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01spirit750 · 07-19-2018, 10:53 AM

I wonder if you issue is related to the size of the booster. A small diameter booster or single diaphram booster will not provide as mush assist as a larger diameter or dual stage booster. The concern is that adding the vacuum pump may not add much to the power assist that you want.

I had a similar issue running a small diameter booster mounted under the floor. I switched to a hydraulic booster from an astro van and what a difference.

07-19-2018, 10:53 AM	#10
01spirit750 Registered User Join Date: Oct 2010 Location: Bay Area California Posts: 137	Re: Adding Vacuum Pump for brakes I wonder if you issue is related to the size of the booster. A small diameter booster or single diaphram booster will not provide as mush assist as a larger diameter or dual stage booster. The concern is that adding the vacuum pump may not add much to the power assist that you want. I had a similar issue running a small diameter booster mounted under the floor. I switched to a hydraulic booster from an astro van and what a difference.