Quote Originally Posted by davids2toys View Post
Don't you mean stay away from the silicone? Synthetic is what we do want I believe.
Just getting to this job now!!! I put a new slave in last week and ordered a new Girling clutch MC tonight from pegusus racing. It is 3/4 bore.
My car has a 3/4 bore MC for the front brakes and a 5/8 bore MC for the rear, I think they are backwards, shouldn't the 5/8 bore go to the front to make more pressure???
No.
The pressure is not effected by bore size only the volume move by effort(pedal resistance) and stroke(pedal movement)

Does your pedal assemble have an adjustable brake bias bar? Maybe this was done to set the brake bias.
Smaller bore M/C for the rear means less volume to the rear brakes with the same amount of pedal movement.