Greg F Posted January 5, 2014 Report Posted January 5, 2014 Scanning EBAY and found this supposed master cylinder for 40-48 Dodge/Plymouth. Anyone try this? http://www.ebay.com/itm/Firewall-Brake-Pedal-Booster-MC-1940-48-Dodge-Plymouth-/380788914749?pt=Vintage_Car_Truck_Parts_Accessories&hash=item58a8c9ba3d&vxp=mtr Greg Quote
55 Fargo Posted January 5, 2014 Report Posted January 5, 2014 looks like a universal unit, for those hotrodding I suppose, a few have done similar under the floor using there stock brake pedal. Most on this forum find the stock MC adequate if in good condition... Quote
Don Coatney Posted January 5, 2014 Report Posted January 5, 2014 If one elects to modify the firewall and convert to swing pedals there are many options for a dual chamber master cylinder. The one you posted is not a direct replacement for an under floor master cylinder. Quote
Greg F Posted January 5, 2014 Author Report Posted January 5, 2014 That's what I thought. Would be nice to have easier access to the MC. Have to do some "bleedin" tomorrow as brakes are not as firm as I'd like. Always appreciate the info...G Quote
55 Fargo Posted January 5, 2014 Report Posted January 5, 2014 (edited) That's what I thought. Would be nice to have easier access to the MC. Have to do some "bleedin" tomorrow as brakes are not as firm as I'd like. Always appreciate the info...G If you have any air bleed brakes, gets things right. Your brakes, Mopar Lockheed also need to be adjusted to very close tolerances to be effective and for even brake shoe wear. On my 47 Chrysler I used to own, I followed Dodgeb4ya advice, and set the major adjusters as specified in service manual, and let brand new shoes wear in for a few thousand miles, with periodic minor adjustments. They were great, wore evenly. I sold this car to a vintage Mopar collector, he said they were the best most responsive old Mopar brakes He had ever had. When the shoes are new, they are not always concentric to the freshly machined drums, thus in the old days, they would grind off some of the material on the brake shoes with a special brake arcing machine, thus instant great it and brakes. Or you allow brakes to wear in for a while. Of course there is a special Ammco and Miller tool, that can dial in the adjustment very closely, I have a homemade device that does something similar, adjusting these brakes can sometimes be impossible without such a device.....good luck Edited January 5, 2014 by Fargos-Go-Far Quote
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