Master cylinder question

[davek]

1970 charger power drum brakes. Is a 1 inch bore to small? A friend has my service book and I dont know what stock bore is. All I see online for MC is 15/16 and 1 inch. Thanks for any help.

 

[493 Mike]

How does the car stop? Is there an issue?
Mike

 

[pnora]

1970 charger power drum brakes. Is a 1 inch bore to small? A friend has my service book and I dont know what stock bore is. All I see online for MC is 15/16 and 1 inch. Thanks for any help.

FSM Says.

 

[davek]

Yep 1 inch bore for P drums and 1 1/8 bore for P disc

 

[davek]

How does the car stop? Is there an issue?
Mike

Mike Im putting the car back together from when I bought it out of a field.

 

[XS22J8R]

1” bore was stock MC bore for drums in 1970. That was the stock bore size from 67-70 for Mopars with drums, so their engineers thought it adequate for 4 model years.