ghaskett Posted March 24, 2013 Share Posted March 24, 2013 Is there a easy way to upgrade to a dual master cylinder vs the stock single stage unit. Would this be a simple bolt on, or will I be in for major modifications? I had heard that a dual from early Corvettes would work. Thanks,GeorgeUnion, WA Link to comment Share on other sites More sharing options...
Leif Holmberg Posted March 24, 2013 Share Posted March 24, 2013 (edited) The problem is the steering column,if I remember right you can not use a vacuum booster more then 7", that`s becuse of the steering column,then you need a short type of master cylinder.They unit are not "bult on" ,but not very much work to do.Drilling new holes for the 4 booster bolts just outside the old ones,and maybe even shorten the rod that goes to the pedal.You also ned a new T-coupling for the new tube about 15" lengts.If you are trying to use a dual brake booster (a little bit longer than the single) the master cylinder needs to be shorter than if you use a single booster.Measuring is a must before doing anything.The Brake oil canister needs to be moved as well,see picture in my next reply. Leif in Sweden. Edited March 24, 2013 by Leif Holmberg (see edit history) Link to comment Share on other sites More sharing options...
Leif Holmberg Posted March 24, 2013 Share Posted March 24, 2013 This is how it looks with the old booster ,and the new booster and the new 2 circuit master brake cylinder,the car with the new booster also have a new power steering unit from I think 1990s with a better ratio than the old ones.2 first pictures is from the old booster,the 3 last from new the ones. Leif in Sweden. Link to comment Share on other sites More sharing options...
MrEarl Posted March 24, 2013 Share Posted March 24, 2013 (edited) As the information contained within this thread could be of interest here > http://forums.aaca.org/f118/1956-buick-master-cylinder-conversion-347880.html I have copied it to there. You may want to check that tread for additional posts or information. You are welcome to post in either thread. Edited March 24, 2013 by MrEarl (see edit history) Link to comment Share on other sites More sharing options...
Leif Holmberg Posted March 24, 2013 Share Posted March 24, 2013 I have helped this guy with those covertions ,power steering and power brake.To fix the power brake with 2 circuit system is quite easy to do,but how the Shop:s can say "bolt on" about the power steering is a really big lie.We did that convertion with the engine in place and that is nothing to tell people to do if they don`t have a lot of tools and machines.If the engine is out it`s at least ten times easier.But there are lot to fix before it will work and I think the best way is to bay a new pump as well,that will save a lot of problems. Leif in Sweden. Link to comment Share on other sites More sharing options...
ghaskett Posted March 24, 2013 Author Share Posted March 24, 2013 Thanks for the great info. I see what's going on here. I have relatives near Vimmerby, Sweden and next time I'm in your country I will have to see your Buick. Thanks again.George Link to comment Share on other sites More sharing options...
Leif Holmberg Posted March 24, 2013 Share Posted March 24, 2013 You are welcome to visit me, I live about 350 mile noths Vimmerby. Leif in Sweden. Link to comment Share on other sites More sharing options...
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