1970-1974 Toyota Corolla II 2-door sedan (E20) SL 1400 (86 Hp) Automatic

The Toyota Corolla II 2-door sedan, designated the E20 series, represented a significant step forward for Toyota in the compact car market. Produced between 1970 and 1974, it offered a more modern and stylish alternative to the original Corolla. The SL 1400 variant, equipped with an 86 horsepower engine and an automatic transmission, occupied an interesting position within the E20 lineup, aiming for a balance between affordability and convenience. This model was intended to appeal to buyers seeking a comfortable and easy-to-drive vehicle, particularly in urban environments.

The 1.4L SL 1400 Automatic: Positioning and Overview

The SL 1400 Automatic trim was positioned as a mid-range offering within the E20 Corolla II range. While the base models featured smaller engines and manual transmissions, and higher-spec versions offered more powerful engines, the SL 1400 aimed for a sweet spot. It provided a larger engine than the entry-level options, coupled with the convenience of an automatic gearbox, making it attractive to families and drivers prioritizing ease of use over outright performance. Compared to the more spartan base models, the SL 1400 typically included additional comfort and convenience features, though it remained relatively simple by modern standards.

Powertrain & Engine Architecture

At the heart of the SL 1400 was the Toyota T engine, a 1.4-liter (1407 cc) inline-four cylinder gasoline engine. This engine, designated with the engine code ‘T’, produced 86 horsepower at 6000 rpm and 115 Nm (84.82 lb-ft) of torque at 3800 rpm. The engine featured a relatively simple design, with a two-valve per cylinder configuration and a compression ratio of 8.5:1. Fuel delivery was managed by a carburetor, a common feature for vehicles of this era. The engine was mounted longitudinally in the front of the vehicle.

The automatic transmission was a 3-speed unit. While specific details regarding the transmission’s internal construction are scarce, it was a conventional hydraulic automatic, offering smooth, if not particularly rapid, gear changes. The transmission was chosen to provide a comfortable driving experience, particularly in city traffic, and to broaden the Corolla II’s appeal to a wider range of drivers. The gear ratios were optimized for fuel efficiency and everyday drivability rather than outright acceleration.

Driving Characteristics

The driving experience in the SL 1400 Automatic was characterized by smooth, predictable performance. The 86 horsepower engine, while not exceptionally powerful, provided adequate acceleration for typical driving conditions. The automatic transmission contributed to a relaxed driving style, eliminating the need for constant gear changes. However, compared to the manual transmission versions of the Corolla II, the automatic variant felt noticeably slower, particularly during overtaking maneuvers. The weight-to-power ratio of 9.6 kg/hp reflected this, indicating a less sporty driving experience. The rear-wheel-drive configuration provided a balanced feel, but the relatively soft suspension setup prioritized ride comfort over sharp handling.

Equipment & Trim Levels

The SL 1400 Automatic trim level typically included features such as cloth upholstery, a basic instrument cluster, and standard exterior trim. While not lavishly equipped, it offered a step up from the more basic Corolla II models. Optional extras could include a radio, upgraded interior trim, and potentially a sunroof, depending on the market. The interior design was functional and straightforward, prioritizing practicality over aesthetics. The dashboard layout was simple, with clearly labeled controls for essential functions.

Chassis & Braking

The Corolla II E20 utilized a body-on-frame construction, common for vehicles of its time. The front suspension consisted of independent coil springs with a transverse stabilizer bar, providing a reasonable level of ride comfort. The rear suspension employed a rigid axle setup with leaf springs, a more cost-effective and durable design. Braking duties were handled by disc brakes at the front and drum brakes at the rear. The steering system was a cone worm type with recirculation balls, offering a relatively direct steering feel, though it required more effort than modern power steering systems. The relatively light curb weight of 825 kg (1818.81 lbs) helped to mitigate the limitations of the braking system.

Market Reception & Comparison

The Toyota Corolla II, and specifically the SL 1400 Automatic variant, was generally well-received by automotive critics and consumers alike. It was praised for its reliability, fuel efficiency (5.4 l/100 km or 43.6 US mpg), and comfortable ride. However, some critics noted the lack of outright performance compared to competitors and the relatively basic interior appointments. Compared to other trims in the Corolla II lineup, the SL 1400 Automatic offered a compelling balance of features and price. The manual transmission versions provided better fuel economy and acceleration, while higher-spec models offered more luxurious features. The SL 1400 Automatic appealed to buyers who prioritized convenience and ease of use over sporty driving dynamics.

Technical Specifications

Legacy

The Toyota Corolla II SL 1400 Automatic, while not a particularly rare or collectible vehicle today, holds a significant place in Toyota’s history. The powertrain proved to be remarkably durable, and many examples remain on the road today, a testament to Toyota’s engineering prowess. In the used car market, these vehicles are often sought after by enthusiasts and collectors looking for a classic Japanese automobile. While maintenance can be challenging due to the age of the vehicle and the scarcity of parts, the SL 1400 Automatic remains a charming and reliable example of 1970s automotive design. Its simple construction and readily available service information make it a relatively accessible classic for those willing to invest the time and effort.