical characteristics of the Jatko 3N3B 71-speed automatic transmission, reliability, resource, reviews, problems and gear ratios.
The Jatko 3N3B 71-speed automatic transmission has been in production since 1968 and is one of the very first Japanese hydromechanical transmissions in industrial history. This gearbox was installed on rear-wheel drive Nissan and Mazda models until 2010.
There are no other three-speed automatic transmissions in the lineup.
Specifications Jatco 3N71B
| A type | hydraulic machine |
| Number of gears | 3 |
| For drive | rear / full |
| Engine capacity | up to 3.0 liters |
| Torque | up to 250 Nm |
| What kind of oil to pour | DEXRON III |
| Grease volume | 5.5 l |
| Change of oil | every 50 km |
| Filter replacement | every 50 km |
| Approximate resource | 250 000 km |
Gear ratios, automatic transmission 3N71B
On the example of a 7 Mazda RX-1979 with a 1.1 liter engine:
| Home | 1-I | 2-I | 3-I | Rear |
|---|---|---|---|---|
| 3.909 | 2.458 | 1.458 | 1.000 | 2.182 |
Which cars were equipped with the 3N71B box
| Laurel C30 | 1968 – 1972 |
| Laurel C130 | 1972 – 1977 |
| Sylvia S10 | 1975 – 1979 |
| Sylvia S110 | 1979 – 1983 |
| Hardbody D21 | 1985 – 2008 |
| Maxima G910 | 1980 – 1982 |
| RX-7 FB | 1978 – 1985 |
| RX-7 FC | 1985 – 1992 |
| CB 626 | 1978 – 1982 |
| 626 GC | 1982 – 1987 |
| Pickup PE | 1977 – 1985 |
| Pickup UF | 1985 – 1998 |
Disadvantages, breakdowns and problems of Jatko 3N71B
The simple design of this transmission facilitates self-repair
If you change the oil regularly, you can easily drive up to 250 km without repair
With frequent and intense overclocking, the resource of the box drops at least twice
It is strictly forbidden to engage the Drive gear when the car is rolling backwards
