Restoration of 67s - Upgrades? Single vs. dual brake circuit(s)

[mbruen]

While restoring my 67s, the question was raised if I should convert the single circuit brake system to a dual circuit brake system. Many of the components need replacement/rebuild so the cost is not the main issue.

Regarding authenticity vs. added safety, what are you thoughts on upgrading the brakes.

Note: my car is a numbers matching car and I am currently reassembling and restoring the parts of the car to install on the completed body resto.

Thanks,
Mark

[Jim Morris]

This is an inconspicuous upgrade. A peek inside the smuggler's box would tell, but otherwise one would have to do some "taking apart" to know the conversion was done. I have always done this to my 67 cars, and have never had a judge comment at concours. But then, I do drive my cars.

[mathieulecomte]

I would agree, it is also completely reversible since it is the Master cylinder, a few hard lines and the reservoir. I would do it.

[edmayo]

I did mine using a BMW reservoir which has the divider in it and fits in the smuggler's box as per original. The dual circuit M.Cyl. uses the original pressure switch for the brake lights.

[hutec]

I did also the BMW reservoir in smugglers box conversion on my 67 912

.
https://www.912bbs.org/forum/threads....55391/page-22
@Edmayo could you please share, how you attached the lines from reservoir to mc?

[Jim Morris]

Ditto to Ed Mayo on my conversions.

[moito]

it does not happen that often that a brake circuit fails but when it does it is no fun,especially in a single circuit car...ask me how i know.

[haul]

upgrading for a dual circuit is a nice and „easy“ feature...
worth the effort....
changed the fluid also to silicon...

[rs-vic]

What’s the part number for the BMW reservoir?

[haul]

reservoir at my 65 is from a SC carrera
mbc....ATE