Laycock de Normanville A-Type Overdrive Gasket and Seal 10 Pce Kit RR1518PP

Laycock de Normanville A-Type Overdrive Gasket and Seal Kit   RR1518PP

The Laycock de Normanville A-Type overdrive was the original and most heavy-duty unit produced by Laycock Engineering, introduced in the early 1950s.

Because it was rugged and capable of handling high torque, it was primarily fitted to large-displacement sports cars, luxury saloons, and robust GT cars throughout the 1950s and 1960s.

Items in this package:
* 1 Oil Seal Speedo Pinion - NKC105A - Aftermarket
* 1 Gasket - Adaptor Plate To Overdrive - 502556
* 1 Oil Seal - GHS179
* 2 O Ring - Piston - 513912
* 1 O Ring - Locates on Accumulator - 501910
* 1 O Ring - RTC1949
* 1 Gasket - 132465
* 1 Gasket - Overdrive Side Plate - 500645
* 1 Sealing Washer Fibre 1/2" ID - 500641

The primary vehicles factory-fitted with the Laycock A-Type overdrive include:

Sports & GT Cars

* Triumph TR Range: It was fitted across almost the entire classic TR lineup up until around 1972, including the TR2, TR3, TR3A, TR4, TR4A, TR5, TR250, and early TR6.

* Austin-Healey: Most notably the Austin-Healey 3000 (Big Healey) and earlier 100/6 models.

* Aston Martin: Used on various 1950s post-war models.

* Ferrari: Selected 1950s models utilized Laycock components for grand touring flexibility.

* AC Cars & Bristol: Fitted to low-volume, high-end British sports cars. Luxury & Saloon Cars

* Jaguar: Extensively used on classic saloons and sports cars, including the Jaguar Mark 2, Mk VII, Mk VIII, Mk IX, XK140, and XK150.

* Standard-Triumph Saloons: The Standard Vanguard (which pioneered the design in 1948), the Triumph Renown, and the 6-cylinder Triumph Vitesse and Triumph Herald (certain variants).

* Armstrong Siddeley & Jensen: Found on early luxury cruisers like the Jensen 541.

Quick Identification & Operation

* How to spot it: The A-Type can be distinguished from later units (like the LH or J-Types) because its solenoid is located on the right-hand side of the casting.

* Gear operation: Unlike later safety-restricted units, the heavy-duty A-Type was famous for being operational on 2nd, 3rd, and 4th gears on many Triumph applications, effectively turning a 4-speed gearbox into a 7-speed transmission.