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quest · 02-25-2013, 05:14 PM

I think if you are applying a power boost to a system that was originally engineered to work without it you may be overpowering it. Do you know if the inside diameter of the hyd lines and wheel cylinders and master cyl are the same on the current truck as the one that the booster came from? Is the booster sized properly for this application? How many inches of vac are being applied compared to the original application? Try a vac line restriction by partially pinching off the line or intentionally creating a vac leak to the booster to reduce vac to it and see how the brakes react. Maybe you need a smaller booster or less vac going to it? Do you have the master that was on the booster in the other truck?

02-25-2013, 05:14 PM	#7
quest Registered User Join Date: Dec 2012 Location: Edmonton Alberta Canada Posts: 51	Re: Yet another brake question... I think if you are applying a power boost to a system that was originally engineered to work without it you may be overpowering it. Do you know if the inside diameter of the hyd lines and wheel cylinders and master cyl are the same on the current truck as the one that the booster came from? Is the booster sized properly for this application? How many inches of vac are being applied compared to the original application? Try a vac line restriction by partially pinching off the line or intentionally creating a vac leak to the booster to reduce vac to it and see how the brakes react. Maybe you need a smaller booster or less vac going to it? Do you have the master that was on the booster in the other truck? __________________ 1965 One Ton GMC 4x4 project Have 3 trucks in my photo album, building them into one custom but original looking 4x4 dually reg cab pickup with 133" wheel base. Last edited by quest; 02-25-2013 at 05:21 PM.