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| Re: HydroMax MC (Hydroboost) [message #227994 is a reply to message #227937] |
Thu, 31 October 2013 20:14   |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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Larry D, GM Hydroboost had no wiring.
Larry.. Did opening up the rear port help on the powermaster?
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: HydroMax MC (Hydroboost) [message #228033 is a reply to message #227994] |
Fri, 01 November 2013 06:29 |
Larry
Messages: 2875
Registered: January 2004
Location: Menomonie, WI
Karma: 10
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Senior Member |
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| JohnL455 wrote on Thu, 31 October 2013 20:14 |
Larry D, GM Hydroboost had no wiring.
Larry.. Did opening up the rear port help on the powermaster?
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After I added the 3rd axle which now has 15/16" wc's, to the existing 80mm front and 80mm mid axle, when I stepped on the brakes hard, as in an emergency, I could count a 3 second delay before I had brakes. After the 3 sec delay, it had GOOD brakes....but a 3 second delay?? After sleeping on it, I reasoned that there had to be some kind of built in restriction in the system slowing the fluid going to the rear brakes. I pulled the line coming out of the rear port on the MC and found that the port was only .080 dia as measured with a #45 drill. I opened that up as close as I could to the inside diameter of the brake line coming out of the MC without compromising the male flare that mates with the flared fitting on the line. Turns out I opened it to .180. I also then opened the front port to .140. Doing this gave me immediate brakes with NO delay at the pedal. So, yes...it helped a LOT!!
Larry 
78 Royale w/500 Caddy
Menomonie, WI.
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