| [GMCnet] Disc brake conversion [message #278121] |
Thu, 21 May 2015 07:08  |
Neil Fonville
Messages: 68
Registered: May 2014
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I have installed the Manny 4 rear wheel disc brake kit. Did not change the master cylinder or port valve. Pretty sure it has been properly bled but the brakes are horrible. They are far worse than with the drums and not road worthy. The guy helping me thinks it's the master cylinder just too small. I think we still have air in the system somewhere for it to be this bad. I think the right move is to install the PV4 port valve and a larger master cylinder. I thought the only problem with the OEM MC was the reservoir was too small and would need to top off the fluid as the pads wore. Was hoping to use it this weekend but too unsafe now.
I need some input from the brain trust here.
Thanks
Neil Fonville
Allen, TX
75 GMC II
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1975 GMC II
Allen, TX
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