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kenparker · 12-12-2015, 08:27 AM

I put a set - all four - of AR drums on my 28 pickup about a year ago. They has no markings on them when I started. They were - all four - .010 to .015 under sice and had to be turned to exactly 11" dia on the inside after the hubs were swedged on.

I have installed severl sets of the Mel Gross drums on customers cars and never seen any markings on them indicating diameters. They have all been 11" from Mel (now Randy). After swedgng the hubs on they are returned to get then True Round. Usually .002 to .005 has to be turned go get then perfect after swedging. Never more than .005

I installed a set of hubs on NOS Plasmeter drums last week for my own project,. Again no markings. Hubs swedged on and then turned. The brake turner - not me - had to turn off .020 or more to get then down to 11" inside diameter. He has only turned the front drums so far. The rear drums , unturned - measure 10.080.

12-12-2015, 08:27 AM	#14
kenparker Senior Member Join Date: May 2010 Location: Van, Texas Posts: 1,122	Re: Maximum diameter of cast iron drum? I put a set - all four - of AR drums on my 28 pickup about a year ago. They has no markings on them when I started. They were - all four - .010 to .015 under sice and had to be turned to exactly 11" dia on the inside after the hubs were swedged on. I have installed severl sets of the Mel Gross drums on customers cars and never seen any markings on them indicating diameters. They have all been 11" from Mel (now Randy). After swedgng the hubs on they are returned to get then True Round. Usually .002 to .005 has to be turned go get then perfect after swedging. Never more than .005 I installed a set of hubs on NOS Plasmeter drums last week for my own project,. Again no markings. Hubs swedged on and then turned. The brake turner - not me - had to turn off .020 or more to get then down to 11" inside diameter. He has only turned the front drums so far. The rear drums , unturned - measure 10.080.