Heads up to those that install a 2 bolt aluminum master cylinder.
Today I lined up all the master cylinders that I have gathered....
Out of view is an aluminum 15/16" unit and the aluminum 1 1/8" MC on my car.
Three are cast iron 4 bolt units. One at 1" and two of them 15/16".....They all had 9/16" front ports, 1/2" rear ports and when bench bled, pushed fluid equally in time front and rear.
Two of the aluminum units were 1.03" and had 9/16" front, 1/2" rear ports and pushed fluid equally.
One aluminum one was 15/16" and had weird 3/8" ports. The front reservoir was longer but the whole reservoir was sloped. See picture below:
It pushed fluid to the front first.
The final two MCs are the ones I've been working with lately. Both 15/16" and 1 1/8" units have identical ports and push fluid to the front reservoir first.
Today I lined up all the master cylinders that I have gathered....
Out of view is an aluminum 15/16" unit and the aluminum 1 1/8" MC on my car.
Three are cast iron 4 bolt units. One at 1" and two of them 15/16".....They all had 9/16" front ports, 1/2" rear ports and when bench bled, pushed fluid equally in time front and rear.
Two of the aluminum units were 1.03" and had 9/16" front, 1/2" rear ports and pushed fluid equally.
One aluminum one was 15/16" and had weird 3/8" ports. The front reservoir was longer but the whole reservoir was sloped. See picture below:
It pushed fluid to the front first.
The final two MCs are the ones I've been working with lately. Both 15/16" and 1 1/8" units have identical ports and push fluid to the front reservoir first.