Miles Posted July 4, 2019 Share Posted July 4, 2019 (edited) What you have here is known as a Kluge: a collection of ill fitting parts forming a disgusting whole. Looks like the PO used hard lines that were too long. To get the lines to fit he took up the extra length by coiling the hard lines. The lines are not anchored correctly. Get rid of the yellow zip ties and do it right. Replace the hard lines with stock lines or make your own. If you are not up to making your own hard lines find a shop or web site that can make the lines at the correct length. Note: the fittings on Z cars are all 10 x 1.0mm double inverted flare. Edited July 4, 2019 by Miles Quote Link to comment Share on other sites More sharing options...
Twisted46 Posted July 4, 2019 Author Share Posted July 4, 2019 I've got a roll of 3/16 copper tube and a package of M10 flare nuts on the way. I really didn't think much about the hard lines because the brakes worked when I bought it. I am thinking that is a massive air trap though. The good news is that the line from the engine bay to the rear T is fine. Happy Birthday America, Enjoy your holiday all. Quote Link to comment Share on other sites More sharing options...
Twisted46 Posted July 10, 2019 Author Share Posted July 10, 2019 So I decided I needed a break from working on the brakes.. HAHA.. Anyway I took it to a shop and they tried for 3 hours and didn't make any progress, they took the MC out and bled it and then went to the corners in the right sequence. I wanted them to try before all the lines are yanked out and the car is down for a long time.. again... Quote Link to comment Share on other sites More sharing options...
grannyknot Posted July 10, 2019 Share Posted July 10, 2019 Do you access to a good flaring tool? If not consider something like this,https://www.eastwood.com/eastwood-pro-brake-tubing-flaring-tool-with-45-and-37-degree-die-set.html It's the best flaring tool I've ever used and if you don't think you'll ever use it again you can sell it on Craigs and get a big chunk of your money back. The one I bought has done complete brake lines on four Z's now and still shows no wear. 1 Quote Link to comment Share on other sites More sharing options...
Twisted46 Posted July 16, 2019 Author Share Posted July 16, 2019 A short update, I adjusted the push rod out a little bit and that help with the pedal feel slightly. I need to back it off a little bit as the as the rears would lock up after heavy use. I still do not have enough pedal feel and when I hook up vacuum the pedal goes to the floor instantly. This still seems like an air issue but again we cannot get any more air to bleed out. I was wondering if the safety switch under the master cylinder can cause issues when it gets older? also is there any chance a bad brake booster would cause this? I am only asking these questions because I plan to replace the lines this weekend and I really never want the best with the brakes again. so if I need to replace either of those now would be the best time. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted July 16, 2019 Share Posted July 16, 2019 Sounds like reaction disk issue. I saw you said you had checked it, but that's what I'm seeing looking at your post. 1 Quote Link to comment Share on other sites More sharing options...
Twisted46 Posted July 16, 2019 Author Share Posted July 16, 2019 I will check again, I plan to pull out the brake booster anyways to replace it because it keeps making this god-awful honking sound every time I press the brake pedal. I hate to waste another $100 but it's the last hope part of the system. Quote Link to comment Share on other sites More sharing options...
Twisted46 Posted July 17, 2019 Author Share Posted July 17, 2019 (edited) Well I don't see a reaction disk in there.... Edit: also based on the crustynes of the booster and the fact that i can get one from autozone for under $100 with tax and shipping I plan to just replace it. Edited July 17, 2019 by Twisted46 Additional thoughts 1 Quote Link to comment Share on other sites More sharing options...
JMortensen Posted July 18, 2019 Share Posted July 18, 2019 Sounds like you needed a booster anyway. Quote Link to comment Share on other sites More sharing options...
Twisted46 Posted July 19, 2019 Author Share Posted July 19, 2019 Victory!!!!! Brake booster replaced (45 minute job) and i can barely move the pedal with the car off!!!! I spent so much time and money chasing down a $.01 piece of rubber but I have better brakes for it. Thanks for coming along for the ride everyone! Quote Link to comment Share on other sites More sharing options...
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