CARB SPRING (BLUE 2.5oz) HS TYPE CARB

 

The lighter weight blue spring was rarely used as standard on HS2 single and twin carbs but the heavier red spring AUC4387 was.

 

Noticeable exceptions to this where they fitted this spring are- Mini Cooper 997/8 1964-69. 

 

ADO16 2 & 4 door twin carb Wolseley and Riley 1300-1300GT early Sprite and Midgets until 1972 when they changed to red.