You can "low temperature braze" it. You are very handy and I believe you can do it at home. You will need to make a threaded bung to fit in where the tactic piece came out. You can get the aluminum brazing rods at home depot, menards, any welding shop, even harbor freight has it. It is incredibly strong. It flows like solder using a propane torch or mapp gas. Mapp gas works better. You will need to gut the master cylinder of all the rubber seals because you will be getting it really hot. The bung you put in will need to be threaded to fit the banjo bolt. A double banjo system wont work. You need to tap into the rear remote resviour. You will be removing the rear resviour completely. I'm surprised the clip style tap from hoe hey doesnt fit. Most of the brembo and nissan resviour openings are the same. Did you buy one and it not fit? Or did they just say it wont fit? If you bought one and it doesnt fit then you might need to slightly sand it down. You can do this by finding a bolt that threads into the banjo bolt opening and clamp it in a drill press. Grab a little sandpaper and turn it till it fits(that is if you dont have a lathe). Send me an exact measurement of the plastic piece that cam out of the rear master cylinder. Part of my dual caliper was held together by the low temp aluminum brazing. This was way before there was a kit available for the DRZ 400 E swingarm. It was the inspiration for the 2 guys making them now.
Wow, lots of info and thanks for it.
I purchased another brembo rear master and test fit the actual hohey fitting. The opening for the brembo reservoir elbow is 12mm while the hohey is 15mm. See attached pic. not close enough to adapt. I don't have the tools.
I went ahead and ordered a cheap ebay master that looks like a nissen copy. If it has a 15mm reservoir port, I may just give that unit a try with the hohey.
Another thought is to bypass the rear master entirely, and get a coupler to join the line from the hydraulic left hand master and lever to the existing rear brake line to keep the ABS system intact. I would just couple both banjos together and bypass the existing rear master completely.
Brake Line Joiners
The low temp braze sound intriguing. I would be flowing material into the reservoir elbow opening and stop up the two holes inside? Just a layer of material?
In that case I guess I would use the existing banjo port to fit a double banjo, connecting the line from left hand lever/master and the existing rear brake line. Eliminating the rear master reservoir, correct?
Thanks for all the time and guidance on this.
Love your work on the dual caliper setup.