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scrappie · 11-17-2007, 05:45 AM

I recently replaced the master cylinder on my 71 cutlass conv. The car has power drum brakes all around. The master cylinder that I took off had two equal size reserviors and was reletively small. The master cylinder I replaced it with was a little bigger and the front reservior was bigger than the rear.
My brakes work but they don't perform like I would like them to. I don't know if it just the nature of drum brakes because I have never owned a car with drum brakes front and rear or maybe the new master cylinder is not right?
I told the autopart person that the new and old did not match visibly but he said as long as the bore on the rear of the master was the same then it will work. Is that true? I think the new master is for a car with front disc and rear drum judging by the different size reserviors. Is this safe?

11-17-2007, 05:45 AM	#1 (permalink)
scrappie Member Join Date: Mar 2007 Posts: 45	master cylinder I recently replaced the master cylinder on my 71 cutlass conv. The car has power drum brakes all around. The master cylinder that I took off had two equal size reserviors and was reletively small. The master cylinder I replaced it with was a little bigger and the front reservior was bigger than the rear. My brakes work but they don't perform like I would like them to. I don't know if it just the nature of drum brakes because I have never owned a car with drum brakes front and rear or maybe the new master cylinder is not right? I told the autopart person that the new and old did not match visibly but he said as long as the bore on the rear of the master was the same then it will work. Is that true? I think the new master is for a car with front disc and rear drum judging by the different size reserviors. Is this safe?