Hi back again !!
I have an early BN1 which I think is supposed to have the larger 1 inch bore brake cylinders. On the later models they changed the cylider to a smaller 7/8 size.
Having checked on my car the drivers side has 2 smaller 7/8 inch cylinders and on the passneger side and have one larger 1 inch and 1 small 7/8 inch on the drivers side !
Does anyone know why they changed the size and whether I should get 3 new 1 inch cylinders to get back to original or simply replace the single 1 inch with a new 7/8 inch.
Presummably with the larger bore the brake pressure will be similar but maybe acting over a larger area of the base of the shoe and certainly requiring a greater swept voume of brake fluid.
I have had problems with the brakes jamming on when the brakes warms up but I suspect that may be due to insufficient slack between the brake pedal and master cylinder so the return hole is still partially blocked.
There seems to be slack in the pedal when cold but not when hot weird eh ?
Any help as always greater appreciated
Ian
I have an early BN1 which I think is supposed to have the larger 1 inch bore brake cylinders. On the later models they changed the cylider to a smaller 7/8 size.
Having checked on my car the drivers side has 2 smaller 7/8 inch cylinders and on the passneger side and have one larger 1 inch and 1 small 7/8 inch on the drivers side !
Does anyone know why they changed the size and whether I should get 3 new 1 inch cylinders to get back to original or simply replace the single 1 inch with a new 7/8 inch.
Presummably with the larger bore the brake pressure will be similar but maybe acting over a larger area of the base of the shoe and certainly requiring a greater swept voume of brake fluid.
I have had problems with the brakes jamming on when the brakes warms up but I suspect that may be due to insufficient slack between the brake pedal and master cylinder so the return hole is still partially blocked.
There seems to be slack in the pedal when cold but not when hot weird eh ?
Any help as always greater appreciated
Ian