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Old 05-01-2015, 06:18 AM   #13
Lugnutz65
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Join Date: Jan 2013
Location: Columbia, SC
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Re: 65 GMC 1/2 ton brake line question

Quote:
Originally Posted by CPO1 View Post
Ok Cool. Thanks for everybody's discussion. No worries Lugnutz65- even I mixed up the dimensions. Agreed 1/4 to the front brakes, 3/16 to the rear.

So.... now that I'm swapping the single master to a dual... do I run 3/16 hardline right from the master for the rear brakes??
I recommend using a piece of 1/4" line and then a reducer. Some people, even me, would install a brake pro portioning valve. If you can connect a 3/16" line to the master cylinder then that seems ok to me. Most folks would just plug the junction block right where the 3/16" line starts to run back and then run a new piece of hard line straight from the master to the 3/16" line. Give the pro portioning valve a thought. I know they are usually just for disc/drum setups but it gives you some adjustability.
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