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Hi everyone, Got a brake question. Since getting my 1973 240z on the road and running after an intensive tear down and rebuild, all has been good except for the brakes. For some reason, with even the slight amount of pressure, the brakes grab really hard. So when I drive I have to barely feather the pedal to brake normally. When I pull the vaccum line off of the booster, the opposite happens, the brakes take a LOT of effort to decelerate normally. So I am thinking the booster may be providing too much assistance. Wondering if you guys have ever experienced something like this in your builds? Brake system "brake-down" -240z Original booster (tested and working) -Aftermarket check valve installed in vacuum line (the correct direction) -Vacuum line connected to the crossover tube on the intake manifold (SU carbs). OEM has the vacuum connection on one of the runners. -1981 280zx master cylinder 15/16" -wilwood proportioning valve (for rear brakes) with built in splitter for front brakes L and R. -toyota 4-piston front calipers with vented Z31 rotors -maxima rear disc brake conversion -All new hard lines and brake hoses. Any feedback is welcome. I will be repairing a very minor leak in one of the inverted flare hard line connections soon and can use the opportunity to try to solve this issue. Thank you! -Aaron
Hey guys, Sorry about posting this in the FAQs first, didn't see what category I was in. I recently got the Zcardepot.com Rear disc brake conversion kit, the sport one with the drilled and slotted discs. It uses a maxima caliper. They didn't send me any install information, just a box of parts. I have searched around and haven't found anyone who has documented the install. I did my best to install it how it makes sense, but I want to make sure that it is correct before I bleed the system and drive the car. I've posted some pictures below of my install, sorry for the lighting. I usually do all my work with a headlamp on, so pictures are either too bright or too dark..... I posted a picture of the brake line included, as well as letters showing where they are located on the installed caliper. I used the factory bracket to hold the middle of the brake line fitting. I also used the caliper with the R for right side on the right side of the car. I literally couldn't even find info on how the pads are supposed to be installed. They seem to be left/right specific, as the pad touching the caliper piston has a large tab off the back of it that sticks out. Mostly I am wondering: 1. Is the caliper even in the right position? 2. Is the brake line routed correctly? 3. I read that to make the hand brake cables work, i should swap them across the car so they are short enough to use them on the front of the disc. That is my plan, but have yet to do it. Is it correct? 4.Is there anything I am missing documentation-wise? I can't even find a maxima caliper swap guide. The one I found has broken picture links, so it isn't much use. Thanks in advance!