65_wcat Posted May 30, 2004 Share Posted May 30, 2004 I'm hoping someone out there has already done this:I'd like to convert my single master cylinder(Delco Moraine)to a dual. What is involved in making such a conversion?I believe the first year to use the dual master system was 1967. Can I use the master from that year? I think they used a Bendix unit. Do I have to change the power booser as well?Thanks.Greg Link to comment Share on other sites More sharing options...
buickguy1968 Posted June 19, 2004 Share Posted June 19, 2004 simple- i've done about 9 of theses conversions.use a 67-69 master- you must use a bendix masteryou do NOT have to change the booster.you MUST use a proportioning vale from a 67-69 drum-drum full size, or a 67-69skylark- the conversion will NOT work if you dont put in this valveif you have questions, email me buickguyjon1@sbcglobal.net Link to comment Share on other sites More sharing options...
riv2x4 Posted June 19, 2004 Share Posted June 19, 2004 You definitely do not use a proportioning valve but a distribution block. Proportioning valve are only if you have front disk brakes. I have a spare 67 distribution block you can have for $20.Larry Link to comment Share on other sites More sharing options...
65_wcat Posted June 19, 2004 Author Share Posted June 19, 2004 Thanks to both of you for the reply.Larry,I was surprised to see that I needed a proportioning valve too. Seemed odd for drum brakes.I would be interested in the distribution block. If you don't mind, please e-mail me with your address (gjh6801@cs.com) and I'll send the money.Also, any other pitfalls I should be aware of when I start the conversion?Thanks again!Greg Link to comment Share on other sites More sharing options...
buickguy1968 Posted June 22, 2004 Share Posted June 22, 2004 guys- dual master brake systems DO use a proportioning valve- the proportion the brakes 70/30 front/rear- they are not the same as a distribution block- those do not have a valve to keep one set of brakes working if you loose one side. They dont work the same as disc/drum, but they are proportioning- most of your pedal feel comes from the rear brakes, so they must be. hope this helps Link to comment Share on other sites More sharing options...
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