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Posted by Keith in Washington [76.104.177.226] on Friday, February 05, 2010 at 12:43:38 :
In Reply to: Dual reservoir master cylinder posted by junior [64.136.26.235] on Friday, February 05, 2010 at 12:16:26 :
No. There is not a bolt on conversion. The later WMs had a dual master cylinder mounted under the drivers floor. Those units are hard to find.
Most people use Ray's firewall mounted hanging peddles and have been happy with them.
Ray also made a under the floor brake master cylinder system. I have that one. I am very happy with it and it is well made and is massive and your brake system is well protected when you are off road.
Some people have mounted a dual master to the original mastercylinder mount. I have yet to see one that I would be happy with. In my opinion they are not well engineered and do not appear to have suffieient strength. The original master cylinder mount is strong enough it is how the now dual master is bolted up that I question. If a well designed adaptor was available I would possibly change my mind. An additional issue with this method is that there is very little room between the brake master and the steering box, You are very space limited especially if you want to add power assist to your brakes.
I would add power assist to your brake system if you going to change it. I strongly suggest a hydroboost system. The resulting brakes are really fantastic. You can get the hydroboost through NAPA and a few other parts at your GM dealer. The hydroboots system is far superior to a vacuum based syste. You will have to install a power steering pump to drive the hydroboost.
I have converted both of my trucks to dual master with power assist. Both were vacuum boost to begin with and the Carryall is now a hydroboost system. The other truck will be converted soon. I will do it when I put in Ray's disk brakes and ARB locker in the front axle. I seem to have found a way to run the 12V ARB locker pump in the 6V ff PW so the jast technical issuw is gone.
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