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Wussup guys Im having an issue with my brakes. Ive been searching but cannot seem to find what I am looking for. Sorry if its a little long.

 

I have a 1978 280z. Went to take it out for a little drive around the block just to get it running and making sure everything still works. When I pulled out of the driveway when a few feet and my brakes were almost non existent. The pedal became very hard to push and barely stopping the car even when going 10mph. So I decided after researching that the master cylinder is probably going bad and mostly the brake booster needs to be replaced (Seemed like still original parts)

 

So I ordered a new master cylinder and brake booster from Black Dragon. Disassembled all the old parts. Mostly took out the brake booster, and left the master cylinder for now since it is still full of liquid. 

 

Received my parts from black dragon this weekend. Here are my issues.

 

Black Dragon part numbers

 

#64-162-Z brake booster

#64-103 Master Cylinder

 

1. The old nuts that went on the old master to booster, 3 of them fit but the top one. The nut cant even be screwed in. It looks like they sent me a bad part. Threads on the stud looked stripped. And even at an angle. But all other 3 nuts screwed in.

 

2. The new master I received has only 2 stud holes when the old master had 4 is that normal? So I said what the hell I will try and make it work. Ill just use the two vertical studs. So I just test fitted the new parts together out of the car, the master cylinder had to be wiggled in since the stud wasnt straight, and now when it slid in, theres a gap between the master and the brake booster. I dont recall there being some sort of spacer on the old master. I even tried the new master with the old booster, slid in perfect but still a gap. 

 

3. New brake booster looks significantly larger than OEM, Measured the rectangular indentation that fits in the firewall on the new one and the old one. The new one is larger. Will it even fit in my car?

 

Just frustrated because I wanted to get this done over the weekend and even ordered SS lines from MSA. And wanted to get it back on the road. Please if anyone can help me. Thanks.

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 I just ordered the modern motorsport S30 rear caliper adapter to replace my drums with 240sx calipers. I have read through many threads and I am confused. Can I use S14 rear calipers and is the parking brake bracket I would need to make for the S13 calipers the same for the S14s?

Edited by juxsa

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They are the same M10 x 1.0 .

 

Note: do not use brake lines with banjo fittings on the Toyota caliper. The caliper is not designed for bango fittings. If used they will not seal and they will leak.

 

There are many options for brake lines for the Toyota swap discussed in the brake forum. Search.

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