Break master swap

scotty · Post by **scotty** » Fri Aug 26, 2005 3:39 pm

I wanted to replace the master with a double plunger on a 67 1600. I need to get a new one anyway and that little single makes me nervous. I know I need more clearance on the air cleaner and to change the lines, but will a later model master fit in there, are the lines going to be the same size and are there any cheaper swaps for the part?

Thanks

datsun65 · Post by **datsun65** » Fri Aug 26, 2005 4:36 pm

I think you may need to modify the cowl ledge in order for it to fit. If you look at the 67 and later cars, there is a notch which provides for extra room for the dual master.

http://community.webshots.com/photo/312 ... 5129MyVoni

Post by **ppeters914** » Fri Aug 26, 2005 6:22 pm

Here's how Michael modified Wild Bill's '67 roadster (beautiful job, Michael):

http://www.datsun510.com/photopost/show ... p?cat=3143

The brake master cylinder pocket modification pics are in reverse order starting w/ the last pic on page 1 of the album.

Definitely something to think about during a frame-off...

scotty · Post by **scotty** » Sat Aug 27, 2005 12:02 pm

I don't think I want to get that ambitious, but I could get some smaller air cleaners that would clear the longer master. Anyone ever done this and know what cleaner will clear? Thanks

67 1/2 1600 · Post by **67 1/2 1600** » Sat Aug 27, 2005 1:23 pm

I think with velocity stacks it will clear?? I think it might clear the air filter but I am not sure if it will hit the hood.

Joaquin

TR · Post by TR » Sat Aug 27, 2005 1:37 pm

I don't have first hand experience with it, but I am prett sure that is what others do - modify the air cleaners.

There is also some fun to be had modifying the plunger in addition to the brake lines.

Dean at Fairlady used to have conversions, I think.

The 240Z master is a price friendly alternative, you will have to open up the bolt spacing, firewall hole and switch to metric fittings at the master...But you have to mess with those anyways...

67 1/2 1600 · Post by **67 1/2 1600** » Sat Aug 27, 2005 1:40 pm

Or a 510 one. Make sure like TR said change to metrics. Also you need to change the piece where the pedal hooks up to the small bracket. The 510 one is longer and you need to put yours in there. Bracket that pushes the cylinder in and out and pins into the brake pedal

Joaquin