[Roadsters] Volvo brakes - Master cylinder options

[Mark Sedlack]

Paul,
You most definitely need the higher volume of a 7/8" bore master to operate
4-piston Volvo brakes.  There's a couple of cylinders on Ebay right now
http://tinyurl.com/ypzawo  http://tinyurl.com/2hw6ps

For the push-rod, you can either swap out the retaining ring/disk/rod from
your existing cylinder and use shims for adjusting pedal height, or scrounge
up an adjustable rod/clevis from a Z-car brake or clutch cylinder.

Be aware that the roadster cylinder uses SAE threads at the flare fittings,
while the Z uses metric inverted flare fittings (not bubble).  This means
you have to cut off the exisiting flared-ends, replace the end fittings with
metric, then redo the double flares.

Mark Sedlack
ZROC
Cuyahoga Falls OH
66 1600 http://www.mildevco.net/chevypowereddatsuns/
77 280Z http://www.mildevco.net/chevypowereddatsuns/

----- Original Message ----- 
From: "Paul Souza" <pauljsouza at yahoo.com>
To: <datsun-roadsters at autox.team.net>
Sent: Sunday, September 02, 2007 12:55 PM
Subject: [Roadsters] Volvo brakes - Master cylinder options


> Hi Everyone,
>   I am disappointed in the performance of my Volvo brakes.  I am using the
stock master cylinder and now I am thinking the Volvo brakes are not getting
enough fluid to work properly. I am considering purchasing and installing a
7/8" master cylinder setup.
>
>   I noticed Dean has a custom setup http://www.datsunparts.com/1241
Tandem Brake Cylinder 7/8".  Has anyone installed this setup ?
>
>   My concern is the plunger rod that connects to the brake pedal.  I
believe I have to customize my old one to make this work.
>
>   Please share advice.
>
>   THANKS !
>
>   Paul Souza
>   69 2000
>   Vacaville, CA